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Effects of s-Process Branchings on Stellar and Meteoritic Abundances*

Published online by Cambridge University Press:  04 August 2017

E. B. Norman ,
K. T. Lesko ,
S. G. Crane ,
R. M. Larimer  and
A. E. Champagne
E. B. Norman
Affiliation:
Nuclear Science Division, Lawrence Berkeley Laboratory Berkeley, CA 94720 U.S.A.
K. T. Lesko
Affiliation:
Nuclear Science Division, Lawrence Berkeley Laboratory Berkeley, CA 94720 U.S.A.
S. G. Crane
Affiliation:
Nuclear Science Division, Lawrence Berkeley Laboratory Berkeley, CA 94720 U.S.A.
R. M. Larimer
Affiliation:
Nuclear Science Division, Lawrence Berkeley Laboratory Berkeley, CA 94720 U.S.A.
A. E. Champagne
Affiliation:
Physics Department, Princeton University Princeton, NJ 08544 U.S.A.

Abstract

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The level scheme and electromagnetic properties of 148Pm have been studied using 149Sm(d, 3He) and 148Nd(p, nγ) reactions. Combining these measurements with estimates for E2/M1 decay branching ratios leads to the tentative conclusion that 148Pmg,m are in thermal equilibrium during the s-process. The branch at 148Pm then leads to an inferred s-process neutron density of 3 × 108 cm−3.

Type
Meteorites
Information
Symposium - International Astronomical Union , Volume 120: Astrochemistry , 1987 , pp. 493 - 494
Copyright
Copyright © Reidel 1987 

References

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