Accession Number : ADA297719

Title :   Total Neutron Cross Sections of Compounds with Different Crystalline Structures,

Corporate Author : ARGONNE NATIONAL LAB IL

Personal Author(s) : Winsberg, Lester ; Meneghetti, David ; Sidhu, S. S.

PDF Url : ADA297719

Report Date : AUG 1948

Pagination or Media Count : 10

Abstract : The total neutron cross sections of polycrystalline compounds, such as closed packed hexagonal ZnO, body centered cubic TiBr, and face centered cubic CaO and TiC were determined with the Argonne neutron velocity selector and neutron crystal spectrometer in the energy region of 0.001 to 1.0 electron volt. From the size of the cross section peaks which are due to coherent scattering of neutrons the following scattering amplitudes were determined: Ca, +0.46 x 10-l2 cm; Ti, -0.25 x 10-12 cm; T1, +0.75 x 10-12 cm. The previously reported value of +0.58 x 10-12 cm for Zn was confirmed. The free atom scattering cross section of Ca is 2.5 barns.

Descriptors :   *CRYSTAL STRUCTURE, *NEUTRON CROSS SECTIONS, SCATTERING CROSS SECTIONS, CRYSTALS, ZINC OXIDES, POLYCRYSTALLINE, CALCIUM OXIDES, COHERENT SCATTERING, NEUTRON SCATTERING, NEUTRON SPECTROMETERS.

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE