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:
CreatorsEmailORCIDORCID Put Code
Lica, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benzoni, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rodriguez, T. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borge, M. J. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fraile, L. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mach, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Morales, A. I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Madurga, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sotty, C. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vedia, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
De Witte, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benito, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bernard, R. N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Berry, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bracco, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Camera, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ceruti, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Charviakova, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cieplicka-Orynczak, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Costache, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crespi, F. C. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Creswell, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fernandez-Martinez, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fynbo, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Greenlees, P. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Homm, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huyse, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jolie, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Karayonchev, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koster, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Konki, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kroell, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kurcewicz, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kurtukian-Nieto, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lazarus, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lund, M. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mihai, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mihai, R. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Negret, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Orduz, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Patyk, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pascu, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pucknell, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rahkila, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rapisarda, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Regis, J. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Robledo, L. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rotaru, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saed-Samii, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchez-Tembleque, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stanoiu, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tengblad, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thuerauf, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Turturica, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Van Duppen, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Warr, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
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:
KeywordsLanguage
BETA-DECAY; NUCLEI; FACILITY; REGION; LA-148; BA-148; STATES; SHELLMultiple languages
Physics, NuclearMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/19616

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