Method for pulse shape regulation and discrimination in a nuclear spectroscopy system
US5884234A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/17
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is based on a digital pulse sampling and detection technique which samples a nuclear pulse train at a constant frequency asynchronously with the actual pulses, which occur at random times. The shape of pulses representative of the interaction of nuclear particles or gamma-rays with a nuclear detector is analyzed to determine the pulse length. Nuclear particles or gamma-rays are detected. A signal is formed containing pulses representative of the particles or gamma-rays. The pulses are sampled at a constant frequency to form a digital image of the pulse train. The pulse length is determined by counting the number of pulses with a first number of consecutive samples above a threshold and by counting the number of pulses with a second number of consecutive samples above the threshold. A ratio of the first and second number of consecutive samples is obtained. The ratio is used to adjust the pulse length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.