Measurement of the Neutron-Proton and Neutron-Carbon Total Cross Section from 150 to 800 keV

There have been very few measurements of the total cross section for np scattering below 500 keV. In order to differentiate among NN potential models, improved cross section data between 20 and 600 keV are required. We measured the np and nC total cross sections in this energy region by transmission...

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Bibliographic Details
Published inarXiv.org
Main Authors Daub, B H, Henzl, V, Kovash, M A, Matthews, J L, Miller, Z W, Shoniyozov, K, Yang, H
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 28.01.2013
Subjects
Collimation
Energy transmission
Neutron beams
Neutrons
Nuclear cross sections
Physics - Nuclear Experiment
Scattering
Scintillation counters
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Summary:There have been very few measurements of the total cross section for np scattering below 500 keV. In order to differentiate among NN potential models, improved cross section data between 20 and 600 keV are required. We measured the np and nC total cross sections in this energy region by transmission; a collimated neutron beam was passed through CH2 and C samples and transmitted neutrons were detected by a BC-501A liquid scintillator. Cross sections were obtained with a precision of 1.1-2.0% between 150 and 800 keV using ratios of normalized neutron yields measured with and without the scattering samples in the beam. In energy regions where they overlap, the present results are consistent with existing precision measurements, and fill in a significant gap in the data between En = 150 and 500 keV.
ISSN:2331-8422
DOI:10.48550/arxiv.1211.2203