Atom Traps, Krypton-81 and Saharan Water

Seminars  |  Mon, May 12, 2008 4:00 PM, Speaker: Zheng-Tian Lu  Argonne National Laboratory   A new method, named Atom Trap Trace Analysis (ATTA), was developed by Lu's group and used to analyze 81Kr (t1/2 = 2.3x105 years, isotopic abundance ~ 1x10?12) in environmental samples. As the first real-world application of ATTA, they have determined the mean residence time of the old groundwater in the Nubian Aquifer located underneath the Sahara Desert. Sponsor info.: Physics Department Location: Physics/Ronald Geballe Auditorium, PAA, Rm. A-102, Cost: Free

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