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以磷酸三丁酯为激发分子清除剂,测定了γ辐照下环己烷最低激发单态的G值,并与Lipsky的荧光光谱法的结果进行了比较。求得环己烷最低激发单态的G值为1.3±0.2,与最近报道的荧光光谱法的结果基本一致。还存在环己烷的另一激发态,G值为0.26±0.04,τ≈6ns,可能是激发三重态。环己烷-磷酸三丁酯含N_2体系在γ辐照下,其环己烷最低激发单态的能量转移受扩散控制,求得k_t=0.6×10~(10)mol~(-1)·dm~3·s~(-1),与理论值k_(SES)一致。
The G value of the lowest excited singlet of cyclohexane under γ irradiation was determined by using tributylphosphate as the scavenger, and the results were compared with that of Lipsky’s fluorescence spectrometry. The G value of the minimum excited singlet of cyclohexane was found to be 1.3 ± 0.2, which is consistent with the recently reported fluorescence spectrometry. There is also another excited state of cyclohexane, G value of 0.26 ± 0.04, τ ≈ 6ns, may be excited triplet state. The energy transfer of cyclohexane - tributyl phosphate N_2 containing system under γ - irradiation was controlled by diffusion and the k_t value was 0.6 × 10 ~ (10) mol ~ (-1) · dm ~ 3 · s ~ (-1), which is consistent with the theoretical value k_ (SES).