Northwest Foundation of Washington: 

Atom Traps, Krypton-81 and Saharan Water
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UW Public Events on 11 May, 2008 11:00:00
 
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