Inverse Photoelectron Spectroscopy Device
OwnerHiroyuki Yoshidainventor
Life of this patent
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Abstract
An inverse photoemission spectroscopy apparatus is configured to detect a light generated by the relaxation of electrons to an unoccupied state of a sample. The apparatus includes an electron source for generating electrons with which a sample is irradiated, a wavelength selector for extracting a light having a certain wavelength from the light generated in the sample, a photodetector for detecting the light extracted by the wavelength selector; and a focusing optics disposed between the sample and the photodetector. The electron source contains yttrium oxide as a thermionic emission material.
Claims7
An inverse photoemission spectroscopy apparatus for detecting a light generated by the relaxation of electrons to an unoccupied state of a sample, the apparatus comprising:
- an electron source for generating electrons with which a sample is irradiated;
- a wavelength selector for extracting a light having a certain wavelength from the light generated in the sample;
- a photodetector for detecting the light extracted by the wavelength selector;
- and
- a focusing optics disposed between the sample and the photodetector,
- wherein the electron source contains yttrium oxide as a thermionic emission material.
An inverse photoemission spectroscopy apparatus for detecting a light generated by the relaxation of electrons to an unoccupied state of a sample, the apparatus comprising:
- an electron source for generating electrons with which a sample is irradiated;
- a wavelength selector for extracting a light having a certain wavelength from the light generated in the sample;
- a photodetector for detecting the light extracted by the wavelength selector;
- and
- a focusing optics disposed between the sample and the photodetector,
- wherein the photodetector includes a photoelectric converter of the solar-blind type that is insusceptible or insensitive to a light having a wavelength of 400 nm or longer.
Dependencies are inferred from the claim text.