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Hydrogen and inert gas atoms collisional excitation cross sections calculated by multistate impact parameter approximation
Computer programs for calculation of thermodynamic and transport properties of eight cryogenic fluids
He excitation by He, Ne, Ar and Kr collisions, calculating first Born wave cross section
Neutral Ar and Ne resonance lines Stark broadening constant from Stark width-oscillator strength product
Cross sections for single-electron capture by C/4 plus/ from He, Ne and Ar target gases
Solid Ne isotopes specific heat at constant pressure and volume, entropy, enthalpy and Gruneisen parameters
Bromine dissociation rates in presence of He, Ne, Ar, Kr and Xe, determining rate constant expressions from light absorption measurements behind incident shock waves
He, Ne and Ar isotopic distribution and origin in Apollo 12 lunar samples, considering solar wind implantation
The Brueckner-Hartree-Fock (BHF) method has been applied to nuclei whose intrinsic structure is nonspherical. Reaction matrix elements were calculated as functions of starting energy for the Hamada-Johnston interaction using the Pauli operator appropriate to O-16 and a shifted oscillator spectrum for virtual excited states. Binding energies, single particle energies, radii, and shape deformations of the intrinsic state, in ordinary as well as renormalized BHF, are discussed and compared with previous HF studies and with experiment when possible. Results are presented for C-12, 0-16 and Ne-20. It is found that the binding energies and radii are too small, but that separation energies are well reproduced when the renormalized theory is used.
The He-4 and Ne-20 contents in sections of the Surveyor 3 support strut samples were determined by optical and scanning electron microscopy and are compared to the results of the Apollo solar wind composition (SWC) experiments. The He-4/Ne-20 ratio in the samples from the sunlit side of the strut was approximately 300; the ratios determined in Apollo 12 lunar fines and SWC foil were below 100. The He-4/He-3 ratios were also determined, and the ratio obtained from Surveyor 3 material is higher than those found with Apollo 11 and 12 SWC experiments. The effects of spallation by cosmic rays or solar protons, stripping by cosmic ray or energetic solar alpha particles, recycling of solar wind He and radiogenic Ne, He from terrestrial atmosphere, mass discrimination near the moon, mass dependence of trapping probability, diffusion, and contamination by lunar dust are considered.
About 180 new spectral lines of Ne V, Ne VI, Ne VII, and Ne VIII have been measured and identified on spectrograms obtained from a large theta-pinch apparatus. The spectrograms covered the range from 50 to 200 A. The lines were classified by means of isoelectronic extrapolations and interpolations.
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Excitation of the 4d and 5p levels of Zn+ by charge exchange bewteen Ne+ and Zn was investigated. From measured electron temperature and line intensity ratios it was concluded that charge exchange is the dominate mechanism for populating the 4d2D5/2 level of Zn+. Comparison of Zn-Ne and Zn-Ar results imply the same conclusion. No evidence for charge exchange as the dominant pumping mechanism for the 5p2Pl/2, 5p2P3/2, or 4d2D3/2 levels was obtained.
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