Characteristics of a parallel plate avalanche counter with thin film electrodes
Abstract
A small sized parallel plate avalanche counter (PPAC) consisting of 30 SIGMA g/sq cm polypropylene stretched film was made, and its characteristics as a time sensitive detector were examined with alpha particles from an Am-241 source. The correlation was obtained between breakdown voltage of PPAC and Townsend primary ionization coefficient and between pulse height distribution of avalanche electrons and time resolution as a function of the gas pressure. A relay circuit to minimize the damage of PPAC in breakdown of the gas was set, and its effectiveness was confirmed.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1980
- Bibcode:
- 1980STIN...8224478T
- Keywords:
-
- Electrodes;
- Electron Avalanche;
- Electron Counters;
- Parallel Plates;
- Polypropylene;
- Thin Films;
- Alpha Particles;
- Americium Isotopes;
- Gas Pressure;
- Ionization Coefficients;
- Time Functions;
- Townsend Avalanche;
- Instrumentation and Photography