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Full-Text Articles in Physical Sciences and Mathematics
Computed Cross Sections For Electron Transfer In Ba+ + Ba+ Collisions , Stanley J. Sramek, J.H. Macek, Gordon A. Gallup
Computed Cross Sections For Electron Transfer In Ba+ + Ba+ Collisions , Stanley J. Sramek, J.H. Macek, Gordon A. Gallup
Gordon Gallup Publications
Cross sections have been computed for the electron-transfer process Ba++Ba+→Ba+Ba++, for collision energies ranging from 25 to 500 keV. The straight-line classical-trajectory method has been used, with basis functions obtained by the multiconfiguration valence-bond method. Several numerical procedures applicable to future treatments of similar large systems were developed. The maximum cross-section value is found to be around 27π a02 (2.4 × 10-15 cm2), and occurs near collision energy 500 keV. The system's transient behavior has also been studied in detail during the collision, and it has been found that …
Theoretical Potential Curves For Excited States Of Arh And The Rate Of Collisional Quenching Of Metastable Ar By H, R.L. Vance, Gordon A. Gallup
Theoretical Potential Curves For Excited States Of Arh And The Rate Of Collisional Quenching Of Metastable Ar By H, R.L. Vance, Gordon A. Gallup
Gordon Gallup Publications
Energy curves for the ground state and the first seven excited states of ArH have been calculated using the multiconfiguration valence bond (MCVB) method. Important features of the excited curves include two distinct avoided crossings between the lowest Ar*H and the highest ArH* potential energy curves. Using these curves we have made a theoretical analysis of quenching of metastable Ar by collision with H at room temperature. Application of the Massey criterion indicates that the separation of the potential curves in the region of the crossing and the acceleration produced by the fall of the reactant channel potential curve from …
Very-Long-Lived Metastable Vibrational States Of Ba2++ , Stanley J. Sramek, J.A. Macek, Gordon A. Gallup
Very-Long-Lived Metastable Vibrational States Of Ba2++ , Stanley J. Sramek, J.A. Macek, Gordon A. Gallup
Gordon Gallup Publications
Potential-energy curves for the 1 Σg+ states of Ba2++ are exhibited. The ground-state curve shows a local minimum lying 0.0562 a.u. above the energy at infinite separation, and a local maximum lying at 0.0618. These features form a potential well in which metastable vibrational states can exist. The lifetimes are estimated as high as 10197 sec, using the WKB method. Considerations regarding experimental formation and detection of bound Ba2++ are discussed.