Inelastic X-Ray Scattering - University of Illinois at Urbana-Champaign
Inelastic X-Ray Scattering - University of Illinois at Urbana-Champaign
Inelastic X-Ray Scattering - University of Illinois at Urbana-Champaign
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Instrument<strong>at</strong>ion: Overviewkk 2Requirements / Challenges• Cross section small: only 1 in 10 8 photons are inelasticallysc<strong>at</strong>tered –high flux needed2 • Very high resolving power needed. 2 meV / 20 keV = 10 ‐7k ik kq = k 1 – k 2• Must be able to tune energy; both 1 and 2 for RIXS• Broad angular acceptance required for enough signalBacksc<strong>at</strong>teringanalyzerMonochrom<strong>at</strong>icbeamWhite beam from APS undul<strong>at</strong>orsc<strong>at</strong>tering angleSpecimen
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