Ultrasensitive isotope trace analyses with a magneto-optical trap

被引：176

作者：

Chen, CY

Li, YM

Bailey, K

O'Connor, TP

Young, L

Lu, ZT

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

来源：

SCIENCE | 1999年 / 286卷 / 5442期

关键词：

D O I：

10.1126/science.286.5442.1139

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Laser manipulation of neutral atoms has been used to count individual krypton-85 and krypton-81 atoms present in a natural krypton gas sample with isotopic abundances in the range of 10(-11) and 10(-13), respectively. This method of isotope trace analysis is free of contamination from other isotopes and elements and can be applied to several different isotope tracers for a wide range of applications. The demonstrated detection efficiency is 1 x 10(-7). System improvements could increase the efficiency by many orders of magnitude.

引用

页码：1139 / 1141

页数：3

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