Spin-relaxation effects on the EPR spectrum of gaseous hydrogen atoms
- 1 March 1972
- journal article
- Published by National Institute of Standards and Technology (NIST) in Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
- Vol. 76A (2) , 103-113
- https://doi.org/10.6028/jres.076a.011
Abstract
A theoretical analysis is presented of the relaxation processes which lead to the magnetization of gaseous hydrogen atoms in a strong magnetic field. Experiments are described which demonstrate that the spin-lattice relaxation time in a pure H2 carrier can be of the order of 10 ms. From the effects of traces of O2 on the hydrogen atom EPR spectrum, a H-O2 spin-exchange collision cross section of (8.0 ± 2.5) × 10-16 cm2 was derived.Keywords
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