Mixed optical Cherenkov-Bremsstrahlung radiation in vicinity of the Cherenkov cone from relativistic heavy ions: Unusual dependence of the angular distribution width on the radiator thickness

Abstract

The Cherenkov radiation (ChR) angular distribution is usually described by the Tamm-Frank (TF) theory, which assumes that relativistic charged particle moves uniformly and rectilinearly in the optically transparent radiator. According to the TF theory, the full width at half maximum (FWHM) of the ChR angular distribution inversely depends on the radiator thickness. In the case of relativistic heavy ions (RHI) a slowing-down in the radiator may sufficiently change the angular distribution of optical radiation in vicinity of the Cherenkov cone, since there appears a mixed ChR-Bremsstrahlung radiation. As a result, there occurs a drastic transformation of the FWHM of optical radiation angular distribution in dependence on the radiator thickness: from inversely proportional (TF theory) to the linearly proportional one. In our paper we present the first analysis of this transformation taking account of the gradual velocity decrease of RHI penetrating through a radiator.

Original language	English
Pages (from-to)	2386-2389
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	380
Issue number	31-32
DOIs	https://doi.org/10.1016/j.physleta.2016.05.037
Publication status	Published - 1 Jan 2016

Keywords

Angular distribution
Combined effect
Optical Cherenkov and Bremsstrahlung radiation
Relativistic heavy ion
Slowing-down

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1016/j.physleta.2016.05.037

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Rozhkova, E. I., & Pivovarov, Y. L. (2016). Mixed optical Cherenkov-Bremsstrahlung radiation in vicinity of the Cherenkov cone from relativistic heavy ions: Unusual dependence of the angular distribution width on the radiator thickness. Physics Letters, Section A: General, Atomic and Solid State Physics, 380(31-32), 2386-2389. https://doi.org/10.1016/j.physleta.2016.05.037

Mixed optical Cherenkov-Bremsstrahlung radiation in vicinity of the Cherenkov cone from relativistic heavy ions : Unusual dependence of the angular distribution width on the radiator thickness. / Rozhkova, Elena Ivanovna; Pivovarov, Yu L.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 380, No. 31-32, 01.01.2016, p. 2386-2389.

Research output: Contribution to journal › Article › peer-review

Rozhkova, EI & Pivovarov, YL 2016, 'Mixed optical Cherenkov-Bremsstrahlung radiation in vicinity of the Cherenkov cone from relativistic heavy ions: Unusual dependence of the angular distribution width on the radiator thickness', Physics Letters, Section A: General, Atomic and Solid State Physics, vol. 380, no. 31-32, pp. 2386-2389. https://doi.org/10.1016/j.physleta.2016.05.037

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title = "Mixed optical Cherenkov-Bremsstrahlung radiation in vicinity of the Cherenkov cone from relativistic heavy ions: Unusual dependence of the angular distribution width on the radiator thickness",

abstract = "The Cherenkov radiation (ChR) angular distribution is usually described by the Tamm-Frank (TF) theory, which assumes that relativistic charged particle moves uniformly and rectilinearly in the optically transparent radiator. According to the TF theory, the full width at half maximum (FWHM) of the ChR angular distribution inversely depends on the radiator thickness. In the case of relativistic heavy ions (RHI) a slowing-down in the radiator may sufficiently change the angular distribution of optical radiation in vicinity of the Cherenkov cone, since there appears a mixed ChR-Bremsstrahlung radiation. As a result, there occurs a drastic transformation of the FWHM of optical radiation angular distribution in dependence on the radiator thickness: from inversely proportional (TF theory) to the linearly proportional one. In our paper we present the first analysis of this transformation taking account of the gradual velocity decrease of RHI penetrating through a radiator.",

keywords = "Angular distribution, Combined effect, Optical Cherenkov and Bremsstrahlung radiation, Relativistic heavy ion, Slowing-down",

author = "Rozhkova, {Elena Ivanovna} and Pivovarov, {Yu L.}",

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T2 - Unusual dependence of the angular distribution width on the radiator thickness

AU - Rozhkova, Elena Ivanovna

AU - Pivovarov, Yu L.

PY - 2016/1/1

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N2 - The Cherenkov radiation (ChR) angular distribution is usually described by the Tamm-Frank (TF) theory, which assumes that relativistic charged particle moves uniformly and rectilinearly in the optically transparent radiator. According to the TF theory, the full width at half maximum (FWHM) of the ChR angular distribution inversely depends on the radiator thickness. In the case of relativistic heavy ions (RHI) a slowing-down in the radiator may sufficiently change the angular distribution of optical radiation in vicinity of the Cherenkov cone, since there appears a mixed ChR-Bremsstrahlung radiation. As a result, there occurs a drastic transformation of the FWHM of optical radiation angular distribution in dependence on the radiator thickness: from inversely proportional (TF theory) to the linearly proportional one. In our paper we present the first analysis of this transformation taking account of the gradual velocity decrease of RHI penetrating through a radiator.

AB - The Cherenkov radiation (ChR) angular distribution is usually described by the Tamm-Frank (TF) theory, which assumes that relativistic charged particle moves uniformly and rectilinearly in the optically transparent radiator. According to the TF theory, the full width at half maximum (FWHM) of the ChR angular distribution inversely depends on the radiator thickness. In the case of relativistic heavy ions (RHI) a slowing-down in the radiator may sufficiently change the angular distribution of optical radiation in vicinity of the Cherenkov cone, since there appears a mixed ChR-Bremsstrahlung radiation. As a result, there occurs a drastic transformation of the FWHM of optical radiation angular distribution in dependence on the radiator thickness: from inversely proportional (TF theory) to the linearly proportional one. In our paper we present the first analysis of this transformation taking account of the gradual velocity decrease of RHI penetrating through a radiator.

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