Measurement of the background spectrum of a CdTe detector at balloon altitudes

Details Measurement of the background spectrum of a CdTe detector at balloon altitudes Measurement of the background spectrum of a CdTe detector at balloon altitudes

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004adspr..33.1741s&link_type=abstract

Advances in Space Research, Volume 33, Issue 10, p. 1741-1745.

Astronomy and Astrophysics

Astronomy

4

Hard X-Ray Detector, Astronomy, Cdte

Scientific paper

The CdTe and the CdZnTe detectors are considered to be promising detectors for the future of astronomical hard X-ray observations due to their high stopping power and high energy resolution. For the preparation of future experiments, we have performed a simple balloon experiment using a small CdTe detector (2 mm cubic) as a piggy-back mission in 2000. Its energy range was 20-140 keV band with an energy resolution of 3.0 keV at 60 keV. The balloon reached an altitude of 36.9 km, and then gradually descended. During the 10-h flight, we successfully observed the background spectrum. The flux of the background was ~1.5×10-2 s-1 cm-2 keV-1 at 50 keV, being comparable to those of the past observations measured by CdZnTe detectors. We also found that the count-rate increases as the atmospheric pressure increases. No apparent line emission was observed.

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