Band Spectrum of CIO in Flames

An ab initio investigation on the ground electronic state of chlorine monoxide and its singly charged cation and anion

“…The existence of the ClO radical was first experimentally confirmed by Pannetier and Gaydon in 1948 [7]. Thereafter, a variety of experimental techniques have been performed to study ClO, including methods of flash photolysis [8][9][10] spectroscopy [11], microwave spectroscopy [12][13][14][15], ultraviolet spectroscopy [16,17], matrix isolation [18], laser magnetic resonance spectroscopy [19], infrared spectroscopy [20,21], multiphoton ionization spectroscopy [22,23], laser-induced fluorescence spectroscopy [24], resonance-enhanced multiphoton ionization [25][26][27] and velocity-map ion-imaging [28][29][30].…”

Resonance-enhanced multiphoton ionisation photoelectron spectroscopy of the ClO radical: the C 2Σ- state

“…ClO radicals were produced through photolysis of via the (10,0,0) band of its dissociative ClO 2 excited state, with the dissociation laser set at 359. 2 41 The sample was e †usively introduced into the spectrometer, with typical pressures of 10~4 mbar in the ionization region and 10~6 mbar in the Ñight tube at a system background pressure of 2 ] 10~7 mbar.…”

Determination of dissociation constants and heats of formation of molecules by flame photometry. Part 7.—Flame photometric study of the IO radical

“…The results form a pattern which is strikingly similar to that of lig. 3 for LO], even to the irregularities which result from working at constant distance rather than constant time from the reaction zone. This provides further evidence in favour of the chosen mechanism of formation and excitation, in so far that if the alternative of reversible biinolecular formation with cheiniluminescent excitation were to occur, then the cheiniluminescence would have to be by reaction (11) to the exclusion of reaction (10) in order to produce the observed separation of the " families ".…”