引用本文:
蔡中厚, 侯惠奇, 秦启宗. SF6-UF6体系中六氟化铀的振动弛豫研究[J]. 物理化学学报,
1987, 3(02): 197-203.
doi:
10.3866/PKU.WHXB19870215
Citation: Cai Zhonghou, Hou Huiqi, Qin Qizong. VIBRATIONAL RELAXATION OF UFB IN SF6-UF6 SYSTEM[J]. Acta Physico-Chimica Sinica, 1987, 3(02): 197-203. doi: 10.3866/PKU.WHXB19870215
Citation: Cai Zhonghou, Hou Huiqi, Qin Qizong. VIBRATIONAL RELAXATION OF UFB IN SF6-UF6 SYSTEM[J]. Acta Physico-Chimica Sinica, 1987, 3(02): 197-203. doi: 10.3866/PKU.WHXB19870215
SF6-UF6体系中六氟化铀的振动弛豫研究
摘要:
本文以脉冲CO_2激光激发SF_6, 经碰撞再使UF_6分子激发, 通过测定振动受激UF_6的紫外吸收变化, 研究了六氟化铀分子的振动弛豫过程。对于2.0. Torr SF_6+2.0 Torr UF_6体系, 在220-320 nm范围内测定了UF_6的紫外吸收信号随时间的变化, 测得UF_6三类不同振动受激态分子间的V-V能量弛豫时间分别为6.8, 9.0和26 μs, 相应的V-T能量弛豫时间为42, 8和1 ms。此外, 还讨论了SF_6-UF_6体系中振动能量弛豫的机理。
English
VIBRATIONAL RELAXATION OF UFB IN SF6-UF6 SYSTEM
Abstract:
The vibrational energy transfer in SF_6-UF_6 system has been investigated using a pulsed TEA CO_2 laser for excitation of SF_6 and SF_6~* is employed as a sensitizer to excite UF_6 molecule. The transient changes in UV absorption of the vibration- ally excited UF_6 molecules in 220-320 nm region have been observed. For 2.0 Torr SF_6+2.0 Torr UF_6 system, three different kinds of vibrationally excited UF_6 have been found and their V-V intermolecular energy transfer times are 6.8, 9.0 and 26 μs, the V-T energy relaxation times are 42, 8.0 and 1 ms respectively. The vibrational energy transfer mechanism of SF_6-UF_6 system has been discussed.
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