Tables of ThermonuclearReactionRate Data for NeutronInduced Reactions on Heavy Nclei
Abstract
The results of statistical model calculations of ( n, γ), ( n, p), and ( n, α) cross sections and reactionrate factors are presented in tabular form for over 500 target nuclei in the range 36 ≤ Z ≤ 83 (krypton to bismuth). Included in these tables is information on (i) the reaction cross section as a function of energy for the exoergic channel in the range 0.01 ≤ E(MeV) ≤ 3.0; (ii) the thermally averaged reactionrate factor, N_{A}< σv> and the nuclear partition function G( T) for temperatures in the range 10 ^{8} ≤ T( ^{o}K) ≤ 3 × 10 ^{9}; (iii) analytic fits to the reactionrate factors and partition functions as functions of temperature; and (iv) nuclear leveldensity parameters and formulas for their extrapolation. Two types of reactionrate factors have been computed. One, which may be called the "laboratory rate factor," is based on the assumption that the target nuclei occupy only their ground states. The other, which shall be termed the "stellar rate factor," is based on the more realistic assumption that the target nuclei occupy a thermal distribution of excited states at temperature T. A brief discussion of theory and instructions for usage of the tables are included. New fitting forms for statisticalmodel thermonuclear reaction rates are presented and justified.
 Publication:

Atomic Data and Nuclear Data Tables
 Pub Date:
 1976
 DOI:
 10.1016/0092640X(76)900115
 Bibcode:
 1976ADNDT..18..305H