Physics
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9028826t&link_type=abstract
Unknown
Physics
Charged Particles, Elastic Scattering, Neutron Spectrometers, Optical Measurement, Energy Spectra, Kinetic Energy, Neutrons, Particle Collisions, Protons
Scientific paper
The conceptual framework is described for a new type of neutron spectrometer, based on the recently demonstrated principle of optical detection of charged-particle tracks in a gas. Whereas the elastic scattering of a neutron gives rise to the single track of a charged recoil particle, the reaction He-3(n,p)H-3 produces an event in which two tracks (those of the proton and triton) diverge from a common vertex at the capture site. The optical detection method, which allows direct visualization of tracks, could be used to distinguish between one- or two-pronged events. The measured total light output from an absorption event would be proportional to T(sub p) + T(sub t), the sum of the initial kinetic energies of the proton and triton. Independently of its incident direction, the energy of the absorbed neutron would be given by T = T(sub p) + T(sub t) - Q, where Q = 765 keV is the energy released by the reaction.
Gibson W. A.
Hamm R. N.
Hurst G. S.
Huston T. E.
Turner James E.
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