Application of the Debye model to scattering neutrons from crystals
R. N. Stuart, Lawrence Livermore Laboratory, University of California, Berkeley. Lawrence Radiation Laboratory
University of California Lawrence Radiation Laboratory, 1963 - Science - 30 pages
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2m V M 2NMoo applied the Debye cr dft'dE cross section versus CRYSTALS R. N. Stuart D. E. Parks dcr dE1 dcr/dE Debye crystal Debye model Differential cross section dt exp dx cos ax E/kT for M/m evaluated exp e/T exp f-f exp f3 exp[iK expand final neutron gas with temperature gives graphite H l,t Hamiltonian ideal gas incoherent approximation K. S. Singwi L. S. Kothari Lawrence Radiation Laboratory Livermore Logarithmic energy decrement low neutron energies Marshall and R. N. Mcr/mE MODEL TO SCATTERING N/TT NEUTRONS FROM CRYSTALS Nucl number of atoms phonon expansion Phys q.i qM quantum number R. C. Bhandari Rn(t scattering cross section scattering length SCATTERING OF NEUTRONS section versus energy short-collision-time approximation target term in 74 time-dependent Total cross section two-phonon terms UNIVERSITY OF CALIFORNIA versus E/kT Z(co Z(oo