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

Elena Ivanovna Rozhkova, Yu L. Pivovarov

    Research output: Contribution to journal › Article

    2 Citations (Scopus)

    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 languageEnglish
    Pages (from-to)2386-2389
    Number of pages4
    JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
    Volume380
    Issue number31-32
    DOIs
    Publication statusPublished - 1 Jan 2016

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    radiators
    bremsstrahlung
    heavy ions
    cones
    angular distribution
    radiation
    relativistic particles
    charged particles

    Keywords

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

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    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

    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
    Rozhkova EI, Pivovarov YL. 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. 2016 Jan 1;380(31-32):2386-2389. https://doi.org/10.1016/j.physleta.2016.05.037
    Rozhkova, Elena Ivanovna ; Pivovarov, Yu L. / 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. In: Physics Letters, Section A: General, Atomic and Solid State Physics. 2016 ; Vol. 380, No. 31-32. pp. 2386-2389.
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    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",
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    AU - Pivovarov, Yu L.

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    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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