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Calibration of a liquid xenon detector with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Kr</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>83</mml:mn></mml:mrow></mml:mmultiscripts><mml:mrow><mml:msup><mml:mi /><mml:mrow><mml:mi>m</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>
We report the preparation of a $^{83}\mathrm{Kr}{}^{m}$ source and its use in calibrating a liquid xenon detector. $^{83}\mathrm{Kr}{}^{m}$ atoms were produced through the decay of $^{83}\mathrm{Rb}$ and introduced into liquid xenon. Decaying $^{83}\mathrm{Kr}{}^{m}$ nuclei were detected through liquid xenon scintillation. Conversion electrons with energies of 9.4 and 32.1 keV from …