Counting individual 41Ca atoms with a magneto-optical trap
arXiv:physics/0310045 · doi:10.1103/PhysRevLett.92.153002
Abstract
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.
References in corpus (1)
Cited by in corpus (5)
- Atomic source selection in space-borne gravitational wave detection
- Loading of a surface-electrode ion trap from a remote, precooled source
- Prospects in Analytical Atomic Spectrometry
- Single atom detection of calcium isotopes by atom trap trace analysis
- Radioactive Krypton Background Evaluation Using Atom Counting