Enthalpy and entropy increments above 298 deg K and a sigma-plot treatment of vaporization data for niobium pentachloride.
Tables of enthalpy and entropy increments for condensed phases of niobium pentachloride in drop calorimeter
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Tables of enthalpy and entropy increments for condensed phases of niobium pentachloride in drop calorimeter
Rotational lines in iodine B-X system vibrational bands, calculating Doppler, natural and collisional widths
Nitrogen deactivation by ground state atomic oxygen resulting in metastable oxygen atom as auroral green line source
Auroral molecular nitrogen bands tentative identification based on rocket-borne spectrometer results
Spectrophotometric results from NASA 1968 Airborne Auroral Expedition and tentative identification of several molecular nitrogen emission bands
Atomic collision time delay functions and quasibound level properties of ground state of molecular hydrogen
Computations of binding energies and vibrational energies of ground state molecular hydrogen to measure accuracy of dissociation energy
Approximation of scattering resonance energies and widths of ground state of molecular hydrogen from energy dependence of atomic collisional time delay functions
Expectation values and kinetic energy for vibrational-rotational levels of ground states of H2, HD, and D2
Attempted rocket-borne radiometer observations of molecular oxygen nighttime emission in near infrared at zero deg latitude
Relaxation method for direct measurement of molecular oxygen quenching rate constants in discharge flow system
Diatomic molecules nonsigma states rotational excitation adiabatic theory
Energy dependence of collisional time delay functions computed for H/1S/ atoms interacting via hydrogen potential, determining scattering cross sections
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The band strength of the 0,0 band of a CO Cameron system has been determined from measurements of the equivalent widths of a number of resolved rotational lines. Equivalent widths were converted to line strengths using a Doppler curve of growth. The result obtained agrees almost exactly with that of Fairbairn (1970).
The CO(A 1 Pi) cross sections reported here, along with previously determined electron impact results, establish the basis for calculating CO fourth positive system volume emission rates in the Martian dayglow. Calculated volume emission rates in turn determine relative distribution of photon vs. electron impact as mechanisms for producing CO(A 1 Pi) in the Mars atmosphere. The smallness of the O(1304) cross section confirms previous indirect evidence that photodissociative excitation of CO2 is not an important source of O(3 S) in the upper atmosphere of Mars.
Electron energy-loss spectra have been obtained for N2 at 20.6 eV impact energy, and scattering angles of 10-138 deg. The differential cross section for excitation of the W triplet Delta(U) state is the largest triplet-state cross section at all scattering angles, and is the largest inelastic cross section at angles greater than 70 degrees. (Author Modified Abstract)
The vibrational relaxation of individual vibration rotation levels of carbon monoxide behind incident shock waves of carbon monoxide has been studied by the method of laser absorption. For the particular vibrational states (V = 4 to 7) and temperature range (2500 to 5500 K) studied, it is concluded that the characteristic relaxation times are in excellent agreement with those obtained via previous measurements of 'bulk' gas properties. Further, the data furnish strong corroboration of the idea that the individual levels are in Boltzmann vibrational equilibrium during the relaxation process.