28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Measurement of heat capacity of yttrium silicide (Y5Si3) in the ultra-low temperature range

Not scheduled
2h
JW Marriott Starr Pass Resort

JW Marriott Starr Pass Resort

Tucson, Arizona USA
Poster Presentation ICMC-14 - Cryogenic Materials Testing and Methods

Speaker

Krishna Prasai (California State University Bakersfield)

Description

Most chemical processes to extract the Ho-163 isotope and insert it into a detector absorber involve yttrium based compounds. Rather than using yttrium as an intermediate step in the isotope extraction procedure, the metal yttrium silicide (Y5Si3) was a possible candidate to use directly as absorber material. We measured the heat capacity of small Yttrium Silicide (Y5Si3) sample in the temperature range 90mK -300mK using bolometric technique, to confirm if it could be used as an absorber in the fabrication of microcalorimeters. We also measured its resistivity from room temperature to 90 mK four wire measurement technique. Our result indicated that the heat capacity of Y5Si3 is larger than gold (often used as absorber material) by more than a factor of five in the working temperature range of TES microcalorimeters. *This work was supported by NSF funding.*

Primary author

Krishna Prasai (California State University Bakersfield)

Co-authors

Dr Daniela Bagliani (Department of Physics, University of Genova & INFN Genova, Italy) Prof. Flavio Gatti (Department of Physics, University of Genova & INFN Genova, Italy) Prof. Massimiliano Galeazzi (Department of Physics, University of Miami, Coral Gables) Dr Pietro Manfrinetti (Department of Chemistry, University of Genova & CNR-SPIN, Genova, Italy) Mr Youara Uprety (Department of Physics, University of Miami, Coral Gables) Dr michele Biasiotti (Department of Physics, University of Genova & INFN Genova, Italy)

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