Journal of Low Temperature Physics

, Volume 151, Issue 1, pp 424–429

Studies of Thermal Diffusion in Planar Absorber Designs for the Micro-X Rocket

  • E. Figueroa-Feliciano
  • T. Saab
  • P. M. Rivera-Ortiz
  • S. R. Bandler
  • N. Iyomoto
  • R. L. Kelley
  • C. A. Kilbourne
  • F. S. Porter
  • S. J. Smith
Article

DOI: 10.1007/s10909-007-9667-4

Cite this article as:
Figueroa-Feliciano, E., Saab, T., Rivera-Ortiz, P.M. et al. J Low Temp Phys (2008) 151: 424. doi:10.1007/s10909-007-9667-4

Abstract

We have studied a potential design for a transition-edge sensor (TES) microcalorimeter array for the Micro-X High Resolution Microcalorimeter X-ray Imaging Rocket. Diffusion simulations of a design that places a small TES in the center of the pixel with a large in-plane absorber around the TES demonstrate that with high-quality gold films (RRR >6) 2 eV resolution is attainable in a 700 μm pixel, meeting the Micro-X requirement. X-ray hits directly on the TES, however, create a non-gaussian high energy tail to the device response. This high energy tail contains 5% of incident photons and cannot be removed by lowering the optimal filter bandwidth.

Keywords

TESMicrocalorimeterMicro-XDiffusionPosition dependence

PACS

66.30.Xj95.55.Ka

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • E. Figueroa-Feliciano
    • 1
  • T. Saab
    • 3
  • P. M. Rivera-Ortiz
    • 2
  • S. R. Bandler
    • 4
  • N. Iyomoto
    • 4
  • R. L. Kelley
    • 4
  • C. A. Kilbourne
    • 4
  • F. S. Porter
    • 4
  • S. J. Smith
    • 4
  1. 1.Department of PhysicsMassachusetts Institute of TechnologyCambridgeUSA
  2. 2.Department of Mechanical EngineeringUniversity of Puerto RicoMayagüezPuerto Rico
  3. 3.Department of PhysicsUniversity of FloridaGainesvilleUSA
  4. 4.X-Ray Astrophysics LaboratoryNASA Goddard Space Flight CenterGreenbeltUSA