Further evidence for low-energy protonium production in vacuum

Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latte...
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Autor*in:	Lodi Rizzini, E. [verfasserIn] Venturelli, L. Zurlo, N. Charlton, M. Amsler, C. Bonomi, G. Canali, C. Carraro, C. Fontana, A. Genova, P. Hayano, R. Jørgensen, L. V. Kellerbauer, A. Lagomarsino, V. Landua, R. Macrí, M. Manuzio, G. Montagna, P. Regenfus, C. Rotondi, A. Testera, G. Variola, A. van der Werf, D. P.

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2012

Schlagwörter:	Antihydrogen Trap Electrode Antiproton Annihilation Electrode Wall Annihilation Signal

Anmerkung:	© The Author(s) 2012

Übergeordnetes Werk:	Enthalten in: The European physical journal - Berlin : Springer, 2011, 127(2012), 10 vom: 10. Okt.
Übergeordnetes Werk:	volume:127 ; year:2012 ; number:10 ; day:10 ; month:10

Links:	Volltext

DOI / URN:	10.1140/epjp/i2012-12124-9

Katalog-ID:	SPR031449387

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245	1	0	\|a Further evidence for low-energy protonium production in vacuum
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520			\|a Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time.
650		4	\|a Antihydrogen \|7 (dpeaa)DE-He213
650		4	\|a Trap Electrode \|7 (dpeaa)DE-He213
650		4	\|a Antiproton Annihilation \|7 (dpeaa)DE-He213
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650		4	\|a Annihilation Signal \|7 (dpeaa)DE-He213
700	1		\|a Venturelli, L. \|4 aut
700	1		\|a Zurlo, N. \|4 aut
700	1		\|a Charlton, M. \|4 aut
700	1		\|a Amsler, C. \|4 aut
700	1		\|a Bonomi, G. \|4 aut
700	1		\|a Canali, C. \|4 aut
700	1		\|a Carraro, C. \|4 aut
700	1		\|a Fontana, A. \|4 aut
700	1		\|a Genova, P. \|4 aut
700	1		\|a Hayano, R. \|4 aut
700	1		\|a Jørgensen, L. V. \|4 aut
700	1		\|a Kellerbauer, A. \|4 aut
700	1		\|a Lagomarsino, V. \|4 aut
700	1		\|a Landua, R. \|4 aut
700	1		\|a Macrí, M. \|4 aut
700	1		\|a Manuzio, G. \|4 aut
700	1		\|a Montagna, P. \|4 aut
700	1		\|a Regenfus, C. \|4 aut
700	1		\|a Rotondi, A. \|4 aut
700	1		\|a Testera, G. \|4 aut
700	1		\|a Variola, A. \|4 aut
700	1		\|a van der Werf, D. P. \|4 aut
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hierarchy_sort_str	2012
publishDate	2012
allfields	10.1140/epjp/i2012-12124-9 doi (DE-627)SPR031449387 (SPR)i2012-12124-9-e DE-627 ger DE-627 rakwb eng Lodi Rizzini, E. verfasserin aut Further evidence for low-energy protonium production in vacuum 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2012 Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. Antihydrogen (dpeaa)DE-He213 Trap Electrode (dpeaa)DE-He213 Antiproton Annihilation (dpeaa)DE-He213 Electrode Wall (dpeaa)DE-He213 Annihilation Signal (dpeaa)DE-He213 Venturelli, L. aut Zurlo, N. aut Charlton, M. aut Amsler, C. aut Bonomi, G. aut Canali, C. aut Carraro, C. aut Fontana, A. aut Genova, P. aut Hayano, R. aut Jørgensen, L. V. aut Kellerbauer, A. aut Lagomarsino, V. aut Landua, R. aut Macrí, M. aut Manuzio, G. aut Montagna, P. aut Regenfus, C. aut Rotondi, A. aut Testera, G. aut Variola, A. aut van der Werf, D. P. aut Enthalten in The European physical journal Berlin : Springer, 2011 127(2012), 10 vom: 10. Okt. (DE-627)647653958 (DE-600)2595693-0 2190-5444 nnns volume:127 year:2012 number:10 day:10 month:10 https://dx.doi.org/10.1140/epjp/i2012-12124-9 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 127 2012 10 10 10
spelling	10.1140/epjp/i2012-12124-9 doi (DE-627)SPR031449387 (SPR)i2012-12124-9-e DE-627 ger DE-627 rakwb eng Lodi Rizzini, E. verfasserin aut Further evidence for low-energy protonium production in vacuum 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2012 Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. Antihydrogen (dpeaa)DE-He213 Trap Electrode (dpeaa)DE-He213 Antiproton Annihilation (dpeaa)DE-He213 Electrode Wall (dpeaa)DE-He213 Annihilation Signal (dpeaa)DE-He213 Venturelli, L. aut Zurlo, N. aut Charlton, M. aut Amsler, C. aut Bonomi, G. aut Canali, C. aut Carraro, C. aut Fontana, A. aut Genova, P. aut Hayano, R. aut Jørgensen, L. V. aut Kellerbauer, A. aut Lagomarsino, V. aut Landua, R. aut Macrí, M. aut Manuzio, G. aut Montagna, P. aut Regenfus, C. aut Rotondi, A. aut Testera, G. aut Variola, A. aut van der Werf, D. P. aut Enthalten in The European physical journal Berlin : Springer, 2011 127(2012), 10 vom: 10. Okt. (DE-627)647653958 (DE-600)2595693-0 2190-5444 nnns volume:127 year:2012 number:10 day:10 month:10 https://dx.doi.org/10.1140/epjp/i2012-12124-9 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 127 2012 10 10 10
