Download or read book An Empirical Formula of the Coherent Scattering Cross Section of Gamma Rays written by A. Nath and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: An empirical formula was developed for estimating coherent scattering cross sections of gamma-rays of energies below 1.5 MeV and in the range of 0 - 2.5mc units of momentum transfer.The formula has been compared with the experimental data available in the literature in the case of Pb, Sn and Cu scatterers for different photon energies between 0.279 - 1.33 MeV.Experimental data, in general, have been found to be in good agreement with the results of the empirical formula, the deviation being within plus or minus 10% in most of the cases. The empirical formula has also been compared with the form factor results of Nelms and Oppenheim and with the accurate theoretical data of the Birmingham group.The latter is in excellent agreement with the empirical formula.(Author).