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用 YAG激光器的四倍频光光解 CF3 I得到 I( 52 p1/2 )。通过测量 I( 52 p1/2 )跃迁到基态而发出的 1 .3 1 5μm荧光得到 I( 52 p1/2 )的自发辐射寿命为 0 .0 3 7± 0 .0 0 5s,测得 CF3 I、O2 、He对 I( 52 p1/2 )的猝灭常数分别为 80 .69Pa-1s-1、2 99.97Pa-1s-1及 2 9.3 3 Pa-1s-1。
I (52 p1 / 2) was obtained by photolysis of CF3 I with a fourth harmonic of a YAG laser. The lifetime of spontaneous emission of I (52 p1 / 2) obtained from the measurement of I (52 p1 / 2) transition to the ground state was found to be 0.307 ± 0.505s and the measured fluorescence of CF3I , The quenching constants of O2 and He to I (52 p1 / 2) were 80.69Pa-1s-1,299.97Pa-1s-1and2.993Pa-1s-1, respectively.