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Deuterium isotope separation by tunable-laser predissociation of formaldehyde

โœ Scribed by L. Mannik; G.M. Keyser; K.B. Woodall

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
232 KB
Volume
65
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

A tunable ultraviolet Iascr has been used to imestigate the deuterium enrichment resulting from the phoropredissociation of formaldehyde. An enrichment factor of 2.54 + 30 has been measured at 345.6 nm starting from a 4Torr sample of natural formaldehydf. ? _ introduction Formaldehyde wx one of the first molecuies for which laser isotope separation was successfully demonstrated El]_ Absorption of an ultraviolet photon in the range 330 to 355 nm Ieads by predissociation to the break-up of the H,CO into stable molecular products_ H2 and CO. At waveIengths below 330 nm radical dissociation into H and HCO can lead to a loss of isotopic selectivity by the process of isotopic scrambling [2] _ Isotopes of oxygen 121, carbon [3,3] and hydrogen [2] have been separated by UV ldser irradiation of formaldehyde at appropriate wakelengths-The earlier work in this field is summarized in ref_ [2] and the

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