Efficient I(5 2P1⁄2) Production by the Reaction of I2 with NCl3 Flame
2008
When gaseous iodine was admitted into the NCl 3 autodecomposition flame, intense 1(5 2 P 1/2 ) → I(5 2 P 3/2 ) emission was observed owing to direct pumping of iodine atoms by NCl 3 flame. It is found that the chemical environment of NCl 3 flame is benign for 1(5 2 P 3/2 ). The mechanisms of 1(5 2 P 1/2 ) production in the NCl 3 /I 2 reactive gas flow are discussed for the first time. It is believed that Frank-Condon favored E-E energy transfer from Cl 2 (B) to 1(5 2 P 3/2 ) and the nearly resonant V-E energy transfer from Cl 2 (X, v = 15) to 1(5 2 P 3/2 ) respond for the production of excited state iodine atoms.
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