Universität zu Köln

Lica, R., Benzoni, G., Rodriguez, T. R., Borge, M. J. G., Fraile, L. M., Mach, H., Morales, A. I., Madurga, M., Sotty, C. O., Vedia, V., De Witte, H., Benito, J., Bernard, R. N., Berry, T., Bracco, A., Camera, F., Ceruti, S., Charviakova, V., Cieplicka-Orynczak, N., Costache, C., Crespi, F. C. L., Creswell, J., Fernandez-Martinez, G., Fynbo, H., Greenlees, P. T., Homm, I., Huyse, M., Jolie, J., Karayonchev, V., Koster, U., Konki, J., Kroell, T., Kurcewicz, J., Kurtukian-Nieto, T., Lazarus, I., Lund, M. V., Marginean, N., Marginean, R., Mihai, C., Mihai, R. E., Negret, A., Orduz, A., Patyk, Z., Pascu, S., Pucknell, V., Rahkila, P., Rapisarda, E., Regis, J. M., Robledo, L. M., Rotaru, F., Saed-Samii, N., Sanchez-Tembleque, V., Stanoiu, M., Tengblad, O., Thuerauf, M., Turturica, A., Van Duppen, P. and Warr, N. (2018). Evolution of deformation in neutron-rich Ba isotopes up to A=150. Phys. Rev. C, 97 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

The occurrence of octupolar shapes in the Ba isotopic chain was recently established experimentally up to N = 90. To further extend the systematics, the evolution of shapes in the most neutron-rich members of the Z = 56 isotopic chain accessible at present, Ba-148,Ba-150, has been studied via beta decay at the ISOLDE Decay Station. This paper reports on the first measurement of the positive-and negative-parity low-spin excited states of 150Ba and presents an extension of the beta-decay scheme of Cs-148. Employing the fast timing technique, half-lives for the 2(1)(+) level in both nuclei have been determined, resulting in T-1/2 = 1.51(1) ns for Ba-148 and T-1/2 = 3.4(2) ns for Ba-150. The systematics of low-spin states, together with the experimental determination of the B(E2 : 2(+) -> 0(+)) transition probabilities, indicate an increasing collectivity in Ba148-150, towards prolate deformed shapes. The experimental data are compared to symmetry conserving configuration mixing (SCCM) calculations, confirming an evolution of increasingly quadrupole deformed shapes with a definite octupolar character.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lica, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benzoni, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rodriguez, T. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Borge, M. J. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fraile, L. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mach, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Morales, A. I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Madurga, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sotty, C. O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vedia, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED De Witte, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benito, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bernard, R. N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Berry, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bracco, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Camera, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ceruti, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Charviakova, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cieplicka-Orynczak, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Costache, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Crespi, F. C. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Creswell, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fernandez-Martinez, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fynbo, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Greenlees, P. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Homm, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Huyse, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jolie, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Karayonchev, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Koster, U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Konki, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kroell, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurcewicz, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurtukian-Nieto, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lazarus, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lund, M. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marginean, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marginean, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mihai, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mihai, R. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Negret, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Orduz, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Patyk, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pascu, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pucknell, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rahkila, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rapisarda, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Regis, J. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Robledo, L. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rotaru, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Saed-Samii, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchez-Tembleque, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stanoiu, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tengblad, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thuerauf, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Turturica, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Van Duppen, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Warr, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-196169
DOI:	10.1103/PhysRevC.97.024305
Journal or Publication Title:	Phys. Rev. C
Volume:	97
Number:	2
Date:	2018
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 BETA-DECAY; NUCLEI; FACILITY; REGION; LA-148; BA-148; STATES; SHELL Multiple languages Physics, Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19616