Rp. Kraft et al., THIN-GATE FRONT SIDE-ILLUMINATED VERSUS BACK SIDE-ILLUMINATED CHARGE-COUPLED-DEVICES FOR X-RAY ASTRONOMY, The Astrophysical journal, 466(1), 1996, pp. 51-54
We present a comparison of the spectroscopic capabilities of a front s
ide-illuminated thin-gate CCD and the AXAF CCD Imaging Spectrometer ba
ck side-illuminated CCD for two simulated astrophysical observations b
elow 1 keV. The thin-gate CCD has superior energy resolution but infer
ior (although nonnegligible) quantum efficiency over this bandpass. We
show that the low-noise, thin-gate CCD design provides superior deter
mination of confidence intervals for spectroscopy below 1 keV.