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Physics

Atomic / Molecular / Quantum

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Displaying 676 - 700 of 702

Superelastic Scattering of Spin-polarized Electrons from Sodium

September 1, 1989
Author(s)
Jabez J. McClelland, Michael H. Kelley, Robert Celotta
Superelastic scattering of spin-polarized electrons from laser-excited sodium atoms has been measured at incident energies of 2.0, 17.9, and 52.3 eV over the angular range 10°-120°. Circularly polarized excitation of the sodium atoms was used to produce

Exchange Asymmetry in Elastic Scattering of Electrons by Sodium Atoms

April 1, 1988
Author(s)
D H. Oza
Calculations of the exchange asymmetry in elastic scattering of electrons by sodium atoms are reported at incident electron energies of 10 and 54.4 eV. The close-coupling calculations are performed with the four lowest target states of the sodium atom. At

Large Angle Superelastic Electron Scattering from Na(3P)

June 28, 1987
Author(s)
Jabez J. McClelland, Michael H. Kelley, Robert Celotta
Measurements of superelastic scattering of 2eV electrons from oriented Na(3P) atoms have been carried out over the angular range 10 to 120°. Results are presented in terms of L perp}, the angular momentum transferred perpendicular to the scattering plane

Detailed Look at Aspects of Optical Pumping in Sodium

January 1, 1985
Author(s)
Jabez J. McClelland, Michael H. Kelley
Calculations and measurements are presented of the increase in F-bar=1 ground-state population as a function of incident laser intensity in optically pumped sodium. The calculations involve numerical integration of a multilevel version of the optical Bloch

Spin Dependence in Superelastic Electron Scattering from Na(3P)

January 1, 1985
Author(s)
Jabez J. McClelland, Michael H. Kelley, Robert Celotta
Measurements are presented of spin asymmetries for superelastic scattering of 10-eV spin-polarized electrons from the excited Na(3P 3/2) state created by linearly polarized laser optical pumping. Asymmetries as large as 16% are observed in scattering from

Near-Threshold Measurements of the Spin Dependence of Electron-Impact Ionization

January 1, 1983
Author(s)
Michael H. Kelley, W Rogers, Robert Celotta, S Mielczarek
The spin dependence of the electron-impact ionization of Na has been measured up to 2 eV above threshold with high precision to search for the existence of characteristic oscillations which would support the Coulomb-dipole theory of threshold ionization
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