Rates of energy transfer from N2 A 3? + u to various molecules. Initial and final quantum states in the transfer to NOX 2? and Hg(61 S 0), and vibrational relaxation of N2 A 3? + u (v= 1) in helium

摘要: A technique of monochromatic flash spectroscopy with the resonance radiations Xe (1470 A) and Kr (1236 is described, a quantal absorption 1.4 × 1014 quanta cm–3 per pulse. Production decay N2A3Σ+u(v= 0,1) was monitored photoelectrically from sensitized fluorescence either NO(γ-bands) or Hg (2537 line. Rate coefficients for deactivation N2A3Σ+u were recorded as kHg= 2.9 10–10; kC2H2= 1.6 kC2H4= 1.1 kNO= 8.0 10–11; kNH3 < 2 kN2O= 6.1 10–12; kO2= 3.6 kn-C4H10= 2.7 kCO(N*2(v= 0))= 1.5 10–12, 1))= 2.4 kC3H8= 1.3 kC2H6= 10–13; kH2= 3 10–15 cm3 molecule–1 s–1; significant difference in rates v= 0 1 states found only CO. Except transfer to NH3 Hg, measurements agree well those Young et al.1–5 In high pressures He, vibrational relaxation 1) induced by collision prior its deactivation, rate coefficient 1.2 10–15cm3 molecule –1 s–1 recorded. Correlation initial final quantum achieved NO, which populates predominantly A2Σ+(v= : 0)+ NOX2Π(v= 0)→ N2X1Σ+g+ NOA2Σ+(v= = 1:9·5); 1)+ 1:0 1:1·9). The results analyzed model transition probabilities are proportional products two Franck-Condon factors mean density associated particular reaction channels. Transfer directly Hg(63P0) state extent about 25 %. From comparison simultaneous NO γ 2537 emissions, it suggested that excitation NOA2Σ+ occurs nearly unit efficiency. Excited atomic iodine (I52P½) detected, via 2060 line kinetic spectroscopy, CH3I.