Experimental identification of saddle-point electrons

Journal Article · Mon Jul 04 00:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.46· OSTI ID:7079807

Pieksma, M; Ovchinnikov, S Y; van Eck, J; Westerveld, W B; Niehaus, A ^[1]

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1. Debye Institute, Department of Atomic and Interface Physics, Utrecht University, P.O. Box 80000, 3508 TA Utrecht (Netherlands) Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372 (United States)

Experimental and theoretical velocity distributions of electrons ejected in 1--6 keV ionizing H[sup +-]H collisions are presented. Both the experimental velocity distributions and the relative total ionization cross sections can be explained by the theory in a fully consistent way. Strong evidence is found for the existence of a saddle point ionization mechanism at collision energies of 4 keV and higher.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7079807
• Journal Information: Physical Review Letters; (United States), Vol. 73:1; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HYDROGEN
ION-ATOM COLLISIONS
HYDROGEN IONS 1 PLUS
ELECTRON EMISSION
CROSS SECTIONS
DISTRIBUTION FUNCTIONS
EXPERIMENTAL DATA
IONIZATION
LEAST SQUARE FIT
SADDLE-POINT METHOD
THEORETICAL DATA
VELOCITY
ATOM COLLISIONS
CALCULATION METHODS
CATIONS
CHARGED PARTICLES
COLLISIONS
DATA
ELEMENTS
EMISSION
FUNCTIONS
HYDROGEN IONS
INFORMATION
ION COLLISIONS
IONS
MAXIMUM-LIKELIHOOD FIT
NONMETALS
NUMERICAL DATA
NUMERICAL SOLUTION
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)