From the investigation of the de pendence of the IR MPD yield of CF_3I and the buffer gas pressure and from the measurement of multiphoton absorption of CF_3I, small molecule character was found for CF_3I when it was excited by IR laser.

• 从对CF_3I的红外多光子解离率与外加气体压力的变化关系的研究,以及CF_3I红外多光子吸收的测量,揭示出该分子在受红外激光激发时,具有小分子的特性。