THE EFFECT OF S$sup 35$ BETA RADIATION ON THE ISOTOPIC EXCHANGE OF OXYGEN IN THE SYSTEM Na$sub 2$SO$sub 4$$sup 16$-O$sub 2$$sup 1$$sup 8$

Journal Article · Sun Aug 21 04:00:00 EDT 1960 · Doklady Akad. Nauk, S.S.S.R.

OSTI ID:4106296

Spitsyn, V I; Finikov, V G

The isotopic exchange of O/sup 18/ with NaSO/sub 4/ tagged with S/sup 35/ was measured at temperatures of 600 to 800 ts C with specific activities of 0.08, 0.50, 1.25, 1.58, 1.94, 10, and 25 mc of S/sup 35/ per gram of compound. The degree of exchange, the reaction rate, and the activation energy were obtained from the changes in composition of vapor phase vs. time. The incorporation of S/sup 35/ into Na/sub 2/SO4/sub /d to an increase in>i the rate of exchange of oxygen. There is a sharp increase in the exchange with a maximum at 1.5 mc/g. Then the rate of exchange dropped sharply at 2.0 mc/g and increased slowly as the specific activity was raised from 2.0 to 25 mc/g. The activation energy went through a minimum (4 kcal/mole) at a specific activity of 1 to 2 mc/g, and then rose so sharply as to indicate a change in the reaction mechanism wlth the use of the more intense radioactive sources. Data are presented which show that the rate of isotopic exchange is greater, the higher is the initial specific activity and the higher is the elapsed time after incorporatlng the S/sup 35/ in the Na/sub 2/SO/sub 4/. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-008833
• OSTI ID: 4106296
• Journal Information: Doklady Akad. Nauk, S.S.S.R., Journal Name: Doklady Akad. Nauk, S.S.S.R. Vol. Vol: 133
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ACTIVATION ENERGY
BETA PARTICLES
CHEMISTRY
ISOTOPIC EXCHANGE
MACHINE PARTS
MEASURED VALUES
MECHANICS
OXYGEN
RADIATION SOURCES
RADIATIONS
RADIOACTIVITY
REACTION KINETICS
SERVOMECHANISMS
SODIUM SULFATES
SULFUR 35
TEMPERATURE
VAPORS