Kinetics of neutralization of Po-218
Abstract
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.
- Authors:
- Publication Date:
- Research Org.:
- Illinois Univ., Urbana (USA)
- OSTI Identifier:
- 5476686
- Resource Type:
- Thesis/Dissertation
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 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
Citation Formats
Chu, K D. Kinetics of neutralization of Po-218. United States: N. p., 1987.
Web.
Chu, K D. Kinetics of neutralization of Po-218. United States.
Chu, K D. 1987.
"Kinetics of neutralization of Po-218". United States.
@article{osti_5476686,
title = {Kinetics of neutralization of Po-218},
author = {Chu, K D},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5476686},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1987},
month = {Thu Jan 01 00:00:00 EST 1987}
}