Experimental studies of (n, charged particle) cross sections, angular distributions and spectra with a magnetic quadrupole spectrometer
The charged-particle-producing reactions of 15-MeV neutrons with structural materials have been studied with a new type of spectrometer based around a magnetic quadrupole lens. Significant improvements in signal-to-background have permitted the detection of protons with energies as low as 800 keV. In several materials charged particles emitted with energies well below the Coulomb barrier contribute significantly to the total hydrogen and helium production cross sections. The production mechanism for these low-energy particles is second-chance emission in (n,n'p) and (n,n'..cap alpha..) reactions. At the high-energy end of the proton and alpha-particle spectra and for the entire deuteron spectra, non-statistical reaction mechanisms are indicated. Results for Al, Ti, V, Fe, Ni, Cu, Nb, and stainless steel 316 are compared with data from other experimental methods.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5140446
- Report Number(s):
- UCRL-80235; CONF-771233-2
- Country of Publication:
- United States
- Language:
- English
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALLOYS
ALUMINIUM 27 TARGET
ANGULAR DISTRIBUTION
BARYON REACTIONS
CHARGED PARTICLES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COPPER
CORROSION RESISTANT ALLOYS
CROSS SECTIONS
DISTRIBUTION
ELEMENTS
HADRON REACTIONS
HEAT RESISTING ALLOYS
IRON
IRON ALLOYS
IRON BASE ALLOYS
METALS
MOLYBDENUM ALLOYS
NEUTRON REACTIONS
NICKEL
NICKEL ALLOYS
NIOBIUM 93 TARGET
NUCLEAR REACTIONS
NUCLEON REACTIONS
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TARGETS
TITANIUM
TRANSITION ELEMENTS
VANADIUM 51 TARGET