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Effects of s-process branchings on stellar and meteoritic abundances

Description: The level scheme and electromagnetic properties of /sup 148/Pm have been studied using /sup 149/Sm(d,/sup 3/He) and /sup 148/Nd(p,n..gamma..) reactions. Combining these measurements with estimates for E2/M1 decay branching ratios leads to the tentative conclusion that /sup 148/Pm/sup g,m/ are in thermal equilibrium during the s-process. The branch at /sup 148/Pm then leads to an inferred s-process neutron density of 3 x 10/sup 8/ cm/sup -3/.
Date: December 1, 1985
Creator: Norman, E.B.; Lesko, K.T.; Crane, S.G.; Larimer, R.M. & Champagne, A.E.
Partner: UNT Libraries Government Documents Department

Influences of the astrophysical environment on nuclear decay rates

Description: In many astronomical environments, physical conditions are so extreme that nuclear decay rates can be significantly altered from their laboratory values. Such effects are relevant to a number of current problems in nuclear astrophysics. Experiments related to these problems are now being pursued, and will be described in this talk. 19 refs., 5 figs.
Date: September 1, 1987
Creator: Norman, E.B.
Partner: UNT Libraries Government Documents Department