allfields_unstemmed	10.1140/epjp/i2012-12124-9 doi (DE-627)SPR031449387 (SPR)i2012-12124-9-e DE-627 ger DE-627 rakwb eng Lodi Rizzini, E. verfasserin aut Further evidence for low-energy protonium production in vacuum 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2012 Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. Antihydrogen (dpeaa)DE-He213 Trap Electrode (dpeaa)DE-He213 Antiproton Annihilation (dpeaa)DE-He213 Electrode Wall (dpeaa)DE-He213 Annihilation Signal (dpeaa)DE-He213 Venturelli, L. aut Zurlo, N. aut Charlton, M. aut Amsler, C. aut Bonomi, G. aut Canali, C. aut Carraro, C. aut Fontana, A. aut Genova, P. aut Hayano, R. aut Jørgensen, L. V. aut Kellerbauer, A. aut Lagomarsino, V. aut Landua, R. aut Macrí, M. aut Manuzio, G. aut Montagna, P. aut Regenfus, C. aut Rotondi, A. aut Testera, G. aut Variola, A. aut van der Werf, D. P. aut Enthalten in The European physical journal Berlin : Springer, 2011 127(2012), 10 vom: 10. Okt. (DE-627)647653958 (DE-600)2595693-0 2190-5444 nnns volume:127 year:2012 number:10 day:10 month:10 https://dx.doi.org/10.1140/epjp/i2012-12124-9 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 127 2012 10 10 10
allfieldsGer	10.1140/epjp/i2012-12124-9 doi (DE-627)SPR031449387 (SPR)i2012-12124-9-e DE-627 ger DE-627 rakwb eng Lodi Rizzini, E. verfasserin aut Further evidence for low-energy protonium production in vacuum 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2012 Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. Antihydrogen (dpeaa)DE-He213 Trap Electrode (dpeaa)DE-He213 Antiproton Annihilation (dpeaa)DE-He213 Electrode Wall (dpeaa)DE-He213 Annihilation Signal (dpeaa)DE-He213 Venturelli, L. aut Zurlo, N. aut Charlton, M. aut Amsler, C. aut Bonomi, G. aut Canali, C. aut Carraro, C. aut Fontana, A. aut Genova, P. aut Hayano, R. aut Jørgensen, L. V. aut Kellerbauer, A. aut Lagomarsino, V. aut Landua, R. aut Macrí, M. aut Manuzio, G. aut Montagna, P. aut Regenfus, C. aut Rotondi, A. aut Testera, G. aut Variola, A. aut van der Werf, D. P. aut Enthalten in The European physical journal Berlin : Springer, 2011 127(2012), 10 vom: 10. Okt. (DE-627)647653958 (DE-600)2595693-0 2190-5444 nnns volume:127 year:2012 number:10 day:10 month:10 https://dx.doi.org/10.1140/epjp/i2012-12124-9 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 127 2012 10 10 10
allfieldsSound	10.1140/epjp/i2012-12124-9 doi (DE-627)SPR031449387 (SPR)i2012-12124-9-e DE-627 ger DE-627 rakwb eng Lodi Rizzini, E. verfasserin aut Further evidence for low-energy protonium production in vacuum 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2012 Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. Antihydrogen (dpeaa)DE-He213 Trap Electrode (dpeaa)DE-He213 Antiproton Annihilation (dpeaa)DE-He213 Electrode Wall (dpeaa)DE-He213 Annihilation Signal (dpeaa)DE-He213 Venturelli, L. aut Zurlo, N. aut Charlton, M. aut Amsler, C. aut Bonomi, G. aut Canali, C. aut Carraro, C. aut Fontana, A. aut Genova, P. aut Hayano, R. aut Jørgensen, L. V. aut Kellerbauer, A. aut Lagomarsino, V. aut Landua, R. aut Macrí, M. aut Manuzio, G. aut Montagna, P. aut Regenfus, C. aut Rotondi, A. aut Testera, G. aut Variola, A. aut van der Werf, D. P. aut Enthalten in The European physical journal Berlin : Springer, 2011 127(2012), 10 vom: 10. Okt. (DE-627)647653958 (DE-600)2595693-0 2190-5444 nnns volume:127 year:2012 number:10 day:10 month:10 https://dx.doi.org/10.1140/epjp/i2012-12124-9 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 127 2012 10 10 10
language	English
source	Enthalten in The European physical journal 127(2012), 10 vom: 10. Okt. volume:127 year:2012 number:10 day:10 month:10
sourceStr	Enthalten in The European physical journal 127(2012), 10 vom: 10. Okt. volume:127 year:2012 number:10 day:10 month:10
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Antihydrogen Trap Electrode Antiproton Annihilation Electrode Wall Annihilation Signal
isfreeaccess_bool	true
container_title	The European physical journal
authorswithroles_txt_mv	Lodi Rizzini, E. @@aut@@ Venturelli, L. @@aut@@ Zurlo, N. @@aut@@ Charlton, M. @@aut@@ Amsler, C. @@aut@@ Bonomi, G. @@aut@@ Canali, C. @@aut@@ Carraro, C. @@aut@@ Fontana, A. @@aut@@ Genova, P. @@aut@@ Hayano, R. @@aut@@ Jørgensen, L. V. @@aut@@ Kellerbauer, A. @@aut@@ Lagomarsino, V. @@aut@@ Landua, R. @@aut@@ Macrí, M. @@aut@@ Manuzio, G. @@aut@@ Montagna, P. @@aut@@ Regenfus, C. @@aut@@ Rotondi, A. @@aut@@ Testera, G. @@aut@@ Variola, A. @@aut@@ van der Werf, D. P. @@aut@@
