Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf

Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted a...
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Autor*in:	Dracoulis, G D [verfasserIn] Hota, S S Bernstein, L A Back, B B Esker, N E Rogers, A M Wiens, A Baartman, B David, H M Gates, J M Carpenter, M P Konki, J Stolze, S Seweryniak, D Cromaz, M Khoo, T L Macchiavelli, A O Chiara, C J Gothe, O R Hauschild, K Nair, C Doherty, D T Albers, M Lauritsen, T Clark, R M Campbell, C M Ruotsalainen, P Kondev, F G Rissanen, J Alcorta, M Qiu, Y Zhu, S Chen, J Fallon, P Greenlees, P T Savard, G Ahmad, I Hartley, D J Janssens, R V F Mudder, P R Greene, J P Bertone, P F Hoffman, C R Kwarsick, J T Gregorich, K E

Format:	Artikel
Sprache:	Englisch

Erschienen:	2015

Systematik:	UA 1000

Übergeordnetes Werk:	Enthalten in: Physical review letters - Ridge, NY : American Physical Society, 1958, 115(2015), 13
Übergeordnetes Werk:	volume:115 ; year:2015 ; number:13

Links:	Link aufrufen

Katalog-ID:	OLC196929597X

Internformat


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520			\|a Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state.
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700	1		\|a Wiens, A \|4 oth
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700	1		\|a David, H M \|4 oth
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700	1		\|a Albers, M \|4 oth
700	1		\|a Lauritsen, T \|4 oth
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700	1		\|a Ruotsalainen, P \|4 oth
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700	1		\|a Zhu, S \|4 oth
700	1		\|a Chen, J \|4 oth
700	1		\|a Fallon, P \|4 oth
700	1		\|a Greenlees, P T \|4 oth
700	1		\|a Savard, G \|4 oth
700	1		\|a Ahmad, I \|4 oth
700	1		\|a Hartley, D J \|4 oth
700	1		\|a Janssens, R V F \|4 oth
700	1		\|a Mudder, P R \|4 oth
700	1		\|a Greene, J P \|4 oth
700	1		\|a Bertone, P F \|4 oth
700	1		\|a Hoffman, C R \|4 oth
700	1		\|a Kwarsick, J T \|4 oth
700	1		\|a Gregorich, K E \|4 oth
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Indexfelder

