Spectroscopy and reaction kinetics of HS radicals

Environmental effects of large igneous province magmatism: a Siberian perspective

“…An even higher upper limit by Black [148], based on the lack of SH decay, may have been complicated by SH regeneration. Much less sensitive upper limits have been calculated by Tiee et al [1308], Nielsen [974], and Cupitt and Glass [336]. Stachnik and Molina [1229] also report a somewhat higher upper limit (< 1.0 × 10 -18 ) for the rate constant for the sum of the two SH + O 2 reaction channels (producing OH + SO and H + SO 2 ).…”

Influence of oxygen vibrational excitation on HS + O2 reactive collisions

“…For high temperature all curves approach each other with a tendency to a plateau. Figure 3 also displays the experimental rate constant values reported in literature for title reaction [30][31][32][33][34]. For completeness we report vibrationally averaged reactive thermal rate coefficients, obtained as:…”

“…On the other hand, under typical experimental conditions [30][31][32][33][34], the use of O 2 as vibrational quencher of excited HS radical introduces vibrational-vibrational energy transferences between both molecules producing vibrational excited oxygen and hence the possibility of allowing reaction (1) to occur. This argument also supports the concordance of our calculations with experimental results.…”

Rydberg states of the SH(SD) radical revealed by multiphoton ionization spectroscopy

“…Thus the fluorescence quantum yield of this state is not only small, but internal quantum state dependent. Consequently, there have been relatively few quantitative measurements of SH(X) or SD(X) radical concentrations using LIF on the A-X transition as the radical probe [5][6][7][8], and even fewer attempts at determining internal quantum state population distributions for these species [9].…”