Kinetic study of the collisional quenching of electronically excited phosphorus atoms, P(32 D J , 32 P J ), by polyatomic molecules
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 69, 585-590
- https://doi.org/10.1039/f29736900585
Abstract
Electronically excited phosphorus atoms, P(32DJ) and P(32PJ), respectively 1.40 and 2.32 eV above the P(34S) ground state, have been generated by the pulsed irradiation of PCl3. The optically metastable atoms have been monitored photoelectrically by atomic absorption spectroscopy using time-resolved attenuation of resonance radiation in the ultra-violet. The decay of the excited atoms has been investigated in the presence of a number of added gases and second order rate constants (300 K) for quenching of the two atomic states are reported for the following collision partners: HCl, Cl2, CF4, CF3H, CF3Cl, SF6, C2H6, CH3CHCH2 and C2H2. The logarithms of the rate constants for the quenching of both P(32DJ) and P(32PJ) by polyatomic molecules were found to exhibit linear correlations with ionisation potential.Keywords
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