Collision-induced emission of O2 (a 1Δg → X 3Σg−) in the gas phase

O2(a1Δ) quenching in the O/O2/O3 system

“…2 [26,27]. The intensities of the collision-induced and spontaneous emissions were of the same order of magnitude for the conditions of our experiments.…”

1.27-μm emission of O2(1Δ) induced by collisions with oxygen molecules

“…Thus, relationships (15)- (17) obtained in this study can be considered as final. Note that, in [11], the ratio k C /A a ≈ 1.31 × 10 -19 cm 3 , which is close to the value determined in our work, was derived from the dependence of the integral of the normalized spectrum of the 1268-nm band on the O 2 (X) concentration. Taking the Einstein coefficient in formula (16) to be A a = 2.19 × 10 -4 s -1 [20], we find k С = (2.74 ± 0.4) × 10 -23 cm 3 s -1 , k D = (1.54 ± 0.23) × 10 -22 cm 3 s -1 .…”

“…The integral cross section of CIA (2) has been measured in a number of works, e.g., in [6,8,9]. The absolute CIE rate constant for М = О 2 , as far as we know, has been measured only in two works [10,11]. At room temperature, the spectral band 1210-1310 nm of collision-induced process (2) approximately coincides with the spectral band of emission (1) [9].…”

Solvatochromic shift of the 0-0 phosphorescence band and change of polarizability in the a 1δg → X 3Σ g − -transition in the oxygen molecule

“…Emission of a mixture of O 2 in the presence of another gas at low pressures has been investigated [26]. A continuous band in addition to discrete lines belonging to O 2 (a 1 ∆ g ) was observed near the 0-0-transition in an O 2 /NO mixture.…”