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Title: Towards ultrasensitive isotope trace analysis {sup 41}Ca.

An Atom Trap Trace Analysis (ATTA) system based on the technique of laser manipulation of neutral atoms is being developed to count individual {sup 41}Ca atoms present in natural samples with an isotopic abundance of 10{sup -15}. Trapping of all stable calcium isotopes has been demonstrated and single-atom counting has been realized. For the most abundant isotope, {sup 40}Ca (97% isotopic abundance), a magneto-optical trap (MOT) loading rate of 2 x 10{sup 10} atoms/s has been reached at the overall capture efficiency of 1 x 10{sup -4}. System improvements could increase the efficiency by at least an order of magnitude.
Authors:
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Publication Date:
OSTI Identifier:
795046
Report Number(s):
ANL/PHY/CP-106703
TRN: US0201279
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: (EMIS-14) 14th International Conference on Electromagnetic Isotope Separators and Techniques Related to Their Applications, Victoria, British Columbia (CA), 05/06/2002--05/10/2002; Other Information: PBD: 6 May 2002
Research Org:
Argonne National Lab., IL (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; CALCIUM 41; ISOTOPE RATIO; CALCIUM 40; ENVIRONMENTAL MATERIALS; ELECTROMAGNETIC ISOTOPE SEPARATORS