Low-energy inverse photoemission spectroscopy using a high-resolution grating spectrometer in the near ultraviolet range

YOSHIDA, Hiroyuki

吉田, 弘幸

[Abstract] An inverse photoemission spectroscopy (IPES) apparatus using a Czerny-Turner grating spectrometer is demonstrated. Previous IPES instruments based on grating spectrometers used a concave grating and operated in the vacuum ultraviolet range. The reflectance of such gratings is lower than 20% and the aberration cannot be finely corrected leading to an energy resolution of up to 0.1 eV. In the present study, employing the low energy IPES regime [H. Yoshida, Chem. Phys. Lett. 539–540, 180 (2012)], incident electrons with a kinetic energy below 5 eV are used, while photon emission in the range of between 250 and 370 nm is analyzed with a 10-cm Czerny-Turner grating spectrometer. The signal intensity is at least 30 times higher than the previous apparatus. The resolution of photon detection is set at 0.07 eV though the ultimate resolution is one order of magnitude higher. The experiment is performed both by sweeping the electron energy (isochromat mode) and by simultaneously analyzing the photon of whole wavelength range (tunable photon energy mode).

https://opac.ll.chiba-u.jp/da/curator/900120844/

https://opac.ll.chiba-u.jp/da/curator/900120844/RSINAK_84_103901(2013).pdf

AIP Publishing

学術雑誌論文

Review of Scientific Instruments

84

10

103901

2013

10.1063/1.4822119

publisher

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Review of Scientific Instruments 84, 103901 (2013) and may be found at https://doi.org/10.1063/1.4822119 .