Ionization of liquid hydrocarbons and tetramethylsilane by /sup 241/Am alpha particles

Journal Article · Tue Jul 15 04:00:00 EDT 1986 · J. Chem. Phys.; (United States)

OSTI ID:5698198

Munoz, R C; Cumming, J B; Holroyd, R A

The charge spectra resulting from alpha particle ionization of tetramethylsilane, neopentane, 2,2,4,4-tetramethylpentane, 2,2,4-trimethylpentane, and 2,2-dimethylbutane were measured as a function of field. The data are evaluated in terms of the track models proposed by Jaffe and by Kramers. These models explain the observed increase in asymmetry of the spectral shape with increasing field in terms of the orientation of the alpha tracks. However, they fail to account for all the results in detail. From a consideration of the deficiencies of these models we formulate several modifications which should be considered in developing a correct model. The most important among these is the internal field arising from the difference between positive and negative ion densities which should be explicitly included along with the contribution of delta rays.

• Research Organization: Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 5698198
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 85:2; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

2-2-DIMETHYLPROPANE
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKANES
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
ALPHA SOURCES
AMERICIUM 241
AMERICIUM ISOTOPES
CHARGED PARTICLES
CHEMISTRY
COLLISIONS
ELECTRON MOBILITY
FLUIDS
HEAVY NUCLEI
HELIUM IONS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
ION COLLISIONS
ION SOURCES
ION-MOLECULE COLLISIONS
IONIZATION
IONIZATION CHAMBERS
IONS
ISOTOPES
LIQUID IONIZATION CHAMBERS
LIQUIDS
MEASURING INSTRUMENTS
MOBILITY
MOLECULE COLLISIONS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PARTICLE MOBILITY
PARTICLE SOURCES
RADIATION CHEMISTRY
RADIATION DETECTORS
RADIATION SOURCES
RADIOISOTOPES
SILANES
SILICON COMPOUNDS
YEARS LIVING RADIOISOTOPES
YIELDS