Reaction cross sections on carbon for neutron energies from 11. 5 to 19 MeV
- Ruder Boskovic Inst., Zagreb (YU)
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, Branuschweig (DE)
This paper reports on neutron-induced reaction cross sections for carbon measured in the 11.5- to 19-MeV energy range. The response of an NE-213 scintillation detector is measured in steps of at least 0.5 MeV for monoenergetic neutrons, applying suitable time-of-flight techniques, and compared with Monte Carlo simulations. The total cross sections of all reactions with charged particles (except carbon recoil protons) in the exit channel are determined with respect to the n-p scattering cross section. In addition, the {sup 12}C(n,n{prime}3{alpha}) reaction is investigated for neutron energies of 11.9, 12.9, 14.0, 14.8, 17.0, and 19.0 MeV using the nuclear emulsion technique. As it is kinematically complete, this measurement yields the total and partial cross sections for the various channels of the {sup 12}C(n,n{prime}3{alpha}) reaction. The experimental data show deviations of up to {plus minus}25% from those recommended in ENDF/B-V, while a recent evaluation by Axton is partially confirmed. Reasonable agreement is found with most of the recent scattering experiments; thus, this data set represents a valuable constraint for further evaluations. The analysis performed, however, has shown that additional data from some partial reaction cross sections are needed.
- OSTI ID:
- 5071980
- Journal Information:
- Nuclear Science and Engineering; (United States), Vol. 107:1; ISSN 0029-5639
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON
NUCLEAR REACTIONS
CARBON 12 REACTIONS
NUCLEAR EMULSIONS
NEUTRONS
CORRELATIONS
CROSS SECTIONS
KEV RANGE 100-1000
MEV RANGE 10-100
SCINTILLATION COUNTERS
TIME-OF-FLIGHT METHOD
TOTAL CROSS SECTIONS
BARYONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
HADRONS
HEAVY ION REACTIONS
KEV RANGE
MEASURING INSTRUMENTS
MEV RANGE
NONMETALS
NUCLEONS
RADIATION DETECTORS
653003* - Nuclear Theory- Nuclear Reactions & Scattering
654003 - Radiation & Shielding Physics- Neutron Interactions with Matter