Excitation of the fission isomer /sup 242m/fAm by electrons of energy 17. 5--78 MeV

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6091423

Kuznetsov, V L; Lazareva, L E; Nedorezov, V G; Nikitina, N V; Sudov, A S

Cross sections for the reactions /sup 243/Am(e, n)z/sup 242m/fAm and total fission cross sections for /sup 243/Am(e, F) (sigma/sub e/f+sigma/sub e/,/sub n/f+...) have been measured in the electron-energy interval E/sub e/ = 17.5--78 MeV (delayed and prompt electrofission). For a comparison we simultaneously measured the yields of delayed and prompt photofission in bombardment by bremsstrahlung with maximum energies in the same energy range (the reactions /sup 243/Am(..gamma.., n)/sup 242m/fAm) and /sup 243/Am(..gamma.., F)). The data obtained are discussed in the framework of the virtual-photon method in the DWBA. It is shown that the excitation of the isomer occurs primarily as the result of dipole absorption of virtual photons; the contribution of the quadrupole component, as in the case of prompt electrofission of /sup 243/Am, does not exceed 10%.

• Research Organization: Institute of Nuclear Research, USSR Academy of Sciences
• OSTI ID: 6091423
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 42:1; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

652026* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 242
AMERICIUM 243 TARGET
AMERICIUM ISOTOPES
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DWBA
ELECTROFISSION
ELECTRON CAPTURE RADIOISOTOPES
ELECTRON REACTIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FAST FISSION
FISSION
FISSION ISOMERS
HADRON REACTIONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEPTON REACTIONS
MEV RANGE
MEV RANGE 10-100
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
ODD-ODD NUCLEI
PHOTOFISSION
PHOTONUCLEAR REACTIONS
RADIOISOTOPES
TARGETS