Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV
Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160...
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E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1991 |
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Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
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in: Nuclear Physics, Section A - Amsterdam : Elsevier, 524(1991), 2, Seite 251-284 |
| Übergeordnetes Werk: |
volume:524 ; year:1991 ; number:2 ; pages:251-284 |
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| 245 | 1 | 0 | |a Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV |
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| 520 | |a Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. | ||
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(DE-627)NLEJ181317214 (DE-599)GBVNLZ181317214 DE-627 ger DE-627 rakwb eng Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Hogenbirk, A. oth Blok, H.P. oth Harakeh, M.N. oth in Nuclear Physics, Section A Amsterdam : Elsevier 524(1991), 2, Seite 251-284 (DE-627)NLEJ177217928 (DE-600)1466542-6 0375-9474 nnns volume:524 year:1991 number:2 pages:251-284 http://linkinghub.elsevier.com/retrieve/pii/0375-9474(91)90026-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 524 1991 2 251-284 |
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(DE-627)NLEJ181317214 (DE-599)GBVNLZ181317214 DE-627 ger DE-627 rakwb eng Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Hogenbirk, A. oth Blok, H.P. oth Harakeh, M.N. oth in Nuclear Physics, Section A Amsterdam : Elsevier 524(1991), 2, Seite 251-284 (DE-627)NLEJ177217928 (DE-600)1466542-6 0375-9474 nnns volume:524 year:1991 number:2 pages:251-284 http://linkinghub.elsevier.com/retrieve/pii/0375-9474(91)90026-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 524 1991 2 251-284 |
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(DE-627)NLEJ181317214 (DE-599)GBVNLZ181317214 DE-627 ger DE-627 rakwb eng Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Hogenbirk, A. oth Blok, H.P. oth Harakeh, M.N. oth in Nuclear Physics, Section A Amsterdam : Elsevier 524(1991), 2, Seite 251-284 (DE-627)NLEJ177217928 (DE-600)1466542-6 0375-9474 nnns volume:524 year:1991 number:2 pages:251-284 http://linkinghub.elsevier.com/retrieve/pii/0375-9474(91)90026-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 524 1991 2 251-284 |
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(DE-627)NLEJ181317214 (DE-599)GBVNLZ181317214 DE-627 ger DE-627 rakwb eng Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Hogenbirk, A. oth Blok, H.P. oth Harakeh, M.N. oth in Nuclear Physics, Section A Amsterdam : Elsevier 524(1991), 2, Seite 251-284 (DE-627)NLEJ177217928 (DE-600)1466542-6 0375-9474 nnns volume:524 year:1991 number:2 pages:251-284 http://linkinghub.elsevier.com/retrieve/pii/0375-9474(91)90026-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 524 1991 2 251-284 |
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(DE-627)NLEJ181317214 (DE-599)GBVNLZ181317214 DE-627 ger DE-627 rakwb eng Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Hogenbirk, A. oth Blok, H.P. oth Harakeh, M.N. oth in Nuclear Physics, Section A Amsterdam : Elsevier 524(1991), 2, Seite 251-284 (DE-627)NLEJ177217928 (DE-600)1466542-6 0375-9474 nnns volume:524 year:1991 number:2 pages:251-284 http://linkinghub.elsevier.com/retrieve/pii/0375-9474(91)90026-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 524 1991 2 251-284 |
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Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV |
| abstract |
Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. |
| abstractGer |
Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. |
| abstract_unstemmed |
Results are presented of a high-resolution inelastic proton scattering experiment on the even Hg isotopes ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg performed at E"p=28MeV. Highly enriched targets were used. A special target preparation technique has been developed in order to prepare thin (~160 μg/cm^2) homogeneous targets, which resulted in a high (~17 keV) energy resolution. Several previously unknown levels were observed. Angular distributions for levels up to between 2.6 and 4.4 MeV (depending on the isotope) have been obtained. The study of these four isotopes made it possible to compare analogous levels in these isotopes. A macroscopic CC analysis, using a symmetric rotational model, was performed for the ground, 2^+"1 and 4^+"1 states, which were assumed to be members of a ground-state band. For the 2^+"2 states a phenomenological CC analysis was performed, yielding B"p(E2)-values that are about a factor of two larger than the electromagnetic B(E2)-values. This is assumed to be due to a large neutron contribution to the excitation of these states. For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. It is not clear, however, within which nuclear model this shape transition should be described. |
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| title_short |
Inelastic proton scattering from ^1^9^8Hg, ^2^0^0Hg, ^2^0^2Hg and ^2^0^4Hg at E"r"m"p=28MeV |
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| author2 |
Hogenbirk, A. Blok, H.P. Harakeh, M.N. |
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Hogenbirk, A. Blok, H.P. Harakeh, M.N. |
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2024-07-06T06:15:20.035Z |
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For the analysis of the remaining levels a quasi-DWBA scheme was used, in which the coupling of the 2^+"1 state with the ground state was included, but no further couplings were taken into account. This allowed making J^π assignments for some levels. In ^2^0^0Hg a low-lying 4^+ state is observed, which was previously incorrectly given a 3^+ assignment, while also in ^1^9^8Hg and ^2^0^2Hg low-lying 4^+"2 states are observed. The summed excitation strength of the 4^+"1 and 4^+"2 states appears to be approximately constant in the studied isotopes. From our analysis of the 4^+ states there is, in agreement with results from other experiments, evidence that a shape transition may occur between ^2^0^0Hg and ^2^0^2Hg. 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