Measurement of the /SUP 242m/ Am neutron fission cross section

Journal Article · Sun May 01 04:00:00 EDT 1983 · Nucl. Sci. Eng.; (United States)

OSTI ID:5576273

Dabbs, J W.T.; Bemis, C E; Raman, S

The fission cross section of /SUP 242m/ Am has been measured from 0.005 eV to 20 MeV using time-of-flight techniques at the Oak Ridge Electron Linear Accelerator. A hemispherical plate fission ionization chamber with five pairs of plates contained three deposits totaling 507 ..mu..g of /SUP 242m/ Am, one deposit of 168 ..mu..g /sup 235/U, and a ''weightless'' deposit of /sup 252/Cf, which served as a monitor of chamber performance. The fission of /sup 235/U, served as the cross-section standard for energies above 101 keV while /sup 6/Li(n,..cap alpha..), normalized to /sup 235/U fission in the 7.8- to 11.0-eV interval, served as a shape standard below 101 keV. Approximately 360 h of data were obtained at a flight path distance of 9.1 m, primarily with 40-ns bursts. Particular attention was paid to correction of backgrounds, especially inscattered-neutron-induced events. The fission resonance integral was found to be 1800 + or - 65 b.

• Research Organization: Oak Ridge National Laboratory, P.O. Box X, Oak Ridge, Tennessee 37830
• OSTI ID: 5576273
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 84:1; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 242
AMERICIUM 242 TARGET
AMERICIUM ISOTOPES
BACKGROUND RADIATION
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIFORNIUM 252 TARGET
CROSS SECTIONS
DATA
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
EV RANGE
EXPERIMENTAL DATA
FERMIONS
FISSION
FISSION CHAMBERS
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
INTEGRALS
IONIZATION CHAMBERS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KEV RANGE
LINEAR ACCELERATORS
LITHIUM 6 TARGET
MEAN FREE PATH
MEASURING INSTRUMENTS
MEASURING METHODS
MEV RANGE
NEUTRON DETECTORS
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-ODD NUCLEI
ORELA
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
RESONANCE INTEGRALS
TARGETS
TIME-OF-FLIGHT METHOD
URANIUM 235 TARGET