High-throughput Toroidal Grating Beamline for Photoelectron Spectroscopy at CAMD

O Kizilkaya; R W Jiles; M C Patterson; C A Thibodeaux; E D Poliakoff; P T Sprunger; R L Kurtz; E Morikawa

doi:10.1088/1742-6596/493/1/012024

High-throughput Toroidal Grating Beamline for Photoelectron Spectroscopy at CAMD

J Phys Conf Ser. 2014:493:012024. doi: 10.1088/1742-6596/493/1/012024.

Authors

O Kizilkaya¹, R W Jiles¹, M C Patterson², C A Thibodeaux³, E D Poliakoff³, P T Sprunger⁴, R L Kurtz⁴, E Morikawa¹

Affiliations

¹ Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, LA 70806, USA.
² Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA.
³ Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA.
⁴ Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, LA 70806, USA ; Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA.

Abstract

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 (~10¹⁴-10¹⁷ photons/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.

Grants and funding

P42 ES013648/ES/NIEHS NIH HHS/United States