Observation of a core-excited E4 isomer in 98Cd

Observation of a core-excited E4 isomer in 98Cd. Blazhev, A., Górska, 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., Döring, J., Ekman, J., Fahlander, C., Lagergren, K., Ljungvall, J., Moszyński, M., Norlin, L. O., Plettner, C., Rudolph, D., Sohler, D., Spohr, K. M., Thelen, O., Weiszflog, M., Wisell, M., Wolińska, M., & Wolski, W. Physical Review C - Nuclear Physics, 69(6):64304, jun, 2004.

Paper doi abstract bibtex

A core-excited I$\pi$=(12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known I$\pi$=(8+) seniority isomer by an E4 transition. Half-lives of T1/2=0.23(-3+4) /its and 0.17(-4+6) $\mu$s were measured for the two states at Ex,=6635 keV and 2428 keV, 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 W2 strengths, 100Sn core 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 $\delta$e$\pi$0.45(-25+20 e is found, which corresponds to the empirical value $\delta$e$\pi$=0.45( -25+20) e in the pure proton hole valence space.

@article{blazhev_observation_2004,
abstract = {A core-excited I$\pi$=(12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known I$\pi$=(8+) seniority isomer by an E4 transition. Half-lives of T1/2=0.23(-3+4) /its and 0.17(-4+6) $\mu$s were measured for the two states at Ex,=6635 keV and 2428 keV, 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 W2 strengths, 100Sn core 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 $\delta$e$\pi$0.45(-25+20 e is found, which corresponds to the empirical value $\delta$e$\pi$=0.45( -25+20) e in the pure proton hole valence space.},
annote = {From Duplicate 1 (Observation of a core-excited E4 isomer in 98Cd - Blazhev, A.; G{\'{o}}rska, M.; Grawe, H.; Nyberg, J.; Palacz, M.; Caurier, E.; Dorvaux, O.; Gadea, A.; Nowacki, F.; Andreoiu, C.; De Angelis, G.; Balabanski, D.; Beck, Ch; Cederwall, B.; Curien, D.; D{\"{o}}ring, J.; Ekman, J.; Fahlander, C.; Lagergren, K.; Ljungvall, J.; Moszy{\'{n}}ski, M.; Norlin, L. O.; Plettner, C.; Rudolph, D.; Sohler, D.; Spohr, K. M.; Thelen, O.; Weiszflog, M.; Wisell, M.; Woli{\'{n}}ska, M.; Wolski, W.)

Publisher: American Physical Society},
author = {Blazhev, A. and G{\'{o}}rska, M. and Grawe, H. and Nyberg, J. and Palacz, M. and Caurier, E. and Dorvaux, O. and Gadea, A. and Nowacki, F. and Andreoiu, C. and {De Angelis}, G. and Balabanski, D. and Beck, Ch and Cederwall, B. and Curien, D. and D{\"{o}}ring, J. and Ekman, J. and Fahlander, C. and Lagergren, K. and Ljungvall, J. and Moszy{\'{n}}ski, M. and Norlin, L. O. and Plettner, C. and Rudolph, D. and Sohler, D. and Spohr, K. M. and Thelen, O. and Weiszflog, M. and Wisell, M. and Woli{\'{n}}ska, M. and Wolski, W.},
doi = {10.1103/PhysRevC.69.064304},
issn = {1089490X},
journal = {Physical Review C - Nuclear Physics},
month = {jun},
number = {6},
pages = {64304},
title = {{Observation of a core-excited E4 isomer in 98Cd}},
url = {http://link.aps.org/doi/10.1103/PhysRevC.69.064304},
volume = {69},
year = {2004}
}

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From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15) MeV is inferred. The measured E4 and W2 strengths, 100Sn core 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 $\\delta$e$\\pi$0.45(-25+20 e is found, which corresponds to the empirical value $\\delta$e$\\pi$=0.45( -25+20) e in the pure proton hole valence space.","annote":"From Duplicate 1 (Observation of a core-excited E4 isomer in 98Cd - Blazhev, A.; Górska, M.; Grawe, H.; Nyberg, J.; Palacz, M.; Caurier, E.; Dorvaux, O.; Gadea, A.; Nowacki, F.; Andreoiu, C.; De Angelis, G.; Balabanski, D.; Beck, Ch; Cederwall, B.; Curien, D.; Döring, J.; Ekman, J.; Fahlander, C.; Lagergren, K.; Ljungvall, J.; Moszyński, M.; Norlin, L. O.; Plettner, C.; Rudolph, D.; Sohler, D.; Spohr, K. M.; Thelen, O.; Weiszflog, M.; Wisell, M.; Wolińska, M.; Wolski, W.) 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