Responses of single superheated superconducting tin granules to applied magnetic field above the superheating field and to alpha-ray irradiations in varied energy
Abstract
The responses of superheated superconducting granules (SSGs) of tin to a magnetic field are assessed to determine the properties resulting from increased temperature in a granule or from the imposition of an additional external field. The granules measure 145-250 micron in diameter, and are subjected to a magnetic field and to alpha-ray irradiation ranging from 4.7 to 0.8 MeV. Transition time is measured, phase-transition fields are found, and the output signals are examined. The shapes of output signals are described as it flips when the magnetic field is gradually increased. The effect of local heating is found to be dominant, and the dominance is highly evident in the case of the alpha-ray irradiation. The results are used to construct a prototype detector with a one-layer target and four readout channels.
- Publication:
-
Low temperature Detectors for Neutrinos and Dark Matter III
- Pub Date:
- 1990
- Bibcode:
- 1990ltdn.work...61E
- Keywords:
-
- Alpha Particles;
- Granular Materials;
- Magnetic Effects;
- Metal Particles;
- Radiation Counters;
- Superconductors;
- Superheating;
- Tin;
- Energy Transfer;
- Phase Transformations;
- Radiant Flux Density;
- Instrumentation and Photography