ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
We have measured fluorescence lifetimes of individual rovibronic levels in SiH2 (A˜ 1B1, 020). The lifetimes vary widely from one level to the next, ranging from (approximately-less-than)10 ns to 〉1 μs. Similar behavior is seen in the (000), (010), and (030) levels. This behavior is interpreted in terms of coupling of the A˜ 1B1 rovibronic levels with background levels in the X˜ 1A1 (S0) and a˜ 3B1 (T1) states, and thence via predissociation to Si(3P)+H2. The irregular variation in the lifetimes reflects the quasirandom spacings of S0 and T1 levels in the vicinity of any particular A˜ state level.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.452475
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