Cherenkov radiation from relativistic heavy ions taking account of their slowing down in radiator

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2009-03, Vol.267 (6), p.896-900
• Main Authors: Altapova, V.R., Bogdanov, O.V., Pivovarov, Yu.L.
• Format: Article
• Language: English
• Subjects: 41.60.Bg; 61.85.+p; 78.70.−g
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2009.02.037

Combining the SRIM’06 computer code and the formula for spectral-angular distribution of radiation from a particle moving in a medium in arbitrary trajectory, we studied numerically the structure of angular distributions of Cherenkov radiation from moderately relativistic heavy ions (RHI) taking into account the decrease of the ion velocity due to stopping in the radiator. The results obtained clearly show that the width and the fine structure of the Cherenkov radiation in the vicinity of the Cherenkov cone depend strongly on several factors, e.g. the mean and total energy losses, the radiator thickness, the square of the ion charge, the emission wavelength and the refractive index of the radiator material. This might be useful for experiments using RICH detectors for relativistic heavy ions.