${}^{83}\mathrm{Rb}$/${}^{83m}\mathrm{Kr}$ production and cross-section measurement with 3.4 MeV and 20 MeV proton beams

Abstract

${}^{83m}\mathrm{Kr}$, with a short lifetime, is an ideal calibration source for liquid xenon or liquid argon detectors. The ${}^{83m}\mathrm{Kr}$ isomer can be generated through the decay of ${}^{83}\mathrm{Rb}$ isotope which is usually produced by proton beams bombarding natural krypton atoms. In this paper, we report a successful production of ${}^{83}\mathrm{Rb}{/}^{83m}\mathrm{Kr}$ with a proton beam energy of 3.4 MeV, and the first measurement of the production rate with such low energy proton beams. Another production attempt is performed using the newly available 20 MeV proton beam in China, and the measured production rate is consistent with previous measurements. The produced ${}^{83m}\mathrm{Kr}$ source has been successfully injected into the PandaX-II liquid xenon detector, yielding enough statistics for detector calibration.

9 pages, 8 figures, version published on PRC

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• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• Results of Dark Matter Search using the Full PandaX-II Exposure
• ${}^{83\text{m}}$Kr calibration of the 2013 LUX dark matter search
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• Horizontal Position Reconstruction in PandaX-II
• Search for Solar Boosted Dark Matter Particles at the PandaX-4T Experiment