Counting individual 41Ca atoms with a magneto-optical trap

6533b7ddfe1ef96bd1274b52

RESEARCH PRODUCT

Counting individual 41Ca atoms with a magneto-optical trap

I. D. Moore K. Bailey J. Greene Z. -T. Lu P. Mueller T. P. O'connor Ch. Geppert K. D. A. Wendt L. Young

subject

Atomic Physics (physics.atom-ph)Biological Physics (physics.bio-ph)FOS: Physical sciences Physics - Biological Physics Physics - Atomic Physics

description

Atom Trap Trace Analysis (ATTA), a novel method based upon laser trapping and cooling, is used to count individual atoms of 41Ca present in biomedical samples with isotopic abundance levels between 10^-8 and 10^-10. ATTA is calibrated against Resonance Ionization Mass Spectrometry, demonstrating a good agreement between the two methods. The present ATTA system has a counting efficiency of 2x10^-7. Within one hour of observation time, its 3-sigma detection limit on the isotopic abundance of 41Ca reaches 4.5x10^-10.

year	journal	country	edition	language
2003-10-09

https://dx.doi.org/10.48550/arxiv.physics/0310045

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