Experimental identification of saddle-point electrons

Journal Article · Mon Jul 04 04:00:00 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), Journal Name: Physical Review Letters; (United States) Vol. 73:1; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

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