Authors:
V. Byakov Institute of Theoretical and Experimental Physics Moscow USSR

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V. Petuchov Institute of Theoretical and Experimental Physics Moscow USSR

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Abstract  

An expression for rate constant for diffusion controlled reaction of positronium atom /Ps/ with acceptor in condensed phase was obtained, accounting the tunnelling of Ps. The obtained equation is good also for description of the reactions of solvated electron with electroneutral molecules. Owing to the tunnelling transfer existence, the rate constant /k/ is the sum of two terms — the first of them is proportional to the coefficient of relative diffusion of reagents and the second one /characterizing the subbarrier reaction/ does not include the diffusion coefficient. The correlation of the calculated and experimentally obtained rate constants for Ps+O2 reaction in liquids with different diffusion coefficients demonstrates good agreement between theoretical and experimental results. The possibility of electron tunnelling in liquid reaction of excited anthracene quenching with dissolved oxygen is also suggested.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)