Universität zu Köln

Das, B., Cederwall, B., Qi, C., Gorska, M., Regan, P. H., Aktas, O., Albers, H. M., Banerjee, A., Chishti, M. M. R., Gerl, J., Hubbard, N., Jazrawi, S., Jolie, J., Mistry, A. K., Polettini, M., Yaneva, A., Alhomaidhi, S., Zhao, J., Arici, T., Bagchi, S., Benzoni, G., Boutachkov, P., Davinson, T., Dickel, T., Haettner, E., Hall, O., Hornung, Ch, Hucka, J. P., John, P. R., Kojouharov, I, Knoebel, R., Kostyleva, D., Kuzminchuk, N., Mukha, I, Plass, W. R., Singh, B. S. Nara, Vasiljevic, J., Pietri, S., Podolyak, Zs, Rudigier, M., Roesch, H., Sahin, E., Schaffner, H., Scheidenberger, C., Schirru, F., Sharma, A., Shearman, R., Tanaka, Y., Vesic, J., Weick, H., Wollersheim, H. J., Ahmed, U., Algora, A., Appleton, C., Benito, J., Blazhev, A., Bracco, A., Bruce, A. M., Brunet, M., Canavan, R., Esmaylzadeh, A., Fraile, L. M., Haefner, G., Heggen, H., Kahl, D., Karayonchev, V, Kern, R., Korgu, A., Kosir, G., Kurz, N., Lozeva, R., Mikolajczuk, M., Napiralla, P., Page, R., Petrache, C. M., Pietralla, N., Regis, J-M, Ruotsalainen, P., Sexton, L., Sanchez-Temble, V, Si, M., Vilhena, J., Werner, V, Wiederhold, J., Witt, W., Woods, P. J. and Zimba, G. (2022). Nature of seniority symmetry breaking in the semimagic nucleus Ru-94. Phys. Rev. C, 105 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

Direct lifetime measurements via gamma -gamma coincidences using a fast timing detector array consisting of LaBr3(Ce) scintillators has been applied to determine the lifetime of low-lying states in the semimagic (N = 50) nucleus Ru-94. The experiment was carried out as the first in a series of FAIR-0 experiments with the DESPEC experimental setup at the Facility for Antiproton and Ion Research (FAIR). Excited states in Ru-94 were populated primarily via the beta-delayed proton emission of Pd-95 nuclei, produced in the projectile fragmentation of an 850 MeV/nucleon Xe-124 beam impinging on a 4 g/cm(2) Be-9 target. While the deduced E2 strength for the 2(+) -> 0(+) transition in the yrast cascade follows the expected behavior for conserved seniority symmetry, the intermediate 4(+) -> 2(+) transition exhibits a drastic enhancement of transition strength in comparison with pure-seniority model predictions as well as standard shell model predictions in the f pg proton hole space with respect to doubly magic Sn-100. The anomalous behavior is ascribed to a subtle interference between the wave function of the lowest seniority v = 2, I-pi = 4(+) state and that of a close-lying v = 4 state that exhibits partial dynamic symmetry. In addition, the observed strongly prohibitive 6(+) -> 4(+) transition can be attributed to the same mechanism but with a destructive interference. It is noted that such effects may provide stringent tests of the nucleon-nucleon interactions employed in state-of-the-art theoretical model calculations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Das, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cederwall, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Qi, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gorska, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Regan, P. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Aktas, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Albers, H. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Banerjee, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chishti, M. M. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerl, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hubbard, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jazrawi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jolie, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mistry, A. K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Polettini, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yaneva, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Alhomaidhi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhao, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Arici, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bagchi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benzoni, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boutachkov, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Davinson, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dickel, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Haettner, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hall, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hornung, Ch UNSPECIFIED UNSPECIFIED UNSPECIFIED Hucka, J. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED John, P. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kojouharov, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Knoebel, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kostyleva, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuzminchuk, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mukha, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Plass, W. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Singh, B. S. Nara UNSPECIFIED UNSPECIFIED UNSPECIFIED Vasiljevic, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pietri, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Podolyak, Zs UNSPECIFIED UNSPECIFIED UNSPECIFIED Rudigier, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Roesch, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sahin, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schaffner, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Scheidenberger, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schirru, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sharma, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Shearman, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tanaka, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vesic, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Weick, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wollersheim, H. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ahmed, U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Algora, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Appleton, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benito, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Blazhev, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bracco, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bruce, A. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Brunet, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Canavan, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Esmaylzadeh, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fraile, L. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Haefner, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heggen, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kahl, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Karayonchev, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Kern, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Korgu, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kosir, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurz, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lozeva, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mikolajczuk, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Napiralla, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Page, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Petrache, C. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pietralla, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Regis, J-M UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruotsalainen, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sexton, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchez-Temble, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Si, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vilhena, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Werner, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Wiederhold, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Witt, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Woods, P. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zimba, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-697740
DOI:	10.1103/PhysRevC.105.L031304
Journal or Publication Title:	Phys. Rev. C
Volume:	105
Number:	3
Date:	2022
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9993
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LEVEL STRUCTURE; EXCITED-STATES; N=50 ISOTONES; PROTON; SPECTROSCOPY; TRANSITIONS; DESPEC Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69774