Abstract
The conditions of channeling of relativistic positively charged particles near the surface of a crystal in the presence of a magnetic field parallel to the surface are studied. It is shown that the emission spectrum of a single particle is discrete. The frequency of the first harmonic and the number of harmonics, making a significant contribution to the spectrum depend strongly on the initial coordinates and velocities of the particles. When averaged over the initial coordinate of the particle, the spectrum becomes continuous. The spectral range in which the radiation of parallel beam of particles is generated, does not depend on the magnetic field and is determined only by the energy of the particles and the averaged potential of the surface atomic layer. Radiation is concentrated in a narrow cone in the direction of the average velocity of the particles and polarized essentially in the plane orthogonal to the crystal surface.
| Original language | English |
|---|---|
| Pages (from-to) | 19-24 |
| Number of pages | 6 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 362 |
| DOIs | |
| Publication status | Published - 1 Nov 2015 |
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Keywords
- Channeling
- Charged particle
- Crystal
- Polarization
- Spectrum
ASJC Scopus subject areas
- Instrumentation
- Nuclear and High Energy Physics
Cite this
Channeling of fast positrons on a crystal surface in a uniform magnetic field. / Epp, V.; Kaplin, V.; Vlasova, L.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 362, 01.11.2015, p. 19-24.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Channeling of fast positrons on a crystal surface in a uniform magnetic field
AU - Epp, V.
AU - Kaplin, V.
AU - Vlasova, L.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - The conditions of channeling of relativistic positively charged particles near the surface of a crystal in the presence of a magnetic field parallel to the surface are studied. It is shown that the emission spectrum of a single particle is discrete. The frequency of the first harmonic and the number of harmonics, making a significant contribution to the spectrum depend strongly on the initial coordinates and velocities of the particles. When averaged over the initial coordinate of the particle, the spectrum becomes continuous. The spectral range in which the radiation of parallel beam of particles is generated, does not depend on the magnetic field and is determined only by the energy of the particles and the averaged potential of the surface atomic layer. Radiation is concentrated in a narrow cone in the direction of the average velocity of the particles and polarized essentially in the plane orthogonal to the crystal surface.
AB - The conditions of channeling of relativistic positively charged particles near the surface of a crystal in the presence of a magnetic field parallel to the surface are studied. It is shown that the emission spectrum of a single particle is discrete. The frequency of the first harmonic and the number of harmonics, making a significant contribution to the spectrum depend strongly on the initial coordinates and velocities of the particles. When averaged over the initial coordinate of the particle, the spectrum becomes continuous. The spectral range in which the radiation of parallel beam of particles is generated, does not depend on the magnetic field and is determined only by the energy of the particles and the averaged potential of the surface atomic layer. Radiation is concentrated in a narrow cone in the direction of the average velocity of the particles and polarized essentially in the plane orthogonal to the crystal surface.
KW - Channeling
KW - Charged particle
KW - Crystal
KW - Polarization
KW - Spectrum
UR - http://www.scopus.com/inward/record.url?scp=84941313407&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84941313407&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2015.08.077
DO - 10.1016/j.nimb.2015.08.077
M3 - Article
AN - SCOPUS:84941313407
VL - 362
SP - 19
EP - 24
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
ER -