Abstract
A rate equations model was used to calculate the pressure dependence of SF 6 multiphoton dissociation yields caused by vibrational self-quenching. Between 1000 and 3000 cm −1 of energy is removed from SF 6 excited to ⩾ 60 kcal/mole by collision with a cold SF 6 molecule at gas kinetic rate. Calculations have shown that the fluence dependence of dissociation varies strongly with pressure, and the decrease of dissociation at higher pressures can be approximated exponentially only for narrow pressure ranges.
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