The effect of annealing on the RHESSI gamma-ray detectors
Abstract
The performance of nine RHESSI germanium detectors has been gradually deteriorating since its launch in 2002 because of radiation damage caused by passing through the Earth's radiation belts. To restore its former sensitivity, the spectrometer underwent an annealing procedure in November 2007. It, however, changed the RHESSI response and affected gamma-ray burst measurements, e.g., the hardness ratios and the spectral capabilities bellow approximately 100 keV.
- Publication:
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arXiv e-prints
- Pub Date:
- December 2009
- DOI:
- arXiv:
- arXiv:0912.3919
- Bibcode:
- 2009arXiv0912.3919V
- Keywords:
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- Astrophysics - Cosmology and Extragalactic Astrophysics;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 2009 Fermi Symposium - to appear in eConf Proceedings C091122