author_variant	g d d gd gdd
matchkey_str	article:00319007:2015----::eaadisohnrnefwadoruspril
hierarchy_sort_str	2015
publishDate	2015
allfields	PQ20160211 (DE-627)OLC196929597X (DE-599)GBVOLC196929597X (PRQ)p594-a4a6734ca32dfd794d6180ac3f0946cb0dafaccc599e1661238b476307d43260 (KEY)0009201020150000115001300000decayandfissionhindranceoftwoandfourquasiparticlek DE-627 ger DE-627 rakwb eng 550 DNB UA 1000 AVZ rvk Dracoulis, G D verfasserin aut Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state. Hota, S S oth Bernstein, L A oth Back, B B oth Esker, N E oth Rogers, A M oth Wiens, A oth Baartman, B oth David, H M oth Gates, J M oth Carpenter, M P oth Konki, J oth Stolze, S oth Seweryniak, D oth Cromaz, M oth Khoo, T L oth Macchiavelli, A O oth Chiara, C J oth Gothe, O R oth Hauschild, K oth Nair, C oth Doherty, D T oth Albers, M oth Lauritsen, T oth Clark, R M oth Campbell, C M oth Ruotsalainen, P oth Kondev, F G oth Rissanen, J oth Alcorta, M oth Qiu, Y oth Zhu, S oth Chen, J oth Fallon, P oth Greenlees, P T oth Savard, G oth Ahmad, I oth Hartley, D J oth Janssens, R V F oth Mudder, P R oth Greene, J P oth Bertone, P F oth Hoffman, C R oth Kwarsick, J T oth Gregorich, K E oth Enthalten in Physical review letters Ridge, NY : American Physical Society, 1958 115(2015), 13 (DE-627)129503959 (DE-600)208853-8 (DE-576)014907267 0031-9007 nnns volume:115 year:2015 number:13 http://www.ncbi.nlm.nih.gov/pubmed/26451549 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_55 GBV_ILN_59 GBV_ILN_60 GBV_ILN_70 GBV_ILN_130 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_2095 GBV_ILN_2192 GBV_ILN_2279 GBV_ILN_2286 UA 1000 AR 115 2015 13
spelling	PQ20160211 (DE-627)OLC196929597X (DE-599)GBVOLC196929597X (PRQ)p594-a4a6734ca32dfd794d6180ac3f0946cb0dafaccc599e1661238b476307d43260 (KEY)0009201020150000115001300000decayandfissionhindranceoftwoandfourquasiparticlek DE-627 ger DE-627 rakwb eng 550 DNB UA 1000 AVZ rvk Dracoulis, G D verfasserin aut Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state. Hota, S S oth Bernstein, L A oth Back, B B oth Esker, N E oth Rogers, A M oth Wiens, A oth Baartman, B oth David, H M oth Gates, J M oth Carpenter, M P oth Konki, J oth Stolze, S oth Seweryniak, D oth Cromaz, M oth Khoo, T L oth Macchiavelli, A O oth Chiara, C J oth Gothe, O R oth Hauschild, K oth Nair, C oth Doherty, D T oth Albers, M oth Lauritsen, T oth Clark, R M oth Campbell, C M oth Ruotsalainen, P oth Kondev, F G oth Rissanen, J oth Alcorta, M oth Qiu, Y oth Zhu, S oth Chen, J oth Fallon, P oth Greenlees, P T oth Savard, G oth Ahmad, I oth Hartley, D J oth Janssens, R V F oth Mudder, P R oth Greene, J P oth Bertone, P F oth Hoffman, C R oth Kwarsick, J T oth Gregorich, K E oth Enthalten in Physical review letters Ridge, NY : American Physical Society, 1958 115(2015), 13 (DE-627)129503959 (DE-600)208853-8 (DE-576)014907267 0031-9007 nnns volume:115 year:2015 number:13 http://www.ncbi.nlm.nih.gov/pubmed/26451549 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_55 GBV_ILN_59 GBV_ILN_60 GBV_ILN_70 GBV_ILN_130 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_2095 GBV_ILN_2192 GBV_ILN_2279 GBV_ILN_2286 UA 1000 AR 115 2015 13
allfields_unstemmed	PQ20160211 (DE-627)OLC196929597X (DE-599)GBVOLC196929597X (PRQ)p594-a4a6734ca32dfd794d6180ac3f0946cb0dafaccc599e1661238b476307d43260 (KEY)0009201020150000115001300000decayandfissionhindranceoftwoandfourquasiparticlek DE-627 ger DE-627 rakwb eng 550 DNB UA 1000 AVZ rvk Dracoulis, G D verfasserin aut Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state. Hota, S S oth Bernstein, L A oth Back, B B oth Esker, N E oth Rogers, A M oth Wiens, A oth Baartman, B oth David, H M oth Gates, J M oth Carpenter, M P oth Konki, J oth Stolze, S oth Seweryniak, D oth Cromaz, M oth Khoo, T L oth Macchiavelli, A O oth Chiara, C J oth Gothe, O