The main purpose of this work is to provide reference data on X-ray ionization yields and energy spectra in liquid Ar to the studies in the field of Cryogenic Avalanche Detectors (CRADs) for rare-event and other experiments, based on liquid Ar detectors. We present the results of two related researches. First, the X-ray recombination coefficients in the energy range of 10-1000 keV and ionization yields at different electric fields, between 0.6 and 2.3 kV/cm, are determined in liquid Ar based on the results of a dedicated experiment. Second, the energy spectra of pulsed X-rays in liquid Ar in the energy range of 15-40 keV, obtained in given experiments including that with the two-phase CRAD, are interpreted and compared to those calculated using a computer program, to correctly determine the absorbed X-ray energy. The X-ray recombination coefficients and ionization yields have for the first time been presented for liquid Ar in systematic way.
@article{arxiv.1505.02296,
title = {X-ray ionization yields and energy spectra in liquid argon},
author = {A. Bondar and A. Buzulutskov and A. Dolgov and L. Shekhtman and A. Sokolov},
journal= {arXiv preprint arXiv:1505.02296},
year = {2016}
}
Comments
13 pages, 9 figures, 3 tables. Submitted to NIM. 2nd version: substantially modified. New Fig. 7: summary of ionization yields in liquid Ar