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arXiv · 0811.1864

Angular distribution of positrons in coherent pair production in deformed crystals

V. V. Parazian
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Abstract

We investigate the angular distribution of positrons in the coherent process electronpositron pair creation process by high-energy photons in a periodically deformed single crystal with a complex base. The formula for the corresponding differential cross-section is derived for an arbitrary deformation field. The case is considered in detail when the photon enters into the crystal at small angles with respect to a crystallographic axis. The results of the numerical calculations are presented for${\mathrm{SiO}}_{2}$ and diamond single crystals and Moliere parameterization of the screened atomic potentials in the case of the deformation field generated by the acoustic wave of S-type.

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V. V. Parazian. 2009-04-04. Angular distribution of positrons in coherent pair production in deformed crystals. https://doi.org/10.1088/0953-8984%2F21%2F18%2F185401

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