THE EFFECT OF IRRADIATING THE SOLID PHASE ON THE RECRYSTALLIZATION KINETICS OF POTASSIUM SULFATE

Journal Article · Wed Nov 21 04:00:00 EST 1962 · Doklady Akademii Nauk SSSR (U.S.S.R.) English translation currently published in a number of subject-oriented journals

OSTI ID:4725424

Tagged K/sub 2/SO/sub 4/ crystals containing, constant amount of Ce/sup 141/ ( approximates 0.08 mcs/g) and a variable amount of S/sup 35/ (0, 0.5, and 50 mcs/g) were prepared by crystallizing K/sub 2/SO/sub 4/ from a Na/sub 2/SO/sub 4/ solution. The K/sub 2/SO/sub 4/ crystals were dried and sieved. One gram portions of the tagged K/sub 2/SO/sub 4/ salt (0.3 to 0.5 mm fraction) were added to 25 ml of saturated K/sub 2/SO/sub 4/ solution in 0.5 or 1.5N HNO/sub 3/. The mixture was then agitated at a temperature of 20 deg C. Samples of the supernatant liquid were taken at different time intervals in order to determine the Ce/sup 141/ and S/sup 35/ radiometrically. The recrystallization of K/sub 2/ SO/sub 4/ was faster in 1.5N HNO/sub 3/ than in 0.5N HNO/sub 3/, and in all cases, the K/sub 2/SO/sub 4/ with the higher specific activity of S/sup 35/ recrystallized more rapidly than the lowspecific-activity K/sub 2/SO/sub 4/ salt. The distribution of Ce in the K/sub 2/SO/sub 4/ changed from a logarithmic distribution with lambda = 16 to a linear distribution with D = 16 and 22 respectively, in the 1.5N HNO/sub 3/ and in the 0.5N HNO/sub 3/ solutions. The rate of redistribution of Ce between the high-specific-activity K/sub 2/SO/sub 4/ containing 50 mcs/g of S/sup 35/ and the saturated 0.5N HNO/sub 3/ was significartly greater than it -was with the lowspecific-activity K/sub 2/SO/sub 4/ precipitate. This type of behavior was not observed in the 1.5N HNO/sub 3/ solution. The effect of irradiation on the crystal lattice is to accelerate the recrystallization process. (TTT)

• Research Organization: Inst. of Physical Chemistry, Academy of Sciences, USSR
• NSA Number: NSA-17-008152
• OSTI ID: 4725424
• Journal Information: Doklady Akademii Nauk SSSR (U.S.S.R.) English translation currently published in a number of subject-oriented journals, Journal Name: Doklady Akademii Nauk SSSR (U.S.S.R.) English translation currently published in a number of subject-oriented journals Vol. Vol: 147; ISSN DANKA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
CERIUM 141
CHEMICAL REACTIONS
CHEMISTRY
CRYSTALS
DISTRIBUTION
EVAPORATION
FLUORINE
INFRARED RADIATION
LATTICES
NITRIC ACID
PHOTOCHEMISTRY
POTASSIUM SULFATES
PREPARATION
RADIATION DETECTORS
RADIATION EFFECTS
RADIOMETERS
RECRYSTALLIZATION
SODIUM SULFATES
SOLUTIONS
SPECTRA
SULFUR 35
XENON
XENON FLUORIDES