Primary Chemical Processes in the Radiolysis of Liquids: Annual Progress Report, September 15, 1965 to September 14, 1966

Technical Report · Sat Jun 11 00:00:00 EDT 1966

DOI:https://doi.org/10.2172/4532431· OSTI ID:4532431

Trumbore, C. N. ^[1]

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1. Univ. of Delaware, Newark, DE (United States)

Studies were continued on the detection in liquids of chemical and physical precursors which are ultimately responsible for radiolytic damage. Continuing studies on the aqueous p-nitrosodimethylaniline (RNO) system provided some unusual results which may not be accounted for by the commonly invoked radiolytic intermediates, ∙H, ∙OH, and e$$^-_{aq}$$. These studies are carried out at low RNO concentrations where quantitative studies are made of G(-RNO) as a function of RNO concentration, pH and added solute concentration. Several pieces of evidence point to some kind of excited water molecule as the ∙H, ∙OH and/or $$^-_{aq}$$ precursor which is scavenged at high solute concentrations. An unusual oxygen concentration effect cannot be explained by the usual competition mechanism invoked in radiation chemistry and an energy transfer mechanism which possibly activates dissolved oxygen is suggested. Pulse radiolysis studies of aqueous solutions have been carried out in which the absorption of laser radiation during the pulse of X-rays occurs and is detected with a rise time in the nanosecond region. Studies on the gamma radiolysis of the cyclopentanonebenzene system have demonstrated a benzene triplet scavenging action which is in quantitative agreement with photolysis studies on the same system. A yield of G (benzene triplet )= 0.4 is reported.

• Research Organization: Univ. of Delaware, Newark, DE (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• NSA Number: NSA-20-038939
• OSTI ID: 4532431
• Report Number(s): NYO--2668-13
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
CHEMISTRY
Radiation Chemistry