Electronically excited iodine atoms, I(5p52P½). A kinetic study of collisional quenching by time-resolved atomic absorption, I(5p46s(2P![[fraction three-over-two]](https://www.rsc.org/images/entities/char_e0ee.gif)
)�5p5(2P
°½)) at λ= 206.23 nm
Abstract
The method of atomic absorption spectroscopy by attenuation of the resonance radiation from an iodine atom lamp at 206.23 nm (I(5p46s(2P))→I(5p5(2P°½))) is described for the gas-phase kinetic study of electronically-excited iodine atoms. The collisional decay of I(52P½), generated by the pulsed irradiation of CF3I, has been investigated and the quenching constants for a number of gases are reported and compared with those obtained from other time-resolved studies of this atomic state.
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![[fraction three-over-two]](https://www.rsc.org/images/entities/h2_char_e0ee.gif)
)â†�5p5(2P°½)) at λ= 206.23 nm