Detection of atomic hydrogen and deuterium by resonant three-photon ionization
- 1 July 1978
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 33 (1), 54-56
- https://doi.org/10.1063/1.90163
Abstract
Resonantly enhanced three‐photon ionization spectroscopy is employed for the detection of ground‐state atomic hydrogen and deuterium. Concentrations as low as 4×109 atoms/cm3 in the presence of 1017 atoms/cm3 of buffer gas are detected with an implicit time resolution of less than 10 nsec. A useful dynamic range of at least 4×104 is demonstrated and saturation of the ionization in a 2×10−4‐cm3 focal volume is observed. The presence of H can easily be distinguished from that of D and the three‐dimensional spatial distribution of H or D can be determined.Keywords
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