publishDateDaySort_date	2012-10-10T00:00:00Z
hierarchy_top_id	647653958
id	SPR031449387
language_de	englisch
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author	Lodi Rizzini, E.
spellingShingle	Lodi Rizzini, E. misc Antihydrogen misc Trap Electrode misc Antiproton Annihilation misc Electrode Wall misc Annihilation Signal Further evidence for low-energy protonium production in vacuum
authorStr	Lodi Rizzini, E.
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topic_title	Further evidence for low-energy protonium production in vacuum Antihydrogen (dpeaa)DE-He213 Trap Electrode (dpeaa)DE-He213 Antiproton Annihilation (dpeaa)DE-He213 Electrode Wall (dpeaa)DE-He213 Annihilation Signal (dpeaa)DE-He213
topic	misc Antihydrogen misc Trap Electrode misc Antiproton Annihilation misc Electrode Wall misc Annihilation Signal
topic_unstemmed	misc Antihydrogen misc Trap Electrode misc Antiproton Annihilation misc Electrode Wall misc Annihilation Signal
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title	Further evidence for low-energy protonium production in vacuum
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title_full	Further evidence for low-energy protonium production in vacuum
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author_browse	Lodi Rizzini, E. Venturelli, L. Zurlo, N. Charlton, M. Amsler, C. Bonomi, G. Canali, C. Carraro, C. Fontana, A. Genova, P. Hayano, R. Jørgensen, L. V. Kellerbauer, A. Lagomarsino, V. Landua, R. Macrí, M. Manuzio, G. Montagna, P. Regenfus, C. Rotondi, A. Testera, G. Variola, A. van der Werf, D. P.
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doi_str_mv	10.1140/epjp/i2012-12124-9
title_sort	further evidence for low-energy protonium production in vacuum
title_auth	Further evidence for low-energy protonium production in vacuum
abstract	Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. © The Author(s) 2012
abstractGer	Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. © The Author(s) 2012
abstract_unstemmed	Abstract We describe an experiment performed in the ATHENA apparatus in which there is evidence that the antiproton-proton bound state, protonium, has been produced at very low energies in vacuum following the interaction of cold antiprotons with a trapped cloud of molecular hydrogen ions. The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. The effect on the annihilation signals of the passage of an electron current through a pre-loaded positron plasma has been studied in detail, and the results are presented here for the first time. © The Author(s) 2012
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title_short	Further evidence for low-energy protonium production in vacuum
url	https://dx.doi.org/10.1140/epjp/i2012-12124-9
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author2	Venturelli, L. Zurlo, N. Charlton, M. Amsler, C. Bonomi, G. Canali, C. Carraro, C. Fontana, A. Genova, P. Hayano, R. Jørgensen, L. V. Kellerbauer, A. Lagomarsino, V. Landua, R. Macrí, M. Manuzio, G. Montagna, P. Regenfus, C. Rotondi, A. Testera, G. Variola, A. van der Werf, D. P.
author2Str	Venturelli, L. Zurlo, N. Charlton, M. Amsler, C. Bonomi, G. Canali, C. Carraro, C. Fontana, A. Genova, P. Hayano, R. Jørgensen, L. V. Kellerbauer, A. Lagomarsino, V. Landua, R. Macrí, M. Manuzio, G. Montagna, P. Regenfus, C. Rotondi, A. Testera, G. Variola, A. van der Werf, D. P.
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doi_str	10.1140/epjp/i2012-12124-9
up_date	2024-07-03T23:46:40.361Z
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The latter were confined in a centrifugally separated belt outside a positron plasma used for antihydrogen formation. Studies have been performed at low positron plasma temperatures in which the protonium annihilation signal has been identified along with that from antihydrogen, and we discuss how their contributions can be disentangled. With the positron plasma heated to around 10000 K the ions become distributed in the positrons, and the majority of the annihilation signal can be explained in terms of protonium formation, as antihydrogen creation is heavily suppressed. In this case we compare the observed protonium formation rate with expectations from theory and find reasonable accord, when experimental systematics are taken into account. 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Further evidence for low-energy protonium production in vacuum

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