Virtual Excitation and Multiple Scattering Correction Terms to the Neutron Index of Refraction for Hydrogen
نویسندگان
چکیده
The neutron index of refraction is generally derived theoretically in the Fermi approximation. However, the Fermi approximation neglects the effects of the binding of the nuclei of a material as well as multiple scattering. Calculations by Nowak introduced correction terms to the neutron index of refraction that are quadratic in the scattering length and of order 10(-3) fm for hydrogen and deuterium. These correction terms produce a small shift in the final value for the coherent scattering length of H2 in a recent neutron interferometry experiment.
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عنوان ژورنال:
دوره 110 شماره
صفحات -
تاریخ انتشار 2005