Investigation of influence of alpha irradiation on valence states of actinides. VIII. Reduction of berkelium (IV) in perchloric acid solutions

Journal Article · Mon Sep 01 04:00:00 EDT 1986 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6952030

Frolova, L M; Vasilev, V Y; Vitynutnev, V M

A spectrophotometric method has been used in studying the radiation-chemical behavior of berkelium (IV) in perchloric acid solutions with intense internal alpha-irradiation by curium244. It has been shown that the reduction of berkelium (IV) in perchloric acid solutions with a concentration up to 3 M follows a zero-order reaction rate law relative to the berkelium (IV) concentration. In more concentrated solutions of perchloric acid, the equation for the rate of the berkelium (IV) reduction reaction has the form d (Bk(IV))/dt=k/sub 0/ + k/sub 1/(BK(IV)). In all of the perchloric acid solutions that were investigate (1-7 M), K /SUP '/ /sub 0/ is weakly dependent on the acid concentration; k'/sub 1/ depends on the acid concentration to a greater degree. Both k'/sub 0/ and k'/sub 1/ depend on the dose rate in irradiation of the solution. With high concentrations of perchloric acid, products of radiolytic decomposition of perchlorate ions play a major role.

• OSTI ID: 6952030
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:1; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
ALPHA SOURCES
BERKELIUM
BERKELIUM 249
BERKELIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CURIUM 244
CURIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
DOSE RATES
ELEMENTS
EVEN-EVEN NUCLEI
HEAVY NUCLEI
HYDROGEN COMPOUNDS
INORGANIC ACIDS
ION SOURCES
IRRADIATION
ISOTOPES
KINETICS
METALS
NUCLEI
ODD-EVEN NUCLEI
OPACITY
OPTICAL PROPERTIES
PARTICLE SOURCES
PERCHLORIC ACID
PHYSICAL PROPERTIES
PURIFICATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATION SOURCES
RADIOISOTOPES
REACTION KINETICS
REDUCTION
SAMPLE PREPARATION
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
VALENCE
YEARS LIVING RADIOISOTOPES