INTERNAL CONVERSION WITH PAIR FORMATION DURING THE DECAY OF As$sup 7$$sup 6$

Journal Article · Fri Feb 01 04:00:00 EST 1963 · Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.)

OSTI ID:4721746

Badalov, N B; Vasilenko, S S; Kaganskii, M G; Kaminskii, D L

As/sub 2/O/sub 3/ was irradiated with thermai neutrons, and mounted on an Al foil 5 thick for counting on a double-focusing spectrometer having an efficiency of 1.2% of 4 ceramic materia , and a resolution of ontrol migra- 1.2%. The area of the source was 10 x 30 mm, and its thickness was 2 to 3 mg cm/ sup -2/. The spectrum has a complex form due to internal conversion positrons with pair formation at transitions having energies of 1230, 1500, tions were not previously reported. The number of positrons per disintegration was found to be 1.1 x 10/sup -5/. The positron spectrum was resolved into its five component parts, and the energies and intensities of the positron components were determined. The multipolarities of the transitions were determined by comparing the calculated and experimental values of the pair conversion coefficient. The transitions at 1230, 1795 and 2115 kev are quadrupole transitions of type E2. (TTT)

• Research Organization: Ioffe Inst. of Physics and Tech., Leningrad
• NSA Number: NSA-17-026501
• OSTI ID: 4721746
• Journal Information: Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.), Journal Name: Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.) Vol. Vol: 27; ISSN IANFA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ARSENIC 76
ARSENIC OXIDES
DECAY
EFFICIENCY
ENERGY LEVELS
INTERNAL CONVERSION
IRRADIATION
PAIR PRODUCTION
PHYSICS
POSITRONS
RESOLUTION
SPECTRA
SPECTROMETERS
THERMAL NEUTRONS
TRANSITIONS