The Wide Band Spectrometer on the SOLAR-A

Details The Wide Band Spectrometer on the SOLAR-A The Wide Band Spectrometer on the SOLAR-A

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..136...69y&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 136, Nov. 1991, p. 69-88.

Physics

49

Broadband, Energy Bands, Gamma Rays, Solar Spectrometers, Solar X-Rays, X Ray Spectroscopy, Energetic Particles, High Energy Interactions, Japanese Space Program, Particle Acceleration, Plasma Heating

Scientific paper

Attention is given to the wideband spectrometer (WBS) on board the Solar-A spacecraft. The WBS consists of three kinds of spectrometers - soft X-ray spectrometer (SXS), hard X-ray spectrometer (HXS), and gamma-ray spectrometer (GRS) - and is designed to investigate plasma heating, high-energy particle acceleration, and interaction processes. The SXS has two proportional counters and each counter provides 128-channel pulse height data in the 2-30-keV range every 2 s and 2-channel pulse count data every 0.25 s. The HXS has a NaI scintillation detector and provides 32-channel pulse height data in the 20-400-keV range every 1 s and 2-channel pulse count data every 0.125 s. The SXS observations make it possible to study the thermal evolution of flare plasma by obtaining time series of electron temperatures and emission measures of hot plasma; the HXS observations allow the study of electron acceleration and heating mechanisms by obtaining time series of the electron spectrum; and the GRS observations make possible the investigation of the high-energy electron and ion acceleration and interaction processes by obtaining time series of electron and ion spectra.

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