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Tunable coherent soft X-rays

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3 Author(s)
Rosfjord, K.M. ; Center for X-Ray Opt., Univ. of California, Berkeley, CA, USA ; Yanwei Liu ; Attwood, David T.

A tunable, spatially and spectrally coherent soft X-ray undulator branchline at the Advanced Light Source (ALS) is under operation. Using the third harmonic from an 8-cm period undulator, this branch delivers coherent soft X-rays with photon energies ranging from 200 to 1000 eV. Here, the beamline layout and characterization are presented. The characterization includes measurements of available coherent photon flux as well as a series of double-pinhole experiments to measure spatial coherence in the focal plane.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:10 ,  Issue: 6 )