High-throughput Toroidal Grating Beamline for Photoelectron Spectroscopy at CAMD

17th Pan-American Synchrotron Radiation Instrumentation Conference

Kizilkaya, O.^1 ; Jiles, R.W.^1 ; Patterson, M.C.^2 ; Thibodeaux, C.A.^3 ; Poliakoff, E.D.^3 ; Sprunger, P.T.^1,2 ; Kurtz, R.L.^1,2 ; Morikawa, E.^1

Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, LA 70806, United States^1

Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States^2

Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, United States^3

关键词: Angle resolved photoelectron spectroscopy;    Bending magnet radiation;    Combined energy;    Hemispherical analyzers;    High throughput;    Monochromatized synchrotron radiation;    Phenol adsorption;    Polycrystalline gold;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/493/1/012024/pdf
DOI  :  10.1088/1742-6596/493/1/012024

来源: IOP

【 摘 要 】

A 5 meter toroidal grating (5m-TGM) beamline has been commissioned to deliver 28 mrad of bending magnet radiation to an ultrahigh vacuum endstation chamber to facilitate angle resolved photoelectron spectroscopy. The 5m-TGM beamline is equipped with Au-coated gratings with 300, 600 and 1200 lines/mm providing monochromatized synchrotron radiation in the energy ranges 25-70 eV, 50-120 eV and 100-240 eV, respectively. The beamline delivers excellent flux (∼1014-1017photons/sec/100mA) and a combined energy resolution of 189 meV for the beamline (at 1.0 mm slit opening) and HA-50 hemispherical analyzer was obtained at the Fermi level of polycrystalline gold crystal. Our preliminary photoelectron spectroscopy results of phenol adsorption on TiO2(110) surface reveals the metal ion (Ti) oxidation.