Ion-pair production and chemi-ionization in atomic collisions

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:7058716

Wang, D P

Molecular-beam studies are described of ion-pair production (IPP) in the atomic systems Na-Cl, Na-Na, Na* (3P)-Na, and He* (2/sup 1,3/S)-Li and of chemi-ionization (CI) in the He (2/sup 1,3/S)-Li system. Reactions of IPP can be represented as A + B ..-->.. A/sup +/ + B/sup -/ and CI as A* + B ..-->.. A + B/sup +/ + e (Penning ionization, or PI) and A* + B ..-->.. AB/sup +/ + e (associative ionization, or AI), where in this case, A and B are atoms, and A is an electronically excited atom. Absolute and relative cross sections, Q, are measured as a function of the relative kinetic energy, W, of the reactants. The general theory of potential curve crossing is described, and an application of this theory to IPP and the connection of the theory to CI are given.

• Research Organization: California Univ., San Diego (USA)
• OSTI ID: 7058716
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BEAMS
CHLORINE
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HALOGENS
HELIUM
INTERACTIONS
ION PAIRS
IONIZATION
LITHIUM
METALS
MOLECULAR BEAMS
NONMETALS
PAIR PRODUCTION
RARE GASES
SODIUM