Zobrazeno 1 - 10
of 272
pro vyhledávání: '"Purtschert, R"'
Autor:
Purtschert, R., Love, A.J., Jiang, W., Lu, Z.-T., Yang, G.-M., Fulton, S., Wohling, D., Shand, P., Aeschbach, W., Bröder, L., Müller, P., Tosaki, Y.
Publikováno v:
In Science of the Total Environment 10 February 2023 859 Part 1
Autor:
Tessler, M., Paul, M., Halfon, S., Meyer, B. S., Pardo, R., Purtschert, R., Rehm, K. E., Scott, R., Weigand, M., Weissman, L., Almaraz-Calderon, S., Avila, M. L., Baggenstos, D., Collon, P., Hazenshprung, N., Kashiv, Y., Kijel, D., Kreisel, A., Reifarth, R., Santiago-Gonzalez, D., Shor, A., Silverman, I., Talwar, R., Veltum, D., Vondrasek, R.
The $^{36}$Ar$(n,\gamma)^{37}$Ar ($t_{1/2}$ = 35 d) and $^{38}$Ar$(n,\gamma)^{39}$Ar (269 y) reactions were studied for the first time with a quasi-Maxwellian ($kT \sim 47$ keV) neutron flux for Maxwellian Average Cross Section (MACS) measurements at
Externí odkaz:
http://arxiv.org/abs/1808.08556
Publikováno v:
In Journal of Environmental Radioactivity October 2022 251-252
We report a methodology for measuring 85Kr/Kr isotopic abundances using Atom Trap Trace Analysis (ATTA) that increases sample measurement throughput by over an order of magnitude to 6 samples per 24 hours. The noble gas isotope 85Kr (half-life = 10.7
Externí odkaz:
http://arxiv.org/abs/1702.06077
Autor:
Zappala, J. C., Bailey, K., Jiang, W., Micklich, B., Mueller, P., O'Connor, T. P., Purtschert, R.
We place a 2.5% limit on the anthropogenic contribution to the modern abundance of 81Kr/Kr in the atmosphere at the 90% confidence level. Due to its simple production and transport in the terrestrial environment, 81Kr (halflife = 230,000 yr) is an id
Externí odkaz:
http://arxiv.org/abs/1702.01652
Autor:
Purtschert, R., Yokochi, R., Jiang, W., Lu, Z.-T., Mueller, P., Zappala, J., Van Heerden, E., Cason, E., Lau, M., Kieft, T.L., Gerber, C., Brennwald, M.S., Onstott, T.C.
Publikováno v:
In Geochimica et Cosmochimica Acta 15 February 2021 295:65-79
Autor:
Kastlander, J., Aldener, M., Axelsson, A., Fritioff, T., Söderström, C., Ringbom, A., Purtschert, R.
Publikováno v:
In Journal of Environmental Radioactivity January 2021 226
Autor:
Lu, Z. -T., Schlosser, P., Smethie Jr., W. M., Sturchio, N. C., Fischer, T. P., Kennedy, B. M., Purtschert, R., Severinghaus, J. P., Solomon, D. K., Tanhua, T., Yokochi, R.
The noble gas radionuclides, including 81Kr (half-life = 229,000 yr), 85Kr (11 yr), and 39Ar (269 yr), possess nearly ideal chemical and physical properties for studies of earth and environmental processes. Recent advances in Atom Trap Trace Analysis
Externí odkaz:
http://arxiv.org/abs/1305.4608
Publikováno v:
In Journal of Environmental Radioactivity February 2019 197:62-66
Autor:
Jiang, W., Williams, W. D., Bailey, K., Davis, A. M., Hu, S. -M., Lu, Z. -T., O'Connor, T. P., Purtschert, R., Sturchio, N. C., Sun, Y. R., Mueller, P.
Publikováno v:
Phys. Rev. Lett. 106:103001,2011
Atom Trap Trace Analysis (ATTA), a laser-based atom counting method, has been applied to analyze atmospheric Ar-39 (half-life = 269 yr), a cosmogenic isotope with an isotopic abundance of 8x10^-16. In addition to the superior selectivity demonstrated
Externí odkaz:
http://arxiv.org/abs/1101.2933