Asymmetry ratio in pair production and the degree of linearly polarized photons at intermediate energies

In order to initiate the experiments using linearly polarized tagged photons at intermediate energies, it is imperative to know and to monitor the degree of polarization. The relationship is re-examined between the linear polarization of photons and the asymmetry ratio in pair production by such pho...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 1999-08, Vol.432 (2-3), p.195-201
Main Authors: Asai, J, Skopik, D.M
Format: Article
Language:English
Subjects:
Asymmetry ratio in pair production
Degree of linear polarization of tagged photons
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Summary:In order to initiate the experiments using linearly polarized tagged photons at intermediate energies, it is imperative to know and to monitor the degree of polarization. The relationship is re-examined between the linear polarization of photons and the asymmetry ratio in pair production by such photons. An improved method is proposed in which pairs are prohibited from entering the cone region around the incident photon beam. By restricting the directions of pairs, the asymmetry ratio is much improved.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(99)00341-1