Effects of shape/phase transition regions on neutron capture cross sections

Author:

Couture A.ORCID,Cakirli R. B.,Casten R. F.

Abstract

AbstractA recent study found a new, purely empirical correlation between two-neutron separation energies and neutron capture cross sections in keV neutron energy regimes. In shape/phase transition regimes, such as that near A= 150, S$$_{2n}$$ 2 n values show an anomaly—a flattening of the normal near linear decrease with neutron number. This paper addresses two questions: (1) Using this new correlation, is this anomaly in S$$_{2n}$$ 2 n values sizeable enough to produce an observable effect in capture cross sections? and (2) Can the correlation be used to quantitatively reproduce the cross sections in the transition region? It is found that the answer to both questions is in the affirmative. Possible relations to the r-process are briefly discussed.

Funder

Los Alamos National Laboratory

Max-Planck-Partner group

Publisher

Springer Science and Business Media LLC

Reference20 articles.

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