from 17 to 150 nm (Photo-ionisation occurs only at wavelengths up to 102 nm.) during the
extended solar activity minimum.
PUBLICATION(S)
Thuillier MG, Bolsee D, Schmidtke G, et al. The solar irradiance spectrum at solar activity
minimum between solar cycles 23 and 24. Solar Physics. June 2014;289(6):1931-1958. doi:
10.1007/s11207-013-0461-y.
Nikutowski B, Brunner R, Erhardt C, Knecht S, Schmidtke G. Distinct EUV minimum of the solar
irradiance (16-40 nm) observed by SolACES spectrometers onboard the International Space
Station (ISS) in August/September 2009. Advances in Space Research. 2011;48(5):899-903. doi:
10.1016/j.asr.2011.05.002.
This investigation is ongoing and additional results are pending publication.