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Electronic quenching of IF B3Π(0+) by I2

✍ Scribed by Michael R. Berman; Philip D. Whitefield

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
456 KB
Volume
122
Category
Article
ISSN
0009-2614

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✦ Synopsis

Rare consnmrs for the electronic quenching of IF B3fl(O+ ) LI's-' 3-6 by 12were measured IO be k, = (3.5~O.Z)~10-'~ cm3 al 300 K using Lime-resolved laser-induced fluorerccncc. Fluorescence spcc~ra were also obtained and possible quenching mrchanisms are discussed on the basis of these results.

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Chemical generation of excited IF(B3Π0+)
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The interhalogen IF was excited to its B 'II 0+ state by collisions with chemically produced N,( A 'Z: ) metastables. The excited nitrogen metastables were generated by the reaction of N(%) atoms with Ns radicals. The reaction system was operated both as a continuous flame in a discharge-flow system

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AbStTWt A picosecond time-resolved study of the interaction of Br with Is is presented. The bromine atom is formed by photodissociation of the HBr in the van der Waals dimer HBrIs at 220 nm. The resultant molecular products are detected by picosecond REMPI. We see primarily vibrationally excited 1s

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IF molecules were prepa.red in a miaowave disckuge by using C3FpI Cheptafluoro-2-iodopropane) or by the direct reaction X2 + F2 \_ The hyperfine structure of the rotational transitions f + 1 -f = 54 of the nirational level u' = 3 and 6 -5 of U' = 4 in the excited electronic state B 3 n e+ of IF has