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β-decay half-lives of very neutron-rich Kr to Tc isotopes on the boundary of the r-process path: an indication of fast r-matter flow
- Source :
- Physical review letters. 106(5)
- Publication Year :
- 2010
-
Abstract
- The β-decay half-lives of 38 neutron-rich isotopes from (36)Kr to (43)Tc have been measured; the half-lives of (100)Kr, (103-105)Sr, (106-108)Y, (108-110)Zr, (111,112)Nb, (112-115)Mo, and (116,117)Tc are reported here. The results when compared with previous standard models indicate an overestimation in the predicted half-lives by a factor of 2 or more in the A≈110 region. A revised model based on the second generation gross theory of β decay better predicts the measured half-lives and suggests a more rapid flow of the rapid neutron-capture process (r-matter flow) through this region than previously predicted.
Details
- ISSN :
- 10797114
- Volume :
- 106
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Physical review letters
- Accession number :
- edsair.pmid.dedup....166c32a77b19022d52683466b9fa6dfb