Morales, A. I., Benlliure, J., Kurtukian-Nieto, T., Schmidt, K. -H, Verma, S., Regan, P. H., Podolyak, Z., Gorska, M., Pietri, S., Kumar, R., Casarejos, E., Al-Dahan, N., Algora, A., Alkhomashi, N., Alvarez-Pol, H., Benzoni, G., Blazhev, A., Boutachkov, P., Bruce, A. M., Caceres, L. S., Cullen, I. J., Bacelar, A. M. Denis, Doornenbal, P., Estevez-Aguado, M. E., Farrelly, G., Fujita, Y., Garnsworthy, A. B., Gelletly, W., Gerl, J., Grebosz, J., Hoischen, R., Kojouharov, I., Kurz, N., Lalkovski, S., Liu, Z., Mihai, C., Molina, F., Muecher, D., Rubio, B., Shaffner, H., Steer, S. J., Tamii, A., Tashenov, S., Valiente-Dobon, J. J., Walker, P. M., Wollersheim, H. J. and Woods, P. J. (2014). Half-Life Systematics across the N=126 Shell Closure: Role of First-Forbidden Transitions in the beta Decay of Heavy Neutron-Rich Nuclei. Phys. Rev. Lett., 113 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

This Letter reports on a systematic study of beta-decay half-lives of neutron-rich nuclei around doubly magic Pb-208. The lifetimes of the 126-neutron shell isotone Pt-204 and the neighboring Ir200-202, Pt-203, Au-204 are presented together with other 19 half-lives measured during the stopped beam campaign of the rare isotope investigations at GSI collaboration. The results constrain the main nuclear theories used in calculations of r-process nucleosynthesis. Predictions based on a statistical macroscopic description of the first-forbidden beta strength reveal significant deviations for most of the nuclei with N < 126. In contrast, theories including a fully microscopic treatment of allowed and first-forbidden transitions reproduce more satisfactorily the trend in the measured half-lives for the nuclei in this region, where the r-process pathway passes through during beta decay back to stability.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Morales, A. I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benlliure, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kurtukian-Nieto, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmidt, K. -HUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Verma, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Regan, P. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Podolyak, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gorska, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pietri, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kumar, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Casarejos, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Al-Dahan, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Algora, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alkhomashi, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alvarez-Pol, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benzoni, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blazhev, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boutachkov, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruce, A. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caceres, L. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cullen, I. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bacelar, A. M. DenisUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Doornenbal, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Estevez-Aguado, M. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Farrelly, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fujita, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garnsworthy, A. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gelletly, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gerl, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grebosz, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hoischen, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kojouharov, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kurz, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lalkovski, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mihai, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Molina, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Muecher, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rubio, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shaffner, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Steer, S. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tamii, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tashenov, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, J. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Walker, P. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wollersheim, H. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woods, P. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-433998
DOI: 10.1103/PhysRevLett.113.022702
Journal or Publication Title: Phys. Rev. Lett.
Volume: 113
Number: 2
Date: 2014
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
1ST MEASUREMENT; SPECTROSCOPY; ELEMENTS; LIVESMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/43399

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