Kinetics of neutralization of Po-218

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

OSTI ID:5476686

Chu, K D

In a well-defined experimental system the neutralization of polonium-218 ions was investigated as a function of the physical and chemical properties of the controlled composition atmosphere. The mobilities of Po/sup +/ and PoO/sub 2//sup +/ are determined by combining experimental results with a computer model of the system. Three neutralization mechanisms were individually studied. The small ion recombination rate has been found to be proportional to the square root of radon concentration. The electron scavenging mechanism is responsible for the neutralization of Po/sup +/ in NO/sub 2/ or H/sub 2/O in nitrogen. When PoO/sub 2//sup +/ is formed, the electron transfer mechanism dominates the neutralization process. The electron is transferred to PoO/sub 2//sup +/ from molecules with lower ionization potentials. The ionization potential of PoO/sub 2//sup +/ is also determined to be 10.44 +/- 0.05 eV.

• Research Organization: Illinois Univ., Urbana (USA)
• OSTI ID: 5476686
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
POLONIUM 218
BEAM NEUTRALIZATION
CHEMICAL PROPERTIES
CORRELATIONS
ELECTRON TRANSFER
ION MOBILITY
IONIZATION
IONIZATION POTENTIAL
NITROGEN
NITROGEN DIOXIDE
PHYSICAL PROPERTIES
POLONIUM IONS
POLONIUM OXIDES
QUANTITY RATIO
RADON
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
CHARGED PARTICLES
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASES
HEAVY NUCLEI
IONS
ISOTOPES
MINUTES LIVING RADIOISOTOPES
MOBILITY
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PARTICLE MOBILITY
POLONIUM COMPOUNDS
POLONIUM ISOTOPES
RADIOISOTOPES
RARE GASES
400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials