ELECTRONICALLY EXCITED HALOGEN ATOMS AND SPIN ORBIT RELAXATION
TL;DRAbstract
The optical metastability arising from the slow electric dipole forbidden transition $X n^{2}P_{1/2}\\to X n^{2}P_{3/2}+h\\nu$ facilitates the direct study of electronically excited bromine and iodine atoms, $Br(4^{2}P_{^{1}/_{2}})$ and $I(5^{2}P_{^{1}/_{2}})$ and the atoms in their ground states, by kinetic spectroscopy in absorption in the vacuum ultraviolet. The electronically excited atoms are generated by the flash photolysis of a number of simple bromides and iodides of which $CF_{3}Br$ and $CF_{3}I$ are the most convenient sources. Kinetic measurements on the spin orbit relaxation of $Br(4^{2}P_{^{1}/_{2}})$ and $I(5^{2}P_{^{3}/_{2}})$ in the presence of a large number of gases have been carried out in times during which the contribution to the rate from slow atomic recombination is negligible. The relatively large electronic energies of these states cannot be totally transferred to translation, and when the effect of inert gases can be investigated in the absence of significant
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The optical metastability arising from the slow electric dipole forbidden transition $X n^{2}P_{1/2}\\to X n^{2}P_{3/2}+h\\nu$ facilitates the direct study of electronically excited bromine and iodine atoms, $Br(4^{2}P_{^{1}/_{2}})$ and $I(5^{2}P_{^{1}/_{2}})$ and the atoms in their ground states, by kinetic spectroscopy in absorption in the vacuum ultraviolet. The electronically excited atoms are generated by the flash photolysis of a number of simple bromides and iodides of which $CF_{3}Br$ and $CF_{3}I$ are the most convenient sources. Kinetic measurements on the spin orbit relaxation of $Br(4^{2}P_{^{1}/_{2}})$ and $I(5^{2}P_{^{3}/_{2}})$ in the presence of a large number of gases have been carried out in times during which the contribution to the rate from slow atomic recombination is negligible. The relatively large electronic energies of these states cannot be totally transferred to translation, and when the effect of inert gases can be investigated in the absence of significant
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