赤外2重共鳴法によるSF6高振動励起状態の動的分光研究

概要

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The vibrational energy relaxation and transfer processes were measured for SF6 gas of 0.1～0.5 Torr by a pump-probe method using two tunable TE ・CO2　lasers. The transmitted intensity of the probe beam through an SF 6 gas cell was measured by changing the probe wavelength and the time delay up to 450μs between the pump and probe pulses. The high vibrational states of V 3 mode were probed by 10.6μm P-branch as the same as those of V 4+ v 6 combination band were by 10.6μm R-branch. The time behaviors of the two induced signals are composed of 4 regions ; In the 1 st period (≦50μs)related to multiphoton excitation and V-V relaxation. In the 11 nd period (50ｰ180μs)related to energy transfers between the two modes by quasi-continuum. In theillrd period (180ｰ300μs)related to slow relaxation of bottleneck discrete levels by V -T relaxation and IVth (300ｰ450μs)restricted by gas cooling.
福井大学工学部の論文