Neutron capture cross-section ratios of /sup 240/Pu, /sup 242/Pu, /sup 238/U, and /sup 197/Au in the energy range from 10 to 90 keV

Journal Article · Thu Jun 01 00:00:00 EDT 1978 · Nucl. Sci. Eng.; (United States)

OSTI ID:6776598

Wisshak, K; Kaeppeler, F

The neutron capture cross sections of /sup 240/Pu and /sup 242/Pu were measured in the energy range from 10 to 90 keV. The capture cross sections of both /sup 197/Au and /sup 238/U were chosen as standards. Neutrons were produced via the /sup 7/Li(p,n) reaction with the Karlsruhe 3-MV pulsed Van de Graaff accelerator. Capture events were detected by a Moxon-Rae detector. The high neutron flux available at flight paths as short as approximately 10 cm offers a signal-to-background ratio one order of magnitude better than obtained in previous experiments. The cross section ratios could therefore be determined with a total statistical and systematic uncertainty of 4 to 10% for /sup 240/Pu and 6 to 10% for /sup 242/Pu. The results agree with previous data, while discrepancies to the evaluated files ENDF/B-IV and KEDAK 3 were found (up to 30% for /sup 240/Pu and up to 50% for /sup 242/Pu).

• Research Organization: Kernforschungszentrum, Karlsruhe, Ger.
• OSTI ID: 6776598
• Journal Information: Nucl. Sci. Eng.; (United States), Vol. 66:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
GOLD 197 TARGET
NEUTRON REACTIONS
CAPTURE
PLUTONIUM 240 TARGET
PLUTONIUM 242 TARGET
URANIUM 238 TARGET
CROSS SECTIONS
KEV RANGE 10-100
BARYON REACTIONS
ENERGY RANGE
HADRON REACTIONS
KEV RANGE
NUCLEAR REACTIONS
NUCLEON REACTIONS
TARGETS
652025* - Nuclear Properties & Reactions
A=220 & above
Experimental- Nuclear Reactions & Scattering- (-1987)