High Resolution Spectroscopy of Neutral Yb Atoms in a Solid Ne Matrix

Autor: Lambo, R., Xu, C. -Y., Pratt, S. T., Xu, H., Zappala, J. C., Bailey, K. G., Lu, Z. -T., Mueller, P., O'Connor, T. P., Kamorzin, B. B., Bezrukov, D. S., Xie, Y., Buchachenko, A. A., Singh, J. T.

We present an experimental and theoretical study of the absorption and emission spectra of Yb atoms in a solid Ne matrix at a resolution of 0.025 nm. Five absorption bands were identified as due to transitions from the $4f^{14}5d^06s^2\ ^1\!S_0$ grou

Externí odkaz: http://arxiv.org/abs/2107.04186

Setting a Limit on Anthropogenic Sources of Atmospheric 81Kr through Atom Trap Trace Analysis

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

Atmospheric 81Kr as an integrator of cosmic-ray flux on the hundred-thousand-year timescale

Autor: Zappala, J. C., Baggenstos, D., Gerber, C., Jiang, W., Kennedy, B. M., Lu, Z.-T., Masarik, J., Mueller, P., Purtschert, R., Visser, A.

The atmospheric abundance of 81Kr is a global integrator of cosmic rays. It is insensitive to climate shifts, geographical variations, and short-term solar cycle activity, making it an ideal standard to test models of cosmic-ray flux on the time scal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6533a2f5acb8378d240669c58aa74421

Rapid processing of ⁸⁵5 Kr/Kr ratios using Atom Trap Trace Analysis

Autor: Zappala, J. C., Bailey, K., Mueller, P., O'Connor, T. P., Purtschert, Roland

Publikováno v: Zappala, J. C.; Bailey, K.; Mueller, P.; O'Connor, T. P.; Purtschert, Roland (2017). Rapid processing of ⁸⁵5 Kr/Kr ratios using Atom Trap Trace Analysis. Water resources research, 53(3), pp. 2553-2558. American Geophysical Union 10.1002/2016WR020082

We report a methodology for measuring ⁸⁵ Kr/Kr isotopic abundances using Atom Trap Trace Analysis (ATTA) that increases sample measurement throughput by over an order of magnitude to six samples per 24 h. The noble gas isotope ⁸⁵ Kr (half-lif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::673a562a7353c15d8cf5ca25b2672fc6

Transport of salt and freshwater in the Atlantic Subpolar Gyre

Autor: Gerber C., Vaikmäe R., Aeschbach W., Babre A., Jiang W., Leuenberger M., Lu Z.-T., Mokrik R., Müller P., Raidla V., Saks T., Waber H. N., Weissbach T., Zappala J. C., Purtschert R.

Publikováno v: Geochimica et Cosmochimica Acta
Born, Andreas; Stocker, Thomas; Sandø, Anne Britt (2016). Transport of salt and freshwater in the Atlantic Subpolar Gyre. Ocean Dynamics, 66(9), pp. 1051-1064. Springer 10.1007/s10236-016-0970-y

Transport of salt in the Irminger Current, the northern branch of the Atlantic Subpolar Gyre coupling the eastern and western subpolar North Atlantic, plays an important role for climate variability across a wide range of time scales. High-resolution

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd632d0ee20635eab68fc0da3034af54