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On the theory of coherent pair production in crystals in presence of acoustic waves

A. R. Mkrtchyan·A. A. Saharian·L. Sh. Grigoryan·B. V. Khachatryan
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Abstract

The influence of hypersonic waves excited in a single crystal is investigated on the process of electron-positron pair creation by high-energy photons. The coherent part of the corresponding differential cross-section is derived as a function of the amplitude and wave number of the hypersound. The values of the parameters are specified for which the latter affects remarkably on the pair creation cross-section. It is shown that under certain conditions the presence of hypersonic waves can result in enhancement of the process cross-section.

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A. R. Mkrtchyan, A. A. Saharian, L. Sh. Grigoryan, B. V. Khachatryan. 2002-08-30. On the theory of coherent pair production in crystals in presence of acoustic waves. https://doi.org/10.1142/s0217732302008228

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