83mKr and 22Na have been used in calibrating a liquid argon (LAr) detector.83mKr atoms are produced through the decay of 83Rb and introduced into the LAr detector through the circulating purification system. The light yield reaches 7.26±0.02 photonelectrons/keV for 41.5keV from 83mKr and 7.66±0.01 photonelectrons/keV for the 511keV from 22Na, as a comparison. The light yield varies with the drift electric field from 50 to 200V/cm have been also reported. After stopping fill, the decay rate of 83mKr with a fitted half-life of 1.83±0.11 h, which is consistent with the reported value of 1.83±0.02 h.
@article{arxiv.1909.02207,
title = {Calibration of liquid argon detector with $^{83m}Kr$ and $^{22}Na$ in different drift field},
author = {Weixing Xiong and Mengyun Guan and Changgen Yang and Peng Zhang and Jinchang Liu and Cong Guo and Yuting wei and Youyu Gan and Qin Zhao and Jiajun Li},
journal= {arXiv preprint arXiv:1909.02207},
year = {2019}
}