How the RHESSI gamma-ray burst measurements have been affected by the annealing procedure?
J. Ripa, P. Veres, C. Wigger
TL;DR
This paper examines how the annealing process in 2007 impacted RHESSI's gamma-ray burst measurements, revealing changes in detector response and spectral data quality.
Contribution
It provides an analysis of the effects of annealing on RHESSI's detector performance and gamma-ray burst measurement accuracy.
Findings
Annealing altered the detector response functions.
Spectral capabilities below ~100 keV were affected.
Hardness ratio measurements were impacted.
Abstract
The performance of the nine RHESSI germanium detectors has been gradually deteriorating since its launch in 2002 because of radiation damage. To restore its former sensitivity, the spectrometer underwent an annealing procedure in November 2007. However, it changed the RHESSI response and affected gamma-ray burst measurements, e.g., the hardness ratios and the spectral capabilities below ~100keV.
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Taxonomy
TopicsParticle Detector Development and Performance · Nuclear Physics and Applications · Radiation Detection and Scintillator Technologies