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The neutron, gamma-ray, X-ray spectrometer (NGXS): A compact instrument for making combined measurements of neutrons, gamma-rays, and X-rays



AuthorLawrence, David; Feldman, William; Gold, Robert; Goldsten, John; McNutt, Ralph;
Keywordsparker solar probe; Solar Probe Plus
Abstract

The Neutron, Gamma ray, and X-ray Spectrometer (NGXS) is a compact instrument designed to detect neutrons, gamma-rays, and hard X-rays. The original goal of NGXS was to detect and characterize neutrons, gamma-rays, and X-rays from the Sun as part of the Solar Probe Plus mission in order to provide direct insight into particle acceleration, magnetic reconnection, and cross-field transport processes that take place near the Sun. Based on high-energy neutron detections from prompt solar flares, it is estimated that the NGXS would detect neutrons from 15 to 24 impulsive flares. The NGXS sensitivity to 2.2 MeV gamma rays would enable a detection of ̃50-60 impulsive flares. The NGXS is estimated to measure ̃120 counts/s for a GOES C1-type flare at 0.1 AU, which allows for a large dynamic range to detect both small and large flares.

Year of Publication2014
JournalActa Astronautica
Volume93
Number of Pages524-529
Section
Date Published01/2014
ISBN
URLhttps://linkinghub.elsevier.com/retrieve/pii/S009457651200255X
DOI10.1016/j.actaastro.2012.06.017