Large area and high-pressure GPSC/MSGC for space solar X-ray spectrometry

N. F. C. Mendes*, R. M. Curado da Silva, Matilde T. D. Castanheira, J. F. C. A. Veloso, D. S. A. P. Freitas, C. A. N. Conde, Fei Wei, Huaan Lin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The study of solar X-ray emissions can be very useful to predict and prevent the undesirable consequences of charged particles generated by solar flares on Earth, since charged particles take about 20 to 40 hours to reach Earth, while X-rays that are simultaneously emitted by the same solar flares only take about 8 minutes. Herein, we present a large area window (20 cm 2) and high-pressure (up to 5 atm) hybrid Gas Proportional Scintillation Counter/Microstrip Gas Chamber (GPSC/MSGC) for a satellite borne experiment to study solar flare X-ray emissions in the energy range between 20 keV and 80 keV. Xenon filled GPSC/MSGC s are low production cost and low power consumption detectors that provide large detection areas, room temperature operation and optimal energy resolution for solar X-ray observations. Therefore, the performances of a laboratory prototype designed to study solar X-rays was analysed. Namely the energy resolution as a function of the Xe pressure (1 atm to 5 atm), since for energies above 60 keV the gas pressure is a critical parameter to detection efficiency. The results obtained for the energy resolution dependence with the gas pressure (about 6.5% up to 4 atm) will be presented and discussed.

Original languageEnglish
Title of host publication2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference
Number of pages4
Publication statusPublished - 2005
Externally publishedYes
EventNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
Duration: 23 Oct 200529 Oct 2005

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863


ConferenceNuclear Science Symposium Conference Record, 2005 IEEE
Country/TerritoryPuerto Rico


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