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  • Cosmogenic production of Ar...
    Aalbers, J.; Akerib, D.  S.; Alder, F.; Ames, A.; Anderson, T.  J.; Angelides, N.; Araújo, H.  M.; Armstrong, J.  E.; Baker, A.; Bang, J.; Bargemann, J.  W.; Baxter, A.; Bhatti, A.; Biekert, A.; Biesiadzinski, T.  P.; Brás, P.; Busenitz, J.  K.; Buuck, M.; Cascella, M.; Chan, C.; Chawla, A.; Cole, A.; Cottle, A.; Cox, G.; Creaner, O.; Dahl, C.  E.; Dobson, J.  E. Y.; Druszkiewicz, E.; Eriksen, S.  R.; Fan, A.; Fayer, S.; Fraser, E.  D.; Fruth, T.; Genovesi, J.; Gibson, E.; Gilchriese, M.  G. D.; van der Grinten, M.  G. D.; Hall, C.  R.; Hertel, S.  A.; Ignarra, C.  M.; Johnson, J.; Khaitan, D.; Korolkova, E.  V.; Kudryavtsev, V.  A.; Leason, E.  A.; Lesko, K.  T.; Levy, C.; Linehan, R.; Lippincott, W.  H.; Lopes, M.  I.; Lopez Asamar, E.; Lopez-Paredes, B.; Majewski, P.  A.; McKinsey, D.  N.; Mizrachi, E.; Morad, J.  A.; Morales Mendoza, J.  D.; Murphy, A. J.; Nedlik, C.; Nelson, H.  N.; Neves, F.; Nikoleyczik, J.  A.; Olcina, I.; Palladino, K.  J.; Parveen, N.; Pease, E.  K.; Penning, B.; Pereira, G.; Piepke, A.; Porzio, D.; Qie, Y.; Rischbieter, G.  R. C.; Rosero, R.; Rushton, T.; Santone, D.; Schnee, R.  W.; Solovov, V.  N.; Sorensen, P.; Stifter, K.; Suerfu, B.; Szydagis, M.; Taylor, R.; Temples, D.  J.; Terman, P.  A.; Tiedt, D.  R.; Timalsina, M.; Tong, Z.; Tovey, D.  R.; Tronstad, D.  R.; Turner, W.; Utku, U.; Wang, J.  J.; Wang, W.; Watson, J.  R.; Webb, R.  C.; White, R.  G.; Wolfs, F.  L. H.; Xia, Q.; Xu, J.; Yeh, M.

    Physical review. D, 04/2022, Letnik: 105, Številka: 8
    Journal Article

    We estimate the amount of Ar37 produced in natural xenon via cosmic-ray-induced spallation, an inevitable consequence of the transportation and storage of xenon on the Earth’s surface. We then calculate the resulting Ar37 concentration in a 10-tonne payload (similar to that of the LUX-ZEPLIN experiment) assuming a representative schedule of xenon purification, storage, and delivery to the underground facility. Using the spallation model by Silberberg and Tsao, the sea-level production rate of Ar37 in natural xenon is estimated to be 0.024 atoms/kg/day. Assuming the xenon is successively purified to remove radioactive contaminants in 1-tonne batches at a rate of 1 tonne/month, the average Ar37 activity after 10 tons are purified and transported underground is 0.058-0.090 μBq/kg, depending on the degree of argon removal during above-ground purification. Such cosmogenic Ar37 will appear as a noticeable background in the early science data, while decaying with a 35-day half-life. This newly noticed production mechanism of Ar37 should be considered when planning for future liquid-xenon-based experiments.