Zobrazeno 1 - 10
of 380
pro vyhledávání: '"V.N. Baier"'
Autor:
V.M. Katkov, V.N. Baier
Publikováno v:
Physics Letters A. 374:2201-2206
The process of pair creation by a photon in a constant and homogeneous electric field is investigated basing on the polarization operator in the field. The total probability of the process is found in a relatively simple form. At high energy the quas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2ba353cd9b365262019f436133031a8
https://doi.org/10.1016/j.physleta.2010.01.051
https://doi.org/10.1016/j.physleta.2010.01.051
Autor:
V. M. Katkov, V.N. Baier
Publikováno v:
Physics Reports. 409:261-359
The features of electromagnetic processes are considered which connected with finite size of space region in which final particles (photon, electron-positron pair) are formed. The longitudinal dimension of the region is known as the formation length.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3872d15740395b83352f18feca17910a
https://doi.org/10.1016/j.physrep.2004.11.003
https://doi.org/10.1016/j.physrep.2004.11.003
Autor:
V.M. Katkov, V.N. Baier
Publikováno v:
Physics Letters A. 327:202-209
The photon emission intensity spectrum is calculated taking into account influence of multiple scattering (the LPM effect) under conditions of recent CERN SPS experiment. It is shown that the theory quite satisfactory describes data. The integral cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdb01b797e433bd7e3480628f93e4f1b
https://doi.org/10.1016/j.physleta.2004.04.080
https://doi.org/10.1016/j.physleta.2004.04.080
Autor:
V.N. Baier, V. M. Strakhovenko
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 155:403-408
Yield of positrons created by high-energy electrons in crystalline and amorphous tungsten targets is calculated as a function of a target thickness. The phase space inherent in positron sources is studied. Corresponding electron–photon showers init
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9d17bb3969b16fcb1d7fba38827eca5
https://doi.org/10.1016/s0168-583x(99)00254-2
https://doi.org/10.1016/s0168-583x(99)00254-2
Autor:
V.N. Baier, V.M. Katkov
Publikováno v:
Physics Letters A. 232:456-462
The effect of radiative damping of transverse oscillations of positrons in the planar channel of a crystal is considered under realistic conditions when multiple scattering of the positrons on the atomic electrons is taken into account.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b23fbd0eb40146d9ec82daa4d3142816
https://doi.org/10.1016/s0375-9601(97)00403-9
https://doi.org/10.1016/s0375-9601(97)00403-9
Publikováno v:
Journal of Experimental and Theoretical Physics. 84:29-34
We analyze the splitting of a photon with energy ω below the e+e− pair-production threshold in an ultrastrong magnetic field. We use the amplitudes found by employing the operator diagrammatic technique. In a field considerably above the critical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dcb86d861a80300b432fea72e035054
https://doi.org/10.1134/1.558149
https://doi.org/10.1134/1.558149
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 119:131-136
The development of an electromagnetic cascade at axial alignment of a single crystal is discussed. For the initial electron energies of a few GeV special attention is paid to the production of positrons in given phase-space, providing the possibility
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::538c78329c1cf4177e3e1c6ee1542e06
https://doi.org/10.1016/0168-583x(96)00048-1
https://doi.org/10.1016/0168-583x(96)00048-1
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 103:147-155
Specific features of electromagnetic showers in crystals initiated by electrons with energies of a few GeV are considered, basing on a model form of radiation spectrum at axial alignment. Formulae describing the influence of ordered crystalline struc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::825dc81774e51aca8da98549d7e063c8
https://doi.org/10.1016/0168-583x(95)00653-2
https://doi.org/10.1016/0168-583x(95)00653-2
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 344:443-454
A non-conventional positron source using 1.5–20 GeV electron beam impinging on a tungsten crystal oriented along its 〈111〉 axis is described. Computer simulation taking into account photon creation in the crystal, positron generation in a subse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31342aeb15dcb61b7d55ae6771649a6e
https://doi.org/10.1016/0168-9002(94)90865-6
https://doi.org/10.1016/0168-9002(94)90865-6
Publikováno v:
Zeitschrift für Physik C Particles and Fields. 60:671-675
New representations of the total probability of radiation and of the radiative energy loss for charged particle moving in an arbitrary extenal field are obtained in the frame of the quasiclassical operator approach in the quantum electrodynamics. Fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a367a62153b6897aa2bdcf89cf21146
https://doi.org/10.1007/bf01558395
https://doi.org/10.1007/bf01558395