The study of neutralization of Po-218 ions by small ion recombination in O/sub 2/, Ar and N/sub 2/

Technical Report · Mon May 01 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/6229591· OSTI ID:6229591

Shi, Baolan

Three mechanisms of neutralization of Po/sup +/, electron transfer, electron scavenging and small ion recombination, have been suggested. Considerable work has been conducted on the first two mechanisms. However, little information about the small ion recombination is available. In the present research, this mechanism was studied by examining the neutralization rates in different radon concentrations in N/sub 2/, Ar, and O/sub 2/ with the aid of a continuous monitoring of radon and progency experimental system. The results showed that the neutralization rates in the three gases are around 2 to 4 sec/sup /minus/1/. A linear relationship between the neutralization rate and the square root of radon concentration was obtained. It was also found that the neutralization rates are higher in the gas with lower ionization potential. The charged fraction of polonium in all cases was measured to be 0.88. Further, the existence of the neutralization rate plateau at high radon concentrations was strongly suggested. 24 refs.

• Research Organization: Illinois Univ., Urbana (USA). Dept. of Nuclear Engineering
• DOE Contract Number: FG02-87ER60546
• OSTI ID: 6229591
• Report Number(s): DOE/ER/60546-4; ON: DE89013605
• Country of Publication: United States
• Language: English

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