Effect of channeling on positron backscattering from crystals

Vorob'ev, A. A.; Didenko, A. N.; Vorob'ev, S. A.; Tsekhanovskii, I. A.

doi:10.1002/pssa.2210060204

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Solution Of the System Of Differential Equations1

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1972

1981

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Cited by 9 publications

(2 citation statements)

References 4 publications

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“…Substituting this expression into (8) and averaging over the oscillation period we find an equation for y(z), where yo = y(0) and A, is the initial amplitude. Equation (10) has the following solution :…”

Section: Solution Of the System Of Differential Equationsmentioning

confidence: 99%

Theory of Planar Channelling of Relativistic Positrons

Zimin

Wedell

Greschner³

1981

Physica Status Solidi (b)

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Section: Solution Of the System Of Differential Equationsmentioning

confidence: 99%

Theory of Planar Channelling of Relativistic Positrons

Zimin

Wedell

Greschner³

1981

Physica Status Solidi (b)

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“…

In a previous paper the effect of channeling on positron backscattering from alkali halide single crystals was found (1). The channeling phenomena resulted in a significant decrease of the yield of positron backscattering if the initial positron beam coincides with the <loo> crystallographic axis of the target.

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confidence: 96%

Effect of channeling on positron annihilation in single crystals

Vorob'ev¹,

Tsekhanovskii²

1972

Phys. Stat. Sol. (a)

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Simulation of Positron Channeling in Single Crystals

Kudrin¹,

Timoshnikov²,

Vorob'ev³

1973

Physica Status Solidi (b)

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A simulation method of charged particle scattering in a crystal lattice is described. Angular distributions of protons and positrons leaving the crystal are calculated and the orientational distributions of axial channeling particles are received. The influence of the experimental geometry and the crystal condition on the obtained results is discussed. It is shown that binary collision calculation gives agreement with experimental results. I n the present paper the first results of a computer simulation of the scattering of positrons in a single crystal are given. Since the applicability of the classical mechanics to the description of the channeling phenomena of light p-particles is under discussion, we choose a computer model allowing for the most exact simulation of the experimental conditions, without the usually applied methods of computing time minimization. I n our calculation the particle trajectory is observed from the first collision point until the particle leaves the certain geometrical dimension of the single crystal. The calculation thus yields the angular distributions of the particles leaving the single crystal in dependence on the rotation angle of the single crystal relative to the incident beam axis. The angular distributions are integrated over the detector aperture of the simulated experiment geometry and these values depending on the crystal rotation angle are compared with the experimental data.

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Effect of channeling on positron backscattering from crystals

Cited by 9 publications

References 4 publications

Theory of Planar Channelling of Relativistic Positrons

Theory of Planar Channelling of Relativistic Positrons

Effect of channeling on positron annihilation in single crystals

Simulation of Positron Channeling in Single Crystals

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