A neutron telescope and spectrometer for diagnostics of extended fusion plasmas

Details A neutron telescope and spectrometer for diagnostics of extended fusion plasmas A neutron telescope and spectrometer for diagnostics of extended fusion plasmas

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ntsd.rept.....e&link_type=abstract

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Physics

High Temperature Plasmas, Neutron Spectrometers, Nuclear Fusion, Plasma Diagnostics, Data Processing, Ion Temperature, Maxwell-Boltzmann Density Function, Neutron Scattering, Neutron Spectra, Proton Energy, Scintillation Counters, Time Of Flight Spectrometers, Velocity Distribution

Scientific paper

A method for measurement of the energy spectra of thermonuclear neutrons from a fusion plasma and of the spatial distribution of the emitted neutrons is proposed. It is based on (n,p) scattering in a hydrogeneous specimen. The method provides simultaneous recording of the recoil proton energy and the energy of the corresponding scattered neutron by means of time of flight. Calculations show that an energy resolution less than 2% for D-D plasmas and about 3% for D-T plasmas is feasible. These figures correspond to ion temperatures, which cause a Doppler broadening in the neutron energy, of 0.4 and 7.0 keV, respectively. Results indicate that space resolution of 15 cm can be obtained.

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