X-ray Analysis Cheat Sheet, Cheat Sheet of Chemistry

Download X-ray Analysis Cheat Sheet and more Cheat Sheet Chemistry in PDF only on Docsity! X-ray analysis Cheat Sheet keV to erg 1 keV = 1.602 × 10−9 erg Plank constant h = 6.626 × 10−27 erg s Exp time T sec Exp map (pix i,j) Eij cts photon−1 sec cm2 Exp map (src avg) ES = ∑ S Eij/ ∑ S 1 cts photon−1 sec cm2 ≡ Aeff T Effective area * Time Effective area Aeff = 340 cm2 (typical) Src counts CS Total cts in src reg cts Bkg counts CB Total cts in bkg reg cts Net counts CN = CS − CB ∑ S Eij∑ B Eij cts Photon flux fp = CN/ES photons cm−2 sec−1 Energy flux f = fp · ECF erg cm−2 sec−1 Energy band hν0, hν1 0.5, 8 keV Power law spectrum fν = kνα ≡ kν1−Γ erg cm−2 sec−1 Hz−1 Energy index α Typical = -0.7 Photon index Γ Typical = 1.7 Energy Conv Factor ECF = hν0 (ν1/ν0) α+1 − 1 (ν1/ν0)α − 1 α α + 1 erg photons−1 = 2.83 × 10−9 erg photons−1 (E=0.5-8 keV, Γ = 1.7) Redshift z Luminosity L = ∫ ν1 ν0 Lνdν erg = ∫ ν1/(1+z) ν0/(1+z) 4πd2 l · fνdν erg = 4πd2 l (1 + z)α+1 · f erg = Kcorr · 4πd2 l · f erg K correction Kcorr = (1 + z)Γ−2 Luminosity dist dl = (from cosmology calc) cm