Journal
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Volume 23, Issue 3, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2012.2233258
Keywords
Bulk Sn absorber; positron annihilation spectroscopy; saturated current pulse; transition edge sensor
Funding
- Japan Science and Technology Agency (JST) under the project Development of Systems and Technology for Advanced Measurements and Analysis
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We present a high-resolution bulk tin-absorber coupled transition-edge sensor microcalorimeter to be applied for positron annihilation spectroscopy at 511 keV. We demonstrate an energy resolution of 526 eV at 662 keV from a Cs-137 source. This is the best energy resolution reported so far for any available detector at this photon energy. Further works are ongoing to reduce the mechanical vibrations of the cryogenic system in order to optimize the energy resolution of the detector.
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