Share Email Print

Proceedings Paper

High Resolution X-Ray Spectroscopy Using Microcalorimeters
Author(s): R L. Kelley; S S. Holt; G, M. Madejski; S H. Moseley; R. J. Schoelkopf; A. E. Szymkowiak; D. McCammon; B. Edwards; M. Juda; M. Skinner
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The use of microcalorimeters for high-resolution, high quantum efficiency, non-dispersive X-ray spectroscopy has been demonstrated over the past few years. During this time the energy resolution in the 1-10 keV band has improved from a value of-140 eV (FWHM), comparable to the best solid-state (Si/Li) detectors, to a value of-17 eV. We are presently working on improving the energy resolution by designing devices that have been optimized with respect to heat capacity, thermal conductance, X-ray absorbing material, thermistor geometry and thermistor implant concentration. In addition we have been working on the design of an integrated spectrometer consisting of a He4 cryostat containing an adiabatic demagnetization refrigerator, non-X-ray blocking filters and control and signal processing electronics. The essential components for such a system have been assembled at the University of Wisconsin and a similar system is being developed at Goddard. These systems will demonstrate the feasibility of this approach for space flight use, in particular for the NASA AXAF mission, and serve as research tools for further work in X-ray calorimetry. In this paper we give an overview of X-ray calorimetry, present the results of on-going X-ray tests, and discuss an approach for building an X-ray calorimeter spectrometer.

Paper Details

Date Published: 21 December 1988
PDF: 8 pages
Proc. SPIE 0982, X-Ray Instrumentation in Astronomy II, (21 December 1988); doi: 10.1117/12.948718
Show Author Affiliations
R L. Kelley, NASA/Goddard Space Flight Center (United States)
S S. Holt, NASA/Goddard Space Flight Center (United States)
G, M. Madejski, NASA/Goddard Space Flight Center (United States)
S H. Moseley, NASA/Goddard Space Flight Center (United States)
R. J. Schoelkopf, NASA/Goddard Space Flight Center (United States)
A. E. Szymkowiak, NASA/Goddard Space Flight Center (United States)
D. McCammon, University of Wisconsin (United States)
B. Edwards, University of Wisconsin (United States)
M. Juda, University of Wisconsin (United States)
M. Skinner, University of Wisconsin (United States)

Published in SPIE Proceedings Vol. 0982:
X-Ray Instrumentation in Astronomy II
Leon Golub, Editor(s)

© SPIE. Terms of Use
Back to Top