- 作者： 張華; 王家麟; 曾國典
- 作者服務機構： Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, R.O.C.
- 中文摘要：
The resonance Raman spectra of gaseous iodine bromide IBr have been studied with the excitation of various argon ion laser lines from 5017 to 4579A. The fine structures of the fundamental and few overtones of IBr are also studied by various power of 4880A laser line. The resonance Raman scattering is found to be strong as that of Br/sub 2/ and ICl. A new term "apparent spectroscopic temperature" is suggusted for the case of the resonance Raman scattering. The apparent spectroscopic temperatures measured in this cell show that the system is not in thermal equilibrium. Br/sub 2/ is the hottest and I/sub 2/ is the coldest. IBr is in the middle. Unfortunately, no chemical reaction enhanced phenomenon is found although there should be some chemical reactions occuring under the laser light. The initiating reaction is the photodissociation of the main component IBr which also has large absorptivity. Because of the non-crossing between the B/sup 3/II and the
/sup 1/II states, the primary products of the photodissociation should be I and Br. The chemical reactions of I and Br with IBr follow. The reactions of I and IBr is endothermic but the reaction of Br with IBr is exothermic. Therefore vibrational hot Br/sub 2/ is produced and its apparent spectroscopic temperature should be higher. On the other hand, the apparent spectroscopic temperature of I/sub 2/ is lower. - 英文摘要： --
- 中文關鍵字： Resonance Raman Spectrum; Interhalogen Gas; Apparent Spectroscopic Temperature
- 英文關鍵字： Resonance Raman Spectrum; Interhalogen Gas; Apparent Spectroscopic Temperature
