Kinetic energy and fragment mass distributions for /sup 240/Pu(s. f. ), /sup 239/Pu(n/sub th/,f), and /sup 240/Pu(. gamma. ,f)

Journal Article · Fri May 01 04:00:00 EDT 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.2104· OSTI ID:6436400

Thierens, H; De Clercq, A; Jacobs, E; De Frenne, D; D'hondt, P; De Gelder, P; Deruytter, A J

Energy correlation measurements were performed for /sup 240/Pu(s.f.), /sup 239/Pu(n/sub th/,f), and the photofission of /sup 240/Pu with 12-, 15-, 20-, and 30-MeV bremsstrahlung. The photofission cross section for /sup 240/Pu was determined up to 30 MeV, which permitted the calculation of the average excitation energy of the compound nucleus. The average total kinetic energy of the fragments for /sup 240/Pu(s.f.) was found to be 1.2 +- 0.5 MeV higher than for /sup 239/Pu(n/sub th/,f). A decrease of , with , d/d = -0.37 +- 0.08, is observed in the photofission of /sup 240/Pu. Fragment shell effects are present in the kinetic energy and mass distributions for /sup 240/Pu(s.f.). Changes in the measured distributions with increasing excitation energy of the compound nucleus /sup 240/Pu are discussed in the framework of the scission point model of Wilkins et al.

• Research Organization: Nuclear Physics Laboratory, Proeftuinstraat 86, B-9000 Gent, Belgium
• OSTI ID: 6436400
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

652023 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Energy Levels & Transitions-- (-1987)
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
ANGULAR MOMENTUM
BARYON REACTIONS
BREMSSTRAHLUNG
CROSS SECTIONS
DATA
DECAY
DETECTION
ELECTROMAGNETIC RADIATION
ENERGY
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION
FISSION FRAGMENT DETECTION
HADRON REACTIONS
HEAVY NUCLEI
INFORMATION
ISOTOPES
KINETIC ENERGY
MASS SPECTRA
MEV RANGE
MEV RANGE 10-100
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
PHOTOFISSION
PHOTONUCLEAR REACTIONS
PLUTONIUM 239 TARGET
PLUTONIUM 240
PLUTONIUM 240 TARGET
PLUTONIUM ISOTOPES
RADIATION DETECTION
RADIATIONS
RADIOISOTOPES
SPECTRA
SPIN
SPONTANEOUS FISSION
TARGETS
THERMAL FISSION
YEARS LIVING RADIOISOTOPES