FISSION OF U, Th, Bi AND Tl INDUCED BY HIGH ENERGY $gamma$-QUANTA

Journal Article · Sun Sep 01 04:00:00 EDT 1957 · Soviet Phys. JETP

OSTI ID:4311699

Minarik, E V; Novikov, V A

The photofission yields of U/sup 238/, Th/sup 232/, Bi/sup 209/, and Tl/ sup 2 have been measured with an ionization chamber at bremsstrahlung maximum energies from 80 to 250 Mev. The photofission effective cross sections computed by the total spectrum method rapidly increase from ~ 80 Mev and at 250 Mev reach a value of (220 plus or minus 80) mb for U, (80 plus or minus 30) mb for Th, (4.7 plus or minus 0.6) mb for Bi, and (1.6 plus or minus 0.2) mb for Tl. The energy dependence of the cross sections is the same for all four elements and, above 150 Mev, is similar to the energy dependence of the total cross section for photoproduction of neutral and charged mesons. (auth)

• Research Organization: Academy of Sciences, USSR
• NSA Number: NSA-12-004870
• OSTI ID: 4311699
• Journal Information: Soviet Phys. JETP, Journal Name: Soviet Phys. JETP Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BISMUTH 209
BREMSSTRAHLUNG
CHARGED PARTICLES
CROSS SECTIONS
ENERGY
ENERGY RANGE
GAMMA RADIATION
GAMMA SOURCES
IONIZATION CHAMBERS
MEASURED VALUES
MESONS
PHOTOFISSION
PHOTOPRODUCTION
PHYSICS
SPECTRA
THALLIUM 204
THALLIUM 206
THORIUM 232
URANIUM 238