What is the correct Fe L23 X-ray absorption spectrum of magnetite?
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چکیده
منابع مشابه
An Fe Xxvi Absorption Line in the Persistent Spectrum of the Dipping Low Mass X-ray Binary 1a 1744−361
We report on Chandra X-ray Observatory (CXO) High-Energy Transmission Grating (HETG) spectra of the dipping Low Mass X-ray Binary (LMXB) 1A 1744−361 during its July 2008 outburst. We find that its persistent emission is well modeled by a blackbody (kT ∼ 1.0 keV) plus power-law (Γ ∼ 1.7) with an absorption edge at 7.6 keV. In the residuals of the combined spectrum we find a significant absorptio...
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Using the known properties and statistics of intervening quasar absorption systems, we calculate the cumulative absorption out to high redshifts at soft X-ray (E < 1 keV) energies. Although photoelectric absorption in quasar absorption systems provides a signiicant source of opacity at the lowest X-ray energies, the imprint of this absorption is not readily observable since it is generally mask...
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We observed the black hole candidate Cyg X-1 for 15 ks with the High-Energy Transmission Grating Spectrometer aboard the Chandra X-ray Observatory. The source was observed during a period of intense flaring activity, so it was about a factor of 2.5 brighter than usual, with a 0.5-10 keV (1-24 Å ) luminosity of 1.6×1037 erg s−1 (at a distance of 2.5 kpc). The spectrum of the source shows promine...
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A full set of calculations is presented for inner-shell n = 2 to 3 photoexcitation of the 16 iron charge states: Fe (Fe I) through Fe (Fe XVI). The blend of the numerous absorption lines arising from these excitations (mainly 2p 3d) forms an unresolved transition array (UTA), which has been recently identified as a prominent feature between 16 17 Å in the soft X-ray spectra of active galactic n...
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ژورنال
عنوان ژورنال: Journal of Electron Spectroscopy and Related Phenomena
سال: 2015
ISSN: 0368-2048
DOI: 10.1016/j.elspec.2014.12.005