Electron excitation of Na(3S) and Na(3P) atoms to the Na(3D) state
Journal Article
·
· Phys. Rev. A; (United States)
The cross sections for electron-impact excitation of Na(3S) and Na(3P) atoms to the 3D state have been measured from threshold to 1000 eV, with approx.0.3 eV resolution. The 3P-state atoms are produced in the m/sub l/ = 1, m/sub s/ = (1/2) level by optical excitation, and 3D..-->..3P fluorescence is detected at 90/sup 0/ to the quantization axis. The resulting polarization anisotropies are considered, and included along with cascade effects in the high-energy normalizations to the Born approximation. The 3S..-->..3D and 3P..-->..3D excitation cross sections both rise very abruptly at threshold, and are indistinguishable from a step function with our energy resolution.
- Research Organization:
- Joint Institute for Laboratory Astrophysics, University of Colorado; National Bureau of Standards, Boulder, Colorado 80309
- OSTI ID:
- 6238162
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 32:6; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY DEPENDENCE
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE RESONANCE
METALS
NUMERICAL DATA
OPTICAL PUMPING
PUMPING
RESONANCE
SODIUM
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY DEPENDENCE
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE RESONANCE
METALS
NUMERICAL DATA
OPTICAL PUMPING
PUMPING
RESONANCE
SODIUM