Study of the relative merits of various computational models for evaluation of resonance J(phi, β) function

The resonance J(phi,β) function has been evaluated and tabulated for a wide range of phi and β values of interest in fast reactor physics calculations with various available computational models with an aim to assess their relative merits. The computational models investigated for this prupose are those developed by Steen, Sahni and Menon, Hwang, Gelbard, Nicholson and Grasseschi, and that used in the code DOPINT. The degree of sophistication which includes the range of applicability and accuracy and the computing time requirement of each of these computational models has been assessed and reported. (orig.)