Zobrazeno 1 - 10
of 121
pro vyhledávání: '"M. R. C. McDowell"'
Autor:
E. W. McDaniel, M. R. C. McDowell
Case Studies in Atomic Collision Physics II focuses on studies on the role of atomic collision processes in astrophysical plasmas, including ionic recombination, electron transport, and position scattering. The book first discusses three-body recombi
Publikováno v:
Physics Today. 46:124-125
Autor:
P F Naccache, M R C McDowell
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 7:2203-2222
For pt.IV, see abstr. A5820 of 1972. A phase shift analysis of electron-helium scattering in the energy range from 10-2 to 102 eV and of electron-neon scattering from 3*10-2 to 60 eV is reported, using new measurements of the elastic differential cro
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 14:2687-2704
Calculations are reported of total and differential cross sections for elastic scattering and excitation of the 11S to 21S and 11S to 21P transitions in helium by positrons with energies between 60 and 400 eV. Results are given in three-state close-c
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 20:3125-3155
The authors report a comparative study of the quantal and classical treatments of single-electron charge transfer from the L and K shells of Li(1s22s) in collision with He2+ ions at intermediate energies. Quantal calculations have been performed usin
Autor:
M R C McDowell, K L Baluja
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 12:835-845
A distorted-wave model is used to calculate electron impact excitation of the 21P and 23S states of helium from the ground state at energies from 30 to 200 eV. Total and differential cross sections are calculated and compared with the results of othe
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 18:3921-3937
The classical theory of charge transfer and ionisation of hydrogen atoms by protons, first developed by Abrines and Percival (1966), is extended to the case in which the interactions between the three particles are not of pure Coulomb type. The model
Autor:
A M Ermolaev, M R C McDowell
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 20:L379-L383
Charge exchange, excitation and ionisation cross sections for p+Li2+ collisions have been calculated for laboratory impact energies from 17.5 to 3000 keV, using (i) a close-coupled atomic orbital model within the impact parameter formalism and (ii) a
Autor:
M R C McDowell, L A Morgan
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 8:1073-1081
For pt.III see ibid., vol.8, no.7, p.1053 (1975). Orientation and alignment effects observable in coincidence measurements of Ly alpha photons and scattered electrons are discussed. Results, in the DWPO II model are presented for the Fano-Macek param
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 16:4005-4014
Expansions of a plane wave in Landau states are derived corresponding to an adiabatic and to a sudden switching on of the magnetic field. Two earlier solutions given by Faisal (1982) and by Ohsaki (1983) are found to be valid alternative expansions i