Use of spin-labeling techniques to study the dynamics of surface Penning ionization

Journal Article · Sun Nov 15 04:00:00 EST 1992 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.463976· OSTI ID:7196645

Oro, D M; Lin, Q; Zhang, X; Dunning, F B; Walters, G K ^[1]

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1. Department of Physics and the Rice Quantum Institute, Rice University, P. O. Box 1892, Houston, Texas 77251 (United States)

Spin labeling techniques, specifically the use of electron-spin-polarized He(2 {sup 3}{ital S}) metastable atoms coupled with energy-resolved spin analysis of the ejected electrons, are used to investigate the dynamics of metastable atom deexcitation by molecules in a film several monolayers thick condensed on a cooled Cu(100) surface. Data for CO{sub 2}, H{sub 2}O, Cl{sub 2}, and O{sub 2} films show that metastable deexcitation is analogous to gas-phase Penning ionization, i.e., the condensed molecules can be considered as a solid gas.'' Detailed differences are, however, evident that can be attributed to the presence of neighboring molecules. Data for C{sub 60} films are also presented which suggest the possibility of plasmon excitation as is observed in photoionization and electron energy loss data.

• OSTI ID: 7196645
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 97:10; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

665300* -- Interactions Between Beams & Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOM COLLISIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHLORINE
COBALT 60
COBALT ISOTOPES
COLLISIONS
COOLING
COPPER
DE-EXCITATION
DYNAMICS
ELECTRIC DISCHARGES
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
ENERGY LOSSES
ENERGY RESOLUTION
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FERMIONS
FILMS
FLUIDS
GASES
HALOGENS
HELIUM
HYDROGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LAYERS
LEPTONS
LOSSES
MECHANICS
METALS
METASTABLE STATES
MINUTES LIVING RADIOISOTOPES
MOLECULES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORIENTATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PENNING DISCHARGES
PHOTOIONIZATION
PLASMONS
QUASI PARTICLES
RADIOISOTOPES
RARE GASES
RESOLUTION
SPIN ORIENTATION
SURFACES
TARGETS
TEMPERATURE RANGE
TEMPERATURE RANGE 0013-0065 K
TRANSITION ELEMENTS
WATER
YEARS LIVING RADIOISOT