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Abstract

The setup and operating conditions of a griddled twin ionization chamber with sample change facility to study light particle properties in the 1 MeV region as described. Detailed studies of different grid geometry's in connection with the choice of an eligible counting gas mixture and the applied high voltage have been performed. Due to the high overall amplification of the small electrical chamber signals obtained from such low energy particles, special filters have been developed in order to increase the signal-to-noise ratio. Timing properties of the chamber signals are discussed in greater detail. Information available from chamber signals and encoding methods are elucidated by spectra of alpha particles created by 234, 235U spontaneous alpha decay. The detector permits the independent and simultaneous measurement of energy and angular distribution in particles in both sides of the chamber. Finally, preliminary results and related analysis methods will be presented for the investigation of the 10B(n, alpha, gamma) branching ratios.

Additional information

Authors: GOEPFERT A, IRMM, JRC-Geel (BE);HAMBSCH F J, IRMM, JRC-Geel (BE);BAX H, IRMM, JRC-Geel (BE)
Bibliographic Reference: Article: Nuclear Instruments and Methods in Physics Research A, (1999), 1-17
Record Number: 199911406 / Last updated on: 1999-10-01
Category: PUBLICATION
Original language: en
Available languages: en