Angular distribution of cherenkov radiation from relativistic heavy ions taking into account deceleration in the radiator

O. V. Bogdanov, E. I. Fiks, Yu L. Pivovarov

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Numerical methods are used to study the dependence of the structure and the width of the angular distribution of Vavilov-Cherenkov radiation with a fixed wavelength in the vicinity of the Cherenkov cone on the radiator parameters (thickness and refractive index), as well as on the parameters of the relativistic heavy ion beam (charge and initial energy). The deceleration of relativistic heavy ions in the radiator, which decreases the velocity of ions, modifies the condition of structural interference of the waves emitted from various segments of the trajectory; as a result, a complex distribution of Vavilov-Cherenkov radiation appears. The main quantity is the stopping power of a thin layer of the radiator (average loss of the ion energy), which is calculated by the Bethe-Bloch formula and using the SRIM code package. A simple formula is obtained to estimate the angular distribution width of Cherenkov radiation (with a fixed wavelength) from relativistic heavy ions taking into account the deceleration in the radiator. The measurement of this width can provide direct information on the charge of the ion that passes through the radiator, which extends the potentialities of Cherenkov detectors. The isotopic effect (dependence of the angular distribution of Vavilov-Cherenkov radiation on the ion mass) is also considered.

Original languageEnglish
Pages (from-to)392-401
Number of pages10
JournalJournal of Experimental and Theoretical Physics
Volume115
Issue number3
DOIs
Publication statusPublished - 1 Sep 2012

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radiators
deceleration
heavy ions
angular distribution
radiation
ions
stopping power
wavelengths
cones
ion beams
trajectories
refractivity
interference
energy
detectors
estimates

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Angular distribution of cherenkov radiation from relativistic heavy ions taking into account deceleration in the radiator. / Bogdanov, O. V.; Fiks, E. I.; Pivovarov, Yu L.

In: Journal of Experimental and Theoretical Physics, Vol. 115, No. 3, 01.09.2012, p. 392-401.

Research output: Contribution to journalArticle

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