Observation of a core-excited E4 isomer in 98Cd

A. Blazhev; M. Gorska; H. Grawe; J. Nyberg; M. Palacz; E. Caurier; O. Dorvaux; A. Gadea; F. Nowacki; C. Andreoiu; G. de Angelis; D. Balabanski; Ch. Beck; B. Cederwall; D. Curien; J. Doring; J. Ekman; C. Fahlander; K. Lagergren; J. Ljungvall; M. Moszynski; L.O. Norlin; C. Plettner; D. Rudolph; D. Sohler; K.M. Spohr; O. Thelen; M. Weiszflog; M. Wisell; M. Wolinska; W. Wolski

doi:10.1103/PhysRevC.69.064304

Observation of a core-excited E4 isomer in 98Cd

A. Blazhev, M. Gorska, H. Grawe, J. Nyberg, M. Palacz, E. Caurier, O. Dorvaux, A. Gadea, F. Nowacki, C. Andreoiu, G. de Angelis, D. Balabanski, Ch. Beck, B. Cederwall, D. Curien, J. Doring, J. Ekman, C. Fahlander, K. Lagergren, J. LjungvallM. Moszynski, L.O. Norlin, C. Plettner, D. Rudolph, D. Sohler, K.M. Spohr, O. Thelen, M. Weiszflog, M. Wisell, M. Wolinska, W. Wolski

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Abstract

A core-excited Iπ=(12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known Iπ=(8+) seniority isomer by an E4 transition. Half-lives of T1∕2=0.23(+4−3)μs and 0.17(+6−4)μs were measured for the two states at Ex=6635keV and 2428keV, respectively. From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15)MeV is inferred. The measured E4 and E2 strengths, 100Sncore excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of δeπ<0.4e is found, which corresponds to the empirical value δeπ=0.45(+20−25)e in the pure proton hole valence space.

Original language	English
Article number	064304
Journal	Physical Review C
Volume	69
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.69.064304
Publication status	Published - 3 Jun 2004

Keywords

shell-model calculations
80-100 mass region
high-spin states
GE detectors
beta-decay
50 nuclei
SN-100
polarization
particle
spectra

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10.1103/PhysRevC.69.064304

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Blazhev, A., Gorska, M., Grawe, H., Nyberg, J., Palacz, M., Caurier, E., Dorvaux, O., Gadea, A., Nowacki, F., Andreoiu, C., de Angelis, G., Balabanski, D., Beck, C., Cederwall, B., Curien, D., Doring, J., Ekman, J., Fahlander, C., Lagergren, K., ... Wolski, W. (2004). Observation of a core-excited E4 isomer in 98Cd. Physical Review C, 69(6), Article 064304. https://doi.org/10.1103/PhysRevC.69.064304

@article{12e13fc36bda4d87bf087b8d22f0b2eb,

title = "Observation of a core-excited E4 isomer in 98Cd",

abstract = "A core-excited Iπ=(12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known Iπ=(8+) seniority isomer by an E4 transition. Half-lives of T1∕2=0.23(+4−3)μs and 0.17(+6−4)μs were measured for the two states at Ex=6635keV and 2428keV, respectively. From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15)MeV is inferred. The measured E4 and E2 strengths, 100Sncore excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of δeπ<0.4e is found, which corresponds to the empirical value δeπ=0.45(+20−25)e in the pure proton hole valence space.",

keywords = "shell-model calculations, 80-100 mass region, high-spin states, GE detectors, beta-decay, 50 nuclei, SN-100, polarization, particle, spectra",

author = "A. Blazhev and M. Gorska and H. Grawe and J. Nyberg and M. Palacz and E. Caurier and O. Dorvaux and A. Gadea and F. Nowacki and C. Andreoiu and {de Angelis}, G. and D. Balabanski and Ch. Beck and B. Cederwall and D. Curien and J. Doring and J. Ekman and C. Fahlander and K. Lagergren and J. Ljungvall and M. Moszynski and L.O. Norlin and C. Plettner and D. Rudolph and D. Sohler and K.M. Spohr and O. Thelen and M. Weiszflog and M. Wisell and M. Wolinska and W. Wolski",

year = "2004",

month = jun,

day = "3",

doi = "10.1103/PhysRevC.69.064304",

language = "English",

volume = "69",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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Blazhev, A, Gorska, M, Grawe, H, Nyberg, J, Palacz, M, Caurier, E, Dorvaux, O, Gadea, A, Nowacki, F, Andreoiu, C, de Angelis, G, Balabanski, D, Beck, C, Cederwall, B, Curien, D, Doring, J, Ekman, J, Fahlander, C, Lagergren, K, Ljungvall, J, Moszynski, M, Norlin, LO, Plettner, C, Rudolph, D, Sohler, D, Spohr, KM, Thelen, O, Weiszflog, M, Wisell, M, Wolinska, M & Wolski, W 2004, 'Observation of a core-excited E4 isomer in 98Cd', Physical Review C, vol. 69, no. 6, 064304. https://doi.org/10.1103/PhysRevC.69.064304

TY - JOUR

T1 - Observation of a core-excited E4 isomer in 98Cd

AU - Blazhev, A.

AU - Gorska, M.

AU - Grawe, H.

AU - Nyberg, J.

AU - Palacz, M.

AU - Caurier, E.

AU - Dorvaux, O.

AU - Gadea, A.

AU - Nowacki, F.

AU - Andreoiu, C.

AU - de Angelis, G.

AU - Balabanski, D.

AU - Beck, Ch.

AU - Cederwall, B.

AU - Curien, D.

AU - Doring, J.

AU - Ekman, J.

AU - Fahlander, C.

AU - Lagergren, K.

AU - Ljungvall, J.

AU - Moszynski, M.

AU - Norlin, L.O.

AU - Plettner, C.

AU - Rudolph, D.

AU - Sohler, D.

AU - Spohr, K.M.

AU - Thelen, O.

AU - Weiszflog, M.

AU - Wisell, M.

AU - Wolinska, M.

AU - Wolski, W.

PY - 2004/6/3

Y1 - 2004/6/3

N2 - A core-excited Iπ=(12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known Iπ=(8+) seniority isomer by an E4 transition. Half-lives of T1∕2=0.23(+4−3)μs and 0.17(+6−4)μs were measured for the two states at Ex=6635keV and 2428keV, respectively. From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15)MeV is inferred. The measured E4 and E2 strengths, 100Sncore excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of δeπ<0.4e is found, which corresponds to the empirical value δeπ=0.45(+20−25)e in the pure proton hole valence space.

AB - A core-excited Iπ=(12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known Iπ=(8+) seniority isomer by an E4 transition. Half-lives of T1∕2=0.23(+4−3)μs and 0.17(+6−4)μs were measured for the two states at Ex=6635keV and 2428keV, respectively. From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15)MeV is inferred. The measured E4 and E2 strengths, 100Sncore excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of δeπ<0.4e is found, which corresponds to the empirical value δeπ=0.45(+20−25)e in the pure proton hole valence space.

KW - shell-model calculations

KW - 80-100 mass region

KW - high-spin states

KW - GE detectors

KW - beta-decay

KW - 50 nuclei

KW - SN-100

KW - polarization

KW - particle

KW - spectra

U2 - 10.1103/PhysRevC.69.064304

DO - 10.1103/PhysRevC.69.064304

M3 - Article

SN - 2469-9985

VL - 69

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064304

ER -

Observation of a core-excited E4 isomer in 98Cd

Abstract

Keywords

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