Time of flight electron spectrometry on TIR using natural diamond detector

Natural diamond detectors (NDDs) being developed for the spectrometric appl ications in tokamak fusion plasma experiments, have been used also for fast x-ray flux measurements and time-of-flight (TOF) electron spectrometry in laser beam-target interaction experiments on the CO2 laser installation TIR (lambda = 10.6 mum, E = 80-95 J, tau similar to 14 ns). The magnetic field created in front of the detector provided separation of the signals induce d by x ray and electrons. The waveform of a NDD current response has been s hown to provide an information about energy spectra of the particles genera ted during laser beam-target interaction. Fast response time (<1 ns), low s ensitivity to visible light and x rays, high radiation resistance, and 100% charge collection efficiency of the type IIa diamond samples, make NDDs to be the optimal choice for TOF spectrometry of charged fusion products in i nertial confinement fusion experiments. (C) 2001 American Institute of Phys ics.