2005
DOI: 10.1117/12.615553
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An EUV spectrometer for mapping the heliopause and solar wind

Abstract: The He+ ion provides a valuable tracer of solar wind dynamics and the heliospheric boundary. Mapping the heliosphere in the 30.4 nm resonance line of the He+ ion with high spectral resolution will open access to the heliopause and reveal the three-dimensional flow of the solar wind. The emission fluxes are however faint, just a few mR, which poses a serious limitation on the mapping rate at high signal-to-noise ratio. We have developed a spectrometer configuration for narrowband EUV emission that offers import… Show more

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Cited by 3 publications
(6 citation statements)
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“…The normal-incidence Rowland mount, with the slit group located around off-plane angle β = 0 and the detector located at the first order diffraction angle, provides optimum performance for the intended application. 26 Curving the entrance slits ( Fig. 5; right) restores inherent resolution off-plane, while additional curving towards the grating with twice the curvature of the Rowland circle keeps the image sharply focused on a flat detector.…”
Section: Entrance Slitmentioning
confidence: 99%
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“…The normal-incidence Rowland mount, with the slit group located around off-plane angle β = 0 and the detector located at the first order diffraction angle, provides optimum performance for the intended application. 26 Curving the entrance slits ( Fig. 5; right) restores inherent resolution off-plane, while additional curving towards the grating with twice the curvature of the Rowland circle keeps the image sharply focused on a flat detector.…”
Section: Entrance Slitmentioning
confidence: 99%
“…25,26 We demonstrate here the performance of the proposed instrumental concept based on aperture coding with the following parameters: Figure 7. Top -the instrument is designed to detect the spectrum ∆λ of N bins (black).…”
Section: 4mentioning
confidence: 99%
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