Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1981-05-14
1983-10-04
Williams, Howard S.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
B01J 1908, B01J 1912, B01J 1926
Patent
active
044077050
ABSTRACT:
A process for generating negative ions of hydrogen isotopes is described which comprises cooling the hydrogen gas below 300.degree. K., and preferably to about 200.degree. K., vibrationally exciting the molecules of the gas, and the dissociating the molecules by electron impact into neutral hydrogen atoms and negative hydrogen ions. Alternatively, the gas may first be vibrationally excited by heating or the like, and then cooled translationally, for example, by rapid expansion prior to dissociation by electron impact. The processes of this invention are characterized by control of non-equilibrium conditions to obtain large increases in dissociative attachment rates by increasing the population of hydrogen gas molecules having a higher vibrational energy state.
REFERENCES:
patent: 4092405 (1978-05-01), von Rosenberg et al.
patent: 4110182 (1978-08-01), Stevens
patent: 4176025 (1979-11-01), Chen et al.
patent: 4220510 (1980-09-01), Brueck et al.
Bailey William F.
Duke Gary L.
Garscadden Alan
Scearce Bobby D.
Singer Donald J.
The United States of America as represented by the Secretary of
Williams Howard S.
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