Abstract
We investigate the coherent electron-positron pair creation 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 conditions are specified under which the influence of the deformation is considerable. 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 SiO2 single crystal and Moliere parametrization of the screened atomic potentials in the case of the deformation field generated by the acoustic wave of S type. In dependence of the parameters, the presence of deformation can either enhance or reduce the pair creation cross-section. This can be used to control the parameters of the positron sources for storage rings and colliders.
| Original language | English |
|---|---|
| Pages (from-to) | 1617-1627 |
| Number of pages | 11 |
| Journal | Modern Physics Letters B |
| Volume | 20 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - 30 Oct 2006 |
| Externally published | Yes |
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Keywords
- Coherent pair production
- Interaction of particles with matter
- Physical effects of ultrasonics
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Condensed Matter Physics
Cite this
Coherent pair production in deformed crystals with a complex base. / Mkrtchyan, A. R.; Saharian, A. A.; Parazian, V. V.
In: Modern Physics Letters B, Vol. 20, No. 25, 30.10.2006, p. 1617-1627.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Coherent pair production in deformed crystals with a complex base
AU - Mkrtchyan, A. R.
AU - Saharian, A. A.
AU - Parazian, V. V.
PY - 2006/10/30
Y1 - 2006/10/30
N2 - We investigate the coherent electron-positron pair creation 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 conditions are specified under which the influence of the deformation is considerable. 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 SiO2 single crystal and Moliere parametrization of the screened atomic potentials in the case of the deformation field generated by the acoustic wave of S type. In dependence of the parameters, the presence of deformation can either enhance or reduce the pair creation cross-section. This can be used to control the parameters of the positron sources for storage rings and colliders.
AB - We investigate the coherent electron-positron pair creation 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 conditions are specified under which the influence of the deformation is considerable. 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 SiO2 single crystal and Moliere parametrization of the screened atomic potentials in the case of the deformation field generated by the acoustic wave of S type. In dependence of the parameters, the presence of deformation can either enhance or reduce the pair creation cross-section. This can be used to control the parameters of the positron sources for storage rings and colliders.
KW - Coherent pair production
KW - Interaction of particles with matter
KW - Physical effects of ultrasonics
UR - http://www.scopus.com/inward/record.url?scp=33750709694&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750709694&partnerID=8YFLogxK
U2 - 10.1142/S0217984906012018
DO - 10.1142/S0217984906012018
M3 - Article
VL - 20
SP - 1617
EP - 1627
JO - Modern Physics Letters B
JF - Modern Physics Letters B
SN - 0217-9849
IS - 25
ER -