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Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..387...11s&link_type=abstract
Space technology and applications international forum (STAIF - 97). AIP Conference Proceedings, Volume 387, pp. 11-18 (1997).
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1
X- And Gamma-Ray Spectroscopy, Calorimeters, Conductors, Resistors, Cryogenics, Refrigerators, Low-Temperature Detectors, And Other Low-Temperature Equipment
Scientific paper
In our work following the invention of the x-ray calorimeter, we improved the resolution to 7.3 eV, at which point our emphasis changed from demonstration to application. Our recent calorimeter development effort has proceeded along two tracks, one for soft (<1 keV) x-rays and the other for broad band (0.5-12 keV) x-ray spectroscopy. We have achieved 10-15 eV resolution with 0.25 mm2 pixels with HgTe absorbers providing high quantum efficiency through 12 keV, and we have achieved 7-10 eV resolution with 1 mm2 pixels with HgTe absorbers providing high quantum efficiency through 1 keV. Our future calorimeter development will continue to be guided by the different demands of soft x-ray and hard x-ray band experiments. In the soft band, improvements to the existing technology should improve the uniformity of performance across an array and improve the spectral resolution, to perhaps as good as 2 eV. Major improvement in the hard band will require the development of alternative thermometers to replace the ion-implanted silicon thermistors now used. We will summarize the status of the technology and will report the results of our latest development efforts.
Finkbeiner Fred M.
Gendreau Keith Charles
Juda Michael
Kelley Richard L.
McCammon Dan
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