# First access to $\beta$ half-lives approaching the r-process path near N=126

Abstract : Heavy neutron-rich nuclei close to N=126 were produced by fragmentation of a 1 A GeV 208Pb beam at the FRS at GSI. The beta-decay half-lives of 8 nuclides have been determined. The comparison of the data with model calculations including an approach based on the self-consistent ground-state description and continuum QRPA considering the Gamow-Teller and first-forbidden decays provide a first indication on the importance of first-forbidden transitions around A=195. The measured data indicate that the matter flow in the r-process to heavier fissioning nuclei is faster than previously expected.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00184813
Contributor : Dominique Girod <>
Submitted on : Friday, November 2, 2007 - 8:32:04 AM
Last modification on : Monday, November 25, 2019 - 2:10:04 PM

### Identifiers

• HAL Id : in2p3-00184813, version 1
• ARXIV : 0711.0101

### Citation

T. Kurtukian Nieto, J. Benlliure, L. Audouin, F. Becker, B. Blank, et al.. First access to $\beta$ half-lives approaching the r-process path near N=126. International Conference on Particles and Nuclei, Nov 2008, Eilat, Israel. ⟨in2p3-00184813⟩

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