Validating (d,p$\gamma )$ as (n,$\gamma )$ surrogate in normal kinematics
ORAL
Abstract
Neutron capture through the s and r processes is responsible for almost all of the synthesis of the heavy elements. However, it is very difficult to measure (n,$\gamma )$ reactions on unstable nuclei especially when t$_{\mathrm{1/2}}$\textless 100 days. Given the importance of (n,$\gamma )$ reactions for understanding nucleosynthesis and applications in nuclear energy and national security, it is critical that a valid surrogate for (n,$\gamma )$ be developed. The 95Mo(d,p$\gamma )$ reaction was measured in normal kinematics at TAMU with the STARLiTER system [1] of segmented annular silicon strip detectors and clover HPGe detectors. Preliminary calculations of the formation of the compound nucleus and Hauser-Feshbach decay reproduce the measured 95Mo(n,$\gamma )$ cross sections[2]. By incorporating a calculation [3] of the transferred angular momentum in the (d,p) reaction as a function of excitation energy, preliminary analysis reproduces the observed (d,p) gamma-ray transition probabilities as a function of excitation energy. This preliminary analysis and those from using the observed gamma-ray transition probabilities to predict (n,$\gamma )$ cross sections will be presented. [1] R.J. Casperson et al., Phys. Rev. C 90, 034601 (2014) [2] A.R. De L. Musgrove et al., Nucl. Phys. A 270, 108 (1976) [3] G. Potel, F.M. Nunes, and I.J. Thompson, Phys. Rev C 92, 034611 (2015).
*This work is supported in part by the U.S. Department of Energy.
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