Balloon-Borne Hard X-Ray Spectrometer Using CdTe Detectors |
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| Authors: | K Kobayashi S Tsuneta T Tamura K Kumagai Y Katsukawa M Kubo Y Sakamoto N Kohara T Yamagami Y Saito K Mori |
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| Institution: | (1) University of Tokyo, Tokyo, Japan;(2) National Astronomical Observatory of Japan, Tokyo, Japan;(3) Japan Aerospace Exploration Agency, Kanagawa, Japan;(4) ClearPulse Co., Tokyo, Japan |
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| Abstract: | Spectroscopic observation of solar flares in the hard X-ray energy range, particularly the 20 ∼ 100 keV region, is an invaluable
tool for investigating the flare mechanism. This paper describes the design and performance of a balloon-borne hard X-ray
spectrometer using CdTe detectors developed for solar flare observation. The instrument is a small balloon payload (gondola
weight 70 kg) with sixteen 10×10×0.5 mm CdTe detectors, designed for a 1-day flight at 41 km altitude. It observes in an energy
range of 20−120 keV and has an energy resolution of 3 keV at 60 keV. The second flight on 24 May 2002 succeeded in observing
a class M1.1 flare. |
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| Keywords: | X-ray detector Spectrometer CdTe Hard X-ray |
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