High-resolution absorption cross section measurements of NO2 in the UV and visible region

Communication: Equilibrium rate coefficients from atomistic simulations: The O(3P) + NO(2Π) → O2(X3Σg−) + N(4S) reaction at temperatures relevant to the hypersonic flight regime

“…As an example, NO 2 -which can decay into NO + O or O 2 + N-plays a major role in atmospheric chemistry, as a smog constituent and in combustion processes. [1][2][3] The reaction characteristics change from formation of NO 2 to exchange and dissociation reactions at higher temperatures (1000-20 000 K). Above 20 000 K, it is expected that the reactions will be dominated by the complete dissociation to the atomic species.…”

Ultra-violet absorption cross sections of isotopically substituted nitrous oxide species: <sup>14</sup>N<sup>14</sup>NO, <sup>15</sup>N<sup>14</sup>NO, <sup>14</sup>N<sup>15</sup>NO and <sup>15</sup>N<sup>15</sup>NO

“…After the calibration (which resulted in a wavelength shift of: λ estimated =1.0034*λ reading ) a comparison of the natural abundance spectrum with the temperature-corrected high-resolution data from Yoshino et al (1997) showed a good match (Fig. 2).…”

“…As the wavelength region 200 to 210 nm is the most important in terms of stratospheric photolysis of nitrous oxide (Yung and Miller, 1997), the data from Selwyn and Johnston are insufficient. Since the red shoulder of the N 2 O absorption spectrum above about 188 nm has very little vibrational structure (Yoshino et al, 1997), broadband photolysis and subsequent isotopic analysis appears to be a reasonable way of characterizing the magnitude of isotopic fractionation (Kaiser et al, 2002b(Kaiser et al, , 2003cRöckmann et al, 2001). Kaiser et al (2003c) used the collective results from broadband photolysis and "single wavelength" photolysis experiments to derive a linear fit of fractionation constant vs. wavelength for the range 190 to 220 nm.…”

Modeling the vapor–liquid equilibrium and association of nitrogen dioxide/dinitrogen tetroxide and its mixtures with carbon dioxide

“…Calculations and experimental points of James and Marshall [7] differ by an order of magnitude but the absolute value of the non bonded NO 2 remains extremely small. Figure 5 shows the molar fraction of non bonded NO 2 in the vapor phase versus the pressure at 293.15 K. Circles represent experimental data from Yoshino et al [45] while the line is the crossover soft-SAFT EoS prediction. The agreement obtained between the experimental measurements and the theory is within the experimental uncertainty, further reassuring the validity of soft-SAFT for these systems.…”