Angular distributions of relativistic electrons under channeling in half-wavelength crystal and corresponding radiation

Takabayashi, Y.; Багров, В. Г.; Bogdanov, O.V.; Pivovarov, Yury Leonidovich; Tukhfatullin, T.A.

doi:10.1016/j.nimb.2015.02.007

Cited by 12 publications

(2 citation statements)

References 16 publications

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“…The numerical solution of the equations of motion (2) was performed using a computer code BCM-2.0 [9,10]. Simulations of trajectories take into account angular divergence of the beam (for each entry point, several incident angles θ are generated) and allow calculating the flux density of the D beam inside the crystal.…”

Section: Simulation Of D Trajectories At Channelingmentioning

confidence: 99%

Orientation effect in the neutron yield in deuterated Pd target bombarded by deuterium ion beam

Dalkarov

Negodaev

Rusetskiĭ

et al. 2019

Phys. Rev. Accel. Beams

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At the ion accelerator HELIS at the LPI, the neutron yield is investigated from a deuteron-deuteron (DD) reaction in a deuterated Pd target, during an irradiation of its surface by a 20 keV deuterium (D) ion beam. The measurements of the neutron flux in the D beam direction are performed in dependence on the target angle β with respect to the D beam axis using a multichannel detector based on He 3 counters. A significant anisotropy in the neutron yield is observed, and it was higher by a factor of 2 at β ¼ 0 compared to that at β ¼ AE30°. The possible reasons for the anisotropy, including D ion channeling, are discussed. The orientation effect of increasing the relative probability of the DD reaction in Pd due to channeling was investigated by computer simulations using the BCM-2.0 code. The numerically obtained 20 keV D trajectories allow calculating the flux density of channeled D in dependence on the penetration depth and angle of incidence. The enhanced D flux density between crystal planes at a zero incident angle with respect to (200) Pd planes allows a qualitative explanation of the increase of the neutron yield in the DD reaction.

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Section: Simulation Of D Trajectories At Channelingmentioning

confidence: 99%

Orientation effect in the neutron yield in deuterated Pd target bombarded by deuterium ion beam

Dalkarov

Negodaev

Rusetskiĭ

et al. 2019

Phys. Rev. Accel. Beams

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show abstract

“…The trajectories of electrons and positrons in a crystal plate of thickness equal to half of the particle trajectory period at planar channeling are investigated by numerical methods in [12]. Experimental study of the passage of electrons through such a half-wave plate is described in paper [13]. The radiation emitted in a single half-wave plate was studied numerically and it was shown that the basic properties of radiation are similar to those of radiation from the arc of a circle [14,15].…”

Section: Introductionmentioning

confidence: 99%

Radiation of fast positrons interacting with periodic microstructure on the surface of a crystal

Epp

Janz

Kaplin

2016

Nuclear Instruments and Methods in Physics Research Section B:

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Radiation of charged particles passing through a set of equidistant ridges on the surface of a single crystal is calculated. The ridges are rectangular in shape, each of thickness of half of the particle trajectory period at planar channeling in a thick crystal. Positively charged particle entering the first ridge with angle smaller than the critical channeling angle is captured into channeling and changes the direction of its transversal velocity to reversed. Between the halfwave ridges the particle moves along a straight line. Passing through such set of half-wave crystal plates the particle moves on quasi-undulator trajectories. Properties of the particle radiation emitted during their passage through such "multicrystal undulator" are calculated. The radiation spectrum in each direction is discrete, and the frequency of the first harmonic and the number of harmonics in the spectrum depends on the distance between the plates, on energy of the particles and on the averaged potential energy of atomic planes of the crystal. The radiation is bound to a narrow cone in the direction of the average particle velocity and polarized essentially in a plane orthogonal to the atomic planes of the crystal.

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Half-wavelength-crystal channeling of relativistic ions and its possible application for a beam deflection

Bogdanov,

Tukhfatullin

2024

Nuclear Instruments and Methods in Physics Research Section A:

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Angular distributions of relativistic electrons under channeling in half-wavelength crystal and corresponding radiation

Cited by 12 publications

References 16 publications

Orientation effect in the neutron yield in deuterated Pd target bombarded by deuterium ion beam

Orientation effect in the neutron yield in deuterated Pd target bombarded by deuterium ion beam

Radiation of fast positrons interacting with periodic microstructure on the surface of a crystal

Half-wavelength-crystal channeling of relativistic ions and its possible application for a beam deflection

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