Collection of Athermal Phonons into Doped Germanium Thermistors Using Quasiparticle Trapping

Authors

S. M. Grannan
Betty A. Young, Santa Clara UniversityFollow
Andrew E. Lange
S. Labov
Bernard Sadoulet
J. Emes
Eugene E. Haller

Document Type

Article

Publication Date

1995

Publisher

American Institute of Physics

Abstract

We have developed a low‐temperature particle detector that uses a novel quasiparticle trapping mechanism to funnel athermal phonon energy from an 80 mg Ge absorber into a 1.6 mg doped Ge thermistor via a superconducting Al film. We report on pulse height spectra obtained at 320 mK by scanning a ²⁴¹Am alpha source along the device, and show that up to 20% of the energy deposited in the Ge absorber by a 5.5 MeV alpha particle interaction can be collected into a thermistor via quasiparticle trapping. We show that this device is sensitive to the position of an alpha particle interaction in the Ge absorber for interaction distances of up to 5 mm from a quasiparticle trap.

Comments

Copyright © 1995 American Institute of Physics Publishing. Reprinted with permission.

Recommended Citation

Grannan, S. M., Young, B. A., Lange, A. E., Labov, S., Sadoulet, B., Emes, J., & Haller, E. E. (1995). Collection of athermal phonons into doped Ge thermistors using quasiparticle trapping. Journal of Applied Physics, 77(10), 4887–4891. https://doi.org/10.1063/1.359292