Portal de Periódicos da CAPES

Beamline for high-resolution angle-resolved photoemission at Saga Light Source

2005; Elsevier BV; Volume: 144-147; Linguagem: Inglês

10.1016/j.elspec.2005.01.184

1873-2526

Kazutoshi Takahashi, Yuji Kondo, Junpei Azuma, Masao Kamada,

Advanced Optical Sensing Technologies

A new beamline for high-resolution angle-resolved photoemission study on solids and surfaces has been constructed at BL13 of Saga Light Source. In order to realize high-resolution in a wide energy range, the monochromator system is composed of the grazing-incidence mount with two varied line spacing plane gratings (VLSPG) and the normal incidence mount with a multilayer-coated plane grating. Relatively, high photon flux and low higher-order light can be obtained using the multilayer-coated plane grating in the boundary region between grazing-incidence and normal-incidence mounts. It is found from ray-tracing simulations that resolving power better than 10,000 and photon flux of 1010–1012 photon/s can be obtained. A high-resolution photoemission system with a gated-detector and a mode-locked Ti:Sapphire laser with the regenerative amplifier is installed at the beamline. Using these systems, we can perform the time-resolved high-resolution photoemission study for various photo-excited phenomena and surface dynamics.