Abstract
Nuclear reaction analysis of hydrogen with a use of the 1H( 15N,αγ) 12C reaction was performed under a atmospheric condition. A 100 nm-thick silicon nitride membrane coated with gold of 10 nm was used for the extraction of the 15N beam into the sample chamber filled with gas molecules. Hydrogen contained in a Y film with a thickness of 80 nm was detected in N 2 of 10 5 Pa. This nuclear reaction analysis (NRA) setup was also applied to H 2 gas, and the yield curve revealed a plateau feature. The plateau level was, furthermore, found to be constant independent of the H 2 pressure. We show that this plateau intensity can be used to obtain the detection efficiency of a NRA setup.
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