Reactions of yttrium polonide and polonium dioxide with tantalum and ammonium iodide vapors

Journal Article · · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6549048

Abakumov, A S; Malyshev, M L

It has been proved that yttrium polonide and polonium dioxide react with tantalum pentaiodide and ammonium iodide. It has been shown tensimetrically that their reaction yields polonium tetraiodide which occurs in the vapor phase in the diiodide form. The temperature for the start of the yttrium polonide reaction with tantalum pentaiodide and ammonium iodide, which lies in the ranges 230-240 and 370-380/sup 0/C respectively under the experimental conditions, has been determined. The extent of reaction was 84-99.7% for tantalum pentaiodide and 90-99.4% for ammonium iodide. At 100/sup 0/C and on 2-h exposure, polonium dioxide reacts with tantalum pentaiodide and ammonium iodide, converting respectively 98 and 100% polonium into the iodide form.

• OSTI ID: 6549048
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 25:2; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
AMMONIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
KINETICS
OXIDES
OXYGEN COMPOUNDS
POLONIUM COMPOUNDS
POLONIUM OXIDES
REACTION KINETICS
TANTALUM COMPOUNDS
TANTALUM IODIDES
TRANSITION ELEMENT COMPOUNDS
YIELDS
YTTRIUM COMPOUNDS