Sounding rocket measurement of the absolute solar EUV flux utilizing a silicon photodiode

Details Sounding rocket measurement of the absolute solar EUV flux utilizing a silicon photodiode Sounding rocket measurement of the absolute solar EUV flux utilizing a silicon photodiode

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.4291o&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, April 1, 1990, p. 4291-4295. Research supported by USAF and SDIO.

Computer Science

Sound

35

Extreme Ultraviolet Radiation, Rocket Sounding, Rocket-Borne Instruments, Solar Flux, Calibrating, Silicon Radiation Detectors, Solar Radiation

Scientific paper

A newly developed stable and high quantum efficiency silicon photodiode was used to obtain an accurate measurement of the integrated absolute magnitude of the solar extreme UV photon flux in the spectral region between 50 and 800 A. The adjusted daily 10.7-cm solar radio flux and sunspot number were 168.4 and 121, respectively. The unattenuated absolute value of the solar EUV flux at 1 AU in the specified wavelength region was 6.81 x 10 to the 10th photons/sq cm per s. Based on a nominal probable error of 7 percent for National Institute of Standards and Technology detector efficiency measurements in the 50- to 500-A region (5 percent on longer wavelength measurements between 500 and 1216 A), and based on experimental errors associated with the present rocket instrumentation and analysis, a conservative total error estimate of about 14 percent is assigned to the absolute integral solar flux obtained.

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