Self-broadened and foreign-gas (N/sub 2/ and O/sub 2/) broadened linewidths of HNO/sub 3/ vapor at 300/sup 0/K for a wide range of quantum numbers J and K/sub a/, for all three types of transitions, have been calculated using the Anderson-Tsao-Curnutte theory of line broadening. Due to the very large dipole moment of nitric acid vapor, contributions arising from higher order multipole moments of HNO/sub 3/ to the linewidth will be insignificant and have been neglected in present computations. Thus, in the case of HNO/sub 3/-HNO/sub 3/ collisions, only dipole-dipole interaction has been included. For HNO/sub 3/-N/sub 2/ and HNO/sub 3/-O/sub …
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Self-broadened and foreign-gas (N/sub 2/ and O/sub 2/) broadened linewidths of HNO/sub 3/ vapor at 300/sup 0/K for a wide range of quantum numbers J and K/sub a/, for all three types of transitions, have been calculated using the Anderson-Tsao-Curnutte theory of line broadening. Due to the very large dipole moment of nitric acid vapor, contributions arising from higher order multipole moments of HNO/sub 3/ to the linewidth will be insignificant and have been neglected in present computations. Thus, in the case of HNO/sub 3/-HNO/sub 3/ collisions, only dipole-dipole interaction has been included. For HNO/sub 3/-N/sub 2/ and HNO/sub 3/-O/sub 2/ collisions, dipole-quadrupole interaction was taken into account. Air-broadened linewidths of HNO/sub 3/ at 200/sup 0/K have also been calculated, so that the temperature dependence can be estimated.
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