Doppler broadening effect to neutron resonance cross sections for Ag, AgCl, and Ag/sub 2/O. [Yield, Debye temperature]

Abstract

The neutron capture yield of the 16.3 eV resonance in /sup 107/Ag was measured, using targets of Ag metal, AgCl and Ag/sub 2/O at room, liquid N/sub 2/ and He temperatures. The effective temperature T' defined by Lamb for weak binding, and subsequently the Debye temperature theta/sub D/, were extracted for each case by a least squares shape fit. For Ag metal the measured theta/sub D/ values agree with both the simple Debye theory and a prediction of the Ag lattice dynamics. The theta/sub D/ values for AgCl and Ag/sub 2/O show some variations with temperature. The results for AgCl at 77.2 and 4.066/sup 0/, however, agree with the inelastic scattering and calorimetric data. 12 references