UV PHOTODISSOCIATION OF UF_6 EXCITED IN THE B- BAND
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Graphical Abstract
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Abstract
The UV photodissociation of UF6 excited in the B-X band is investigated with the 253.7 nm radiation from a filter Hg lamp. In the presence of H2, the dissociation yields are measured as a function of the incident light intensity, the partial pressure of hydrogen and various gas additives (Ar, N2 and SF6). The apparent quantum yield of 1.8±0.1 is observed for UF6-H2 system and of near unity for UF6-CO system. The UV photodissociation machanism of UF6 excited in the B-X band is discussed.
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