NSLS-II Seminar

Part I: My graduate work focused on the systematic study of perturber critical point effects on the quasi-free electron energy in atomic and molecular supercritical fluids, which involved obtaining vacuum ultraviolet photoionization spectra at various electric fields for a myriad of dopant/perturber systems. I will show these experimental results and the theoretical modeling.

Part II: Since July 2009, I have been participating in the optical design of the XPD beamline. The beamline characteristics are studied theoretically and simulated using third party ray tracing softwares (e.g., SHADOW). I will present the results on the energy resolution, the beam size and the reflectivity of the bent Laue and Bragg crystals. I will then discuss the integration of the analytical theory results with the SHADOW ray tracing, which is used in the simulation of the sagittal bent double-Laue monochromator. Finally, I will talk about the combination of the monochromator and the vertical focusing optics (e.g., multilayered mirrors, bent crystals and CRLs).