Neutron spectrometer employing two semiconductor counters in combination with a coincidence circuit for eliminating background
Abstract
Abstract A hydrogen rich foil is arranged at right angles to a beam of neutrons to be measured and emits protons which are interrupted and counted by a semiconductor barrier layer transmission counter (dE/dx-counter) and a semiconductor absorption or output counter (E-counter which count the protons and measure the energy, background being eliminated by a coincidence counter. Both the transmission counter and absorption counter consists of a checkerboard counter and the scattering foil is arranged substantially immediately against the transmission counter, the scattered protons being measured by means of the coincidence circuit not only according to their number and energy, but also according to their direction.
Inventors
- 👤 Albertus Cornelis Meijer
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |