A high resolution, fast neutron, time-of-flight spectrometer used for neutron energies between about several hundred kiloelectron volts and 30 .MeV is described. A 1 nsec neutron pulse occurring with a repetition rate of 20 kc is obtained with a novel "bunching deflection" system operating on the internal beam of the fixed energy Karlsruhe isochronous cyclotron. By the timing of the neutrons over a 57 m f1ight path aresolution of 0.025 nsec/ni at optimum was obtained. Detector counts are accumulated in a 2X8000 channel time analyzer system with 1 nsec channel width. A planned f1ight path of 180 m and an increase of the repetition rate from 20 kc at present to 200 kc is expected to provide further improvements of the spectrometer.

No abstract

No abstract

No abstract

No abstract