R oth Hauschild, K oth Nair, C oth Doherty, D T oth Albers, M oth Lauritsen, T oth Clark, R M oth Campbell, C M oth Ruotsalainen, P oth Kondev, F G oth Rissanen, J oth Alcorta, M oth Qiu, Y oth Zhu, S oth Chen, J oth Fallon, P oth Greenlees, P T oth Savard, G oth Ahmad, I oth Hartley, D J oth Janssens, R V F oth Mudder, P R oth Greene, J P oth Bertone, P F oth Hoffman, C R oth Kwarsick, J T oth Gregorich, K E oth Enthalten in Physical review letters Ridge, NY : American Physical Society, 1958 115(2015), 13 (DE-627)129503959 (DE-600)208853-8 (DE-576)014907267 0031-9007 nnns volume:115 year:2015 number:13 http://www.ncbi.nlm.nih.gov/pubmed/26451549 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_55 GBV_ILN_59 GBV_ILN_60 GBV_ILN_70 GBV_ILN_130 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_2095 GBV_ILN_2192 GBV_ILN_2279 GBV_ILN_2286 UA 1000 AR 115 2015 13
allfieldsGer	PQ20160211 (DE-627)OLC196929597X (DE-599)GBVOLC196929597X (PRQ)p594-a4a6734ca32dfd794d6180ac3f0946cb0dafaccc599e1661238b476307d43260 (KEY)0009201020150000115001300000decayandfissionhindranceoftwoandfourquasiparticlek DE-627 ger DE-627 rakwb eng 550 DNB UA 1000 AVZ rvk Dracoulis, G D verfasserin aut Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state. Hota, S S oth Bernstein, L A oth Back, B B oth Esker, N E oth Rogers, A M oth Wiens, A oth Baartman, B oth David, H M oth Gates, J M oth Carpenter, M P oth Konki, J oth Stolze, S oth Seweryniak, D oth Cromaz, M oth Khoo, T L oth Macchiavelli, A O oth Chiara, C J oth Gothe, O R oth Hauschild, K oth Nair, C oth Doherty, D T oth Albers, M oth Lauritsen, T oth Clark, R M oth Campbell, C M oth Ruotsalainen, P oth Kondev, F G oth Rissanen, J oth Alcorta, M oth Qiu, Y oth Zhu, S oth Chen, J oth Fallon, P oth Greenlees, P T oth Savard, G oth Ahmad, I oth Hartley, D J oth Janssens, R V F oth Mudder, P R oth Greene, J P oth Bertone, P F oth Hoffman, C R oth Kwarsick, J T oth Gregorich, K E oth Enthalten in Physical review letters Ridge, NY : American Physical Society, 1958 115(2015), 13 (DE-627)129503959 (DE-600)208853-8 (DE-576)014907267 0031-9007 nnns volume:115 year:2015 number:13 http://www.ncbi.nlm.nih.gov/pubmed/26451549 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_55 GBV_ILN_59 GBV_ILN_60 GBV_ILN_70 GBV_ILN_130 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_2095 GBV_ILN_2192 GBV_ILN_2279 GBV_ILN_2286 UA 1000 AR 115 2015 13
allfieldsSound	PQ20160211 (DE-627)OLC196929597X (DE-599)GBVOLC196929597X (PRQ)p594-a4a6734ca32dfd794d6180ac3f0946cb0dafaccc599e1661238b476307d43260 (KEY)0009201020150000115001300000decayandfissionhindranceoftwoandfourquasiparticlek DE-627 ger DE-627 rakwb eng 550 DNB UA 1000 AVZ rvk Dracoulis, G D verfasserin aut Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state. Hota, S S oth Bernstein, L A oth Back, B B oth Esker, N E oth Rogers, A M oth Wiens, A oth Baartman, B oth David, H M oth Gates, J M oth Carpenter, M P oth Konki, J oth Stolze, S oth Seweryniak, D oth Cromaz, M oth Khoo, T L oth Macchiavelli, A O oth Chiara, C J oth Gothe, O R oth Hauschild, K oth Nair, C oth Doherty, D T oth Albers, M oth Lauritsen, T oth Clark, R M oth Campbell, C M oth Ruotsalainen, P oth Kondev, F G oth Rissanen, J oth Alcorta, M oth Qiu, Y oth Zhu, S oth Chen, J oth Fallon, P oth Greenlees, P T oth Savard, G oth Ahmad, I oth Hartley, D J oth Janssens, R V F oth Mudder, P R oth Greene, J P oth Bertone, P F oth Hoffman, C R oth Kwarsick, J T oth Gregorich, K E oth Enthalten in Physical review letters Ridge, NY : American Physical Society, 1958 115(2015), 13 (DE-627)129503959 (DE-600)208853-8 (DE-576)014907267 0031-9007 nnns volume:115 year:2015 number:13 http://www.ncbi.nlm.nih.gov/pubmed/26451549 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_55 GBV_ILN_59 GBV_ILN_60 GBV_ILN_70 GBV_ILN_130 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_2095 GBV_ILN_2192 GBV_ILN_2279 GBV_ILN_2286 UA 1000 AR 115 2015 13
