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- W2023286114 abstract "We describe a space borne solar observatory, the Ultra High Resolution XUV Spectroheliograph (UHRXS), which has been selected by NASA for flight among the initial scientific instruments to be placed on the space station Freedom. The principal URRXS instruments are nine XUV multilayer Ritchey-Chretien Telescopes covering the spectral range from -70 to -350 A; each telescope is able to isolate line multiplets within a narrow wavelength interval which are excited over a narrow temperature range, providing full disk images of diagnostic quality covering structures in the solar atmosphere ranging in temperature from T .5O,OOO K (He II ). 304 A) to 20,000,000 K (Fe XXIV X 192 A). The XUV images will be recorded on high resolution 70 mm format film, allowing resolutions as high as 0. 1 arc second to be achieved for a 1.O field. The XUV images will be supplemented by; (i) full disk high resolution (O.1) far ultraviolet images in H I Ly a ( 1216 A) and C IV (X 1548/1550 A), (ii) full disk soft x-ray images in 4 bands in the interval ?X 6 -70 A and (iii) electronically recorded high resolution (;v&% >10,000) spectroheliograms in 2 XUV, 1 EUV (.'45O A to 1 100 A) and 2 FUV (-4 100 A to 1600 A) bands. The electronically recorded images will use the Multi-Anode Multi-Channel Array (MAMA) detector. We propose to utilize the resulting data sets to address fundamental problems related to the following solar phenomena: (i) the fine structure of the solar chromosphere/corona interface, (ii) the structure, energetics and evolution of high temperature coronal loops, (iii) the large scale structure and dynamics of the corona, including the solar wind interface, the magnetic filed, and coronal mass ejections, and (iv) solar flares, especially the pre-flare state, the impulsive release of energy, and the evolution of post-flare loops. Subject Terms: solar atmosphere, corona, soft x-ray (XUV), extreme ultraviolet (EUV), far ultraviolet (FUV), multilayer optics" @default.
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- W2023286114 date "1990-07-01" @default.
- W2023286114 modified "2023-09-23" @default.
- W2023286114 title "Ultrahigh resolution XUV spectroheliograph" @default.
- W2023286114 doi "https://doi.org/10.1117/12.19148" @default.
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