Nakano Yukio, Fujiwara Hisashi, Fukushima Masaru, Ishiwata Takashi
Graduate School of Information Sciences, Hiroshima City University, Ozukahigashi, Asaminami, Hiroshima 731-3194, Japan.
J Chem Phys. 2008 Apr 28;128(16):164320. doi: 10.1063/1.2898881.
This paper reports the results of processes resulting in D0(u) (+)-X (1)Sigma(g) (+) emission when a single rovibrational level of the E0(g) (+) state is prepared. Our study reveals that two kinds of processes populate the D0(u) (+) state; which one occurs depends on the experimental conditions. One process involves amplified spontaneous emission from the E0(g) (+) state. The other is collision-induced energy transfer in self-quenching. We distinguish these two processes from the time profiles of fluorescence signals. These processes give completely different vibrational distributions in the D0(u) (+) state from a given rovibrational level of the E0(g) (+) state. The discrepancy between our results and previous results for the E0(g) (+)-->D0(u) (+) relaxation is briefly discussed.
本文报道了在制备E0(g) (+)态的单个振转能级时产生D0(u) (+)-X (1)Sigma(g) (+)发射的过程结果。我们的研究表明，有两种过程可使D0(u) (+)态布居；具体发生哪一种取决于实验条件。一种过程涉及E0(g) (+)态的放大自发发射。另一种是自猝灭中的碰撞诱导能量转移。我们从荧光信号的时间分布中区分出这两种过程。这些过程从E0(g) (+)态的给定振转能级在D0(u) (+)态给出完全不同的振动分布。简要讨论了我们的结果与先前关于E0(g) (+)-->D0(u) (+)弛豫的结果之间的差异。
