97 citations · 336 across the 11 of their papers we have counts for
11 papers
First experimental determination of the Ar()Ar reaction cross section and Ar production in Earth's atmosphere
S. Bhattacharya, M. Paul, R. N. Sahoo +28
The cosmogenic Ar(t= 268 years) isotope of argon is used for geophysical dating and tracing owing to its appropriate half-life and chemical inertness as a noble gas;…
The Low-Radioactivity Underground Argon Workshop: A workshop synopsis
Thomas Alexander, Henning O. Back, Walter Bonivento +22
In response to the growing need for low-radioactivity argon, community experts and interested parties came together for a 2-day workshop to discuss the worldwide low-radioactivity…
Stellar ArAr reactions and their effect on light neutron-rich nuclide synthesis
M. Tessler, M. Paul, S. Halfon +22
The ArAr ( = 35 d) and ArAr (269 y) reactions were studied for the first time with a quasi-Maxwellian ( keV) neutron flux…
Rapid processing of 85Kr/Kr ratios using Atom Trap Trace Analysis
J. C. Zappala, K. Bailey, P. Mueller +2
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 t…
Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale
Christoph Gerber, Rein Vaikmäe, Werner Aeschbach +12
Analyses for Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover th…
Radiometric 81Kr dating identifies 120,000 year old ice at Taylor Glacier, Antarctica
Christo Buizert, Daniel Baggenstos, Wei Jiang +8
We present the first successful 81Kr-Kr radiometric dating of ancient polar ice. Krypton was extracted from the air bubbles in four ~350 kg polar ice samples from Taylor Glacier in…
Ion Current as a Precise Measure of the Loading Rate of a Magneto-Optical Trap
Wei Jiang, Kevin Bailey, Zheng-Tian Lu +3
We have demonstrated that the ion current resulting from collisions between metastable krypton atoms in a magneto-optical trap can be used to precisely measure the trap loading rat…
Tracer Applications of Noble Gas Radionuclides in the Geosciences
Z. -T. Lu, P. Schlosser, W. M. Smethie +8
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 an…
Ar-39 Detection at the 10^-16 Isotopic Abundance Level with Atom Trap Trace Analysis
W. Jiang, W. D. Williams, K. Bailey +8
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 abund…
Discovery of underground argon with low level of radioactive 39Ar and possible applications to WIMP dark matter detectors
C. Galbiati, R. Purtschert
We report on the first measurement of 39Ar in argon from underground natural gas reservoirs. The gas stored in the US National Helium Reserve was found to contain a low level of 39…
A New Method of Measuring 81Kr and 85Kr Abundances in Environmental Samples
X. Du, R. Purtschert, K. Bailey +7
We demonstrate a new method for determining the 81Kr/Kr ratio in environmental samples based upon two measurements: the 85Kr/81Kr ratio measured by Atom Trap Trace Analysis (ATTA)…