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 journalArticle

    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

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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.}",
    year = "2016",
    month = "1",
    day = "1",
    doi = "10.1016/j.physleta.2016.05.037",
    language = "English",
    volume = "380",
    pages = "2386--2389",
    journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",
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    TY - JOUR

    T1 - Mixed optical Cherenkov-Bremsstrahlung radiation in vicinity of the Cherenkov cone from relativistic heavy ions

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

    AU - Rozhkova, Elena Ivanovna

    AU - Pivovarov, Yu L.

    PY - 2016/1/1

    Y1 - 2016/1/1

    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.

    KW - Angular distribution

    KW - Combined effect

    KW - Optical Cherenkov and Bremsstrahlung radiation

    KW - Relativistic heavy ion

    KW - Slowing-down

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