1. Finite electron range and its implications for superconducting photon detectors
- Author
-
Deborah Van Vechten, Kent S. Wood, and Michael M. Lovellette
- Subjects
Superconductivity ,Physics ,Range (particle radiation) ,Photon ,Collision cascade ,Biasing ,Electron ,Electrical and Electronic Engineering ,Atomic physics ,Photoelectric effect ,Condensed Matter Physics ,Absorption (electromagnetic radiation) ,Electronic, Optical and Magnetic Materials - Abstract
We consider global transitions from superconducting to normal state of small grains induced by the absorption of energetic (1- 100 keV) photons. Initially the energy is transferred to a single photoelectrons, which loses the energy as it scatters inelastically. To measure the energy of the photon, this collision cascade must be contained within the grain. Reconciling this requirement with the requirement that the dispersed energy must suffice to warm the grain above the transition temperature, leads to estimate of grain sizes and effective operating range of photon energies for various materials and T and H biasing conditions.
- Published
- 1991
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