Kinetic approach to multiple scattering of negatively charged GeV particles in axial channels

Muralev, V. A.

doi:10.1016/0168-583x(84)90153-8

Cited by 6 publications

(1 citation statement)

References 20 publications

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“…Unfortunately, dechanneling has been analysed only numerically and the results contain only the lengths on which the given number of particles (500,b, 70%, etc.) leave a channel a t the initial stage of dechanneling (note that a t E = 1 GeV the results of the present paper are consistent with those of [12] for W and are noticeably different for Xi and Ge). As it follows from this paper and from [ 2 ] and [3], this is insufficient a t all to solve the radiation probleni.…”

Section: Brightness and Yield Of Radiationsupporting

confidence: 86%

Radiation yield of high‐energy electrons in thick crystals

Baier¹,

Katkov²,

Strakhovenko³

1986

Physica Status Solidi (b)

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The radiation of high-energy electrons moving near the crystalline axes in thick crystals is analysed. The radiation brightness and yield are discussed. The results obtained are compared with experiment.IIpOBeJeH aHaJIYI3 M3JIYZIeHMFI 3JIeKTpOHOB 60~1buoCi 3HeprllM IlpM ,I(BMXeHMll B6nH3H 1ipMCTaJIZMYeCKMX OCen B TOJICTbIX MOHOKPMCTaJIJIaX. 06cylrcfiam~cfi HPKOCTb PI BMXOa Ii3JIyYeHHFI. nOJIy'4eHHbIe pe3yJIbTaTbI CpaBHMBaIOTCH C 3KCIlepHMeHTOM. Description of Radiation in Thick CrystalsA theoretical description of the specific radiation which occurs when high-energy particles are moving near the crystalline planes, or axes, in single crystals, depends essentially on whether a crystal is thin or thick. I n thin crystals, by definition, the distribution function (DF) in a transverse (to the direction of the axes, or planes) phase space does not vary when the particles pass through a crystal and is defined by the initial conditions. I n thick crystals, a dependence of the D F on the depth of penetration of the particles into a crystal should be taken into account. Multiple scattering and radiation energy losses are referred to the basic processes which govern the kinetics of this function.To apply the effect under discussion as a source of hard and directed radiation concentrated within a comparatively narrow frequency range, it is thick crystals2) that are of greatest interest, in the range of not too high energies. One of the most important characteristics is the total radiation intensity into a given solid angle. I n this case, the interesting question is to find an optimal thickness of the crystal, L = Lo, for which the energy of radiation yield, a t a given collimation of the photon beam, is maximum. This range of problems was recently treated by the authors for the case of motion along the crystalline axes According t o the performed analysis [l, 21 dealing with the kinetics of the distribution, which is due t o multiple scattering, the D F for large depths ( I ) is of the form Prospekt Lavrenteva 11, 630090 Novosibirsk, USSR. z, In thin crystals [l], the particles lost is noticeable fraction of their energy only a t superhigh electron energies 6 2 eCT, beginning with tens of GeV.

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Section: Brightness and Yield Of Radiationsupporting

confidence: 86%