language	English
source	Enthalten in Physical review letters 115(2015), 13 volume:115 year:2015 number:13
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authorswithroles_txt_mv	Dracoulis, G D @@aut@@ Hota, S S @@oth@@ Bernstein, L A @@oth@@ Back, B B @@oth@@ Esker, N E @@oth@@ Rogers, A M @@oth@@ Wiens, A @@oth@@ Baartman, B @@oth@@ David, H M @@oth@@ Gates, J M @@oth@@ Carpenter, M P @@oth@@ Konki, J @@oth@@ Stolze, S @@oth@@ Seweryniak, D @@oth@@ Cromaz, M @@oth@@ Khoo, T L @@oth@@ Macchiavelli, A O @@oth@@ Chiara, C J @@oth@@ Gothe, O R @@oth@@ Hauschild, K @@oth@@ Nair, C @@oth@@ Doherty, D T @@oth@@ Albers, M @@oth@@ Lauritsen, T @@oth@@ Clark, R M @@oth@@ Campbell, C M @@oth@@ Ruotsalainen, P @@oth@@ Kondev, F G @@oth@@ Rissanen, J @@oth@@ Alcorta, M @@oth@@ Qiu, Y @@oth@@ Zhu, S @@oth@@ Chen, J @@oth@@ Fallon, P @@oth@@ Greenlees, P T @@oth@@ Savard, G @@oth@@ Ahmad, I @@oth@@ Hartley, D J @@oth@@ Janssens, R V F @@oth@@ Mudder, P R @@oth@@ Greene, J P @@oth@@ Bertone, P F @@oth@@ Hoffman, C R @@oth@@ Kwarsick, J T @@oth@@ Gregorich, K E @@oth@@
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author	Dracoulis, G D
spellingShingle	Dracoulis, G D ddc 550 rvk UA 1000 Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf
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topic_title	550 DNB UA 1000 AVZ rvk Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf
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title	Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf
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title_full	Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf
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journal	Physical review letters
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author-letter	Dracoulis, G D
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title_sort	decay and fission hindrance of two- and four-quasiparticle k isomers in ^{254}rf
title_auth	Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf
abstract	Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state.
abstractGer	Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state.
abstract_unstemmed	Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state.
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container_issue	13
title_short	Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf
url	http://www.ncbi.nlm.nih.gov/pubmed/26451549
remote_bool	false
author2	Hota, S S Bernstein, L A Back, B B Esker, N E Rogers, A M Wiens, A Baartman, B David, H M Gates, J M Carpenter, M P Konki, J Stolze, S Seweryniak, D Cromaz, M Khoo, T L Macchiavelli, A O Chiara, C J Gothe, O R Hauschild, K Nair, C Doherty, D T Albers, M Lauritsen, T Clark, R M Campbell, C M Ruotsalainen, P Kondev, F G Rissanen, J Alcorta, M Qiu, Y Zhu, S Chen, J Fallon, P Greenlees, P T Savard, G Ahmad, I Hartley, D J Janssens, R V F Mudder, P R Greene, J P Bertone, P F Hoffman, C R Kwarsick, J T Gregorich, K E
author2Str	Hota, S S Bernstein, L A Back, B B Esker, N E Rogers, A M Wiens, A Baartman, B David, H M Gates, J M Carpenter, M P Konki, J Stolze, S Seweryniak, D Cromaz, M Khoo, T L Macchiavelli, A O Chiara, C J Gothe, O R Hauschild, K Nair, C Doherty, D T Albers, M Lauritsen, T Clark, R M Campbell, C M Ruotsalainen, P Kondev, F G Rissanen, J Alcorta, M Qiu, Y Zhu, S Chen, J Fallon, P Greenlees, P T Savard, G Ahmad, I Hartley, D J Janssens, R V F Mudder, P R Greene, J P Bertone, P F Hoffman, C R Kwarsick, J T Gregorich, K E
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up_date	2024-07-04T05:09:44.830Z
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Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf

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