MOSSBAUER SPECTROMETER
First Claim
1. A Mossbauer spectrometer, comprising:
- a sample stage for holding a sample containing a target substance under Mossbauer spectrometry;
γ
-ray irradiating means, having a γ
-ray source for supplying measurement γ
rays having a predetermined energy and used for spectrometry, for irradiating the sample with the measurement γ
rays along a predetermined irradiation axis;
converging means, placed between the γ
-ray irradiating means and the sample stage, for irradiating the sample with the measurement γ
rays in a converging manner;
electron detecting means, placed between the converging means and the sample stage, having an opening through which the measurement γ
rays from the converging means are passed, and configured so that a surface on a side of the sample stage is used as an electron incident surface, for detecting internal conversion electrons emitted from the target substance in the sample in which the measurement γ
rays are absorbed in resonance by the Mossbauer effect;
irradiation position moving means for two-dimensionally moving an irradiation position of the measurement γ
rays with respect to the sample within a plane perpendicular to the irradiation axis; and
energy selecting voltage applying means for selecting energy of the electrons detected by the electron detecting means, out of the electrons from the sample, by applying an energy selecting voltage to the electron incident surface of the electron detecting means so that a potential of the electron incident surface is a negative potential with respect to the sample on the sample stage.
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Accused Products
Abstract
A Mossbauer spectrometer 1A uses a configuration including: a stage 10 for holding a sample S; a γ-ray irradiating unit 15 for supplying measurement γ rays; γ-ray converging unit 18 for irradiating the sample S with the measurement γ rays in a converging manner; an electron detector 20, having an opening through which the measurement γ rays are passed and being configured so that a surface on a side of the stage 10 is used as an electron incident surface, for detecting internal conversion electrons from the target substance in the sample S in which the measurement γ rays are absorbed in resonance; an irradiation position moving unit for two-dimensionally moving an irradiation position of the measurement γ rays with respect to the sample S within an XY plane; and an energy selecting voltage applying unit for selecting energy of the electrons detected by the electron detector 20 by applying voltage to the electron incident surface of the electron detector 20 so that a potential of the electron incident surface is a negative potential with respect to the sample S. Thereby, a Mossbauer spectrometer capable of acquiring information of a microstructure about a target substance in a sample is realized.
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Citations
6 Claims
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1. A Mossbauer spectrometer, comprising:
-
a sample stage for holding a sample containing a target substance under Mossbauer spectrometry; γ
-ray irradiating means, having a γ
-ray source for supplying measurement γ
rays having a predetermined energy and used for spectrometry, for irradiating the sample with the measurement γ
rays along a predetermined irradiation axis;converging means, placed between the γ
-ray irradiating means and the sample stage, for irradiating the sample with the measurement γ
rays in a converging manner;electron detecting means, placed between the converging means and the sample stage, having an opening through which the measurement γ
rays from the converging means are passed, and configured so that a surface on a side of the sample stage is used as an electron incident surface, for detecting internal conversion electrons emitted from the target substance in the sample in which the measurement γ
rays are absorbed in resonance by the Mossbauer effect;irradiation position moving means for two-dimensionally moving an irradiation position of the measurement γ
rays with respect to the sample within a plane perpendicular to the irradiation axis; andenergy selecting voltage applying means for selecting energy of the electrons detected by the electron detecting means, out of the electrons from the sample, by applying an energy selecting voltage to the electron incident surface of the electron detecting means so that a potential of the electron incident surface is a negative potential with respect to the sample on the sample stage. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification