Bremsstrahlung on noble gases at low energies

Recent discovery of neutral bremsstrahlung (NBrS) mechanism of electroluminescence (EL) in noble gases in two-phase detectors for dark matter searches has led to a prediction that NBrS EL should be present in noble liquids as well. A rigorous theory of NBrS EL in noble liquids was developed accordingly in the framework of Cohen–Leckner and Atrazhev formalism. It has been recently followed by the first experimental observation of NBrS EL in liquid argon, which however deviates significantly from the previous theory. Given these results, we revise previous theoretical calculations of EL NBrS in noble liquids to be consistent with experiment. In particular, NBrS EL yield and spectra were calculated in this work for argon, krypton and xenon with momentum-transfer cross section of electron scattering (instead of energy-transfer one) being used for calculation of NBrS cross section. The results for light noble liquids, helium and neon, are also reexamined.

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Bremsstrahlung on noble gases at low energies

Cited by 6 publications

References 21 publications

Angular distribution of photons emitted in collision of low-energy electrons with noble gases

Angular distribution of photons emitted in collision of low-energy electrons with noble gases

First Observation of Neutral Bremsstrahlung Electroluminescence in Liquid Argon

Neutral Bremsstrahlung Electroluminescence in Noble Liquids Revisited

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