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Finite electron range and its implications for superconducting photon detectors

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Volume
169
Identifiers
DOI: 10.1016/0921-4526(91)90265-g
Disciplines
  • Physics

Abstract

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.

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