Patent US3822382A successfully refreshed from Google Patents.
US3822382A
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US
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Apparatus for analyzing electron energy
Assignee: Jeol Ltd
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Filing: 1971-08-17
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Granted: 1974-07-02
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Expires: 1991-08-17
Abstract
Abstract An apparatus for analyzing electron energy comprises a means for producing an axially symmetrical magnetic field, means for disposing a specimen in said magnetic field, an X-ray source for irradiating the specimen to cause emission of electrons and means for analyzing energies of the electrons focused by the magnetic field.
Inventors
- 👤 H Koike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:38
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/44; H01J49/46; G; G01; G01N; G01N23/00; G01N23/22; G01N23/227; H01J35/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
An apparatus for analyzing electron energy comprising a means for producing a substantially axially symmetrical magnetic field, means for positioning a specimen in the magnetic field, an X-ray source for irradiating the specimen to cause emission of electrons, a means for analyzing energies of the electrons focused by the magnetic field, a baffle having an aperture placed between the specimen and means for analyzing energies of the electrons, and a constant D.C. voltage source connected with the baffle and said specimen, the potential of the said baffle being maintained at a negative potential with respect to the specimen.
Claim 2
Independent Claim
98 words
An apparatus for analyzing electron energy comprising a means for producing a substantially axially symmetrical magnetic field, means for positioning a specimen in the magnetic field, an X-ray source for irradiating the specimen to cause emission of electrons, a means for analyzing energies of the electrons focused by the magnetic field, a baffle having an aperture placed between the specimen and means for analyzing energies of the electrons, and a constant D.C. voltage source connected with the baffle and said specimen, the potential of the said baffle being maintained at a negative potential with respect to the specimen.
Claim 3
Dependent Claim
17 words
An apparatus according to claim 1, wherein an exciting coil produces the substantially axially symmetrical magnetic field.
Claim 4
Dependent Claim
17 words
An apparatus according to claim 1, wherein a permanent magnet produces the substantially axially symmetrical magnetic field.
Claim 5
Independent Claim
87 words
An apparatus for analyzing the electron energy comprising a means for producing a substantially axially symmetrical magnetic field, means for positioning a specimen in said magnetic field, an X-ray source for irradiating the specimen to cause emission of electrons, a means for detecting the said electrons focused by the magnetic field, a baffle having an aperture placed between the specimen and said means for detecting the said electrons, and a variable D.C. voltage source for varying the negative potential of the baffle with respect to said specimen.
Claim 6
Independent Claim
87 words
An apparatus for analyzing the electron energy comprising a means for producing a substantially axially symmetrical magnetic field, means for positioning a specimen in said magnetic field, an X-ray source for irradiating the specimen to cause emission of electrons, a means for detecting the said electrons focused by the magnetic field, a baffle having an aperture placed between the specimen and said means for detecting the said electrons, and a variable D.C. voltage source for varying the negative potential of the baffle with respect to said specimen.
Claim 7
Dependent Claim
17 words
An apparatus according to claim 4, wherein an exciting coil produces the substantially axially symmetrical magnetic field.
Claim 8
Dependent Claim
18 words
An apparatus according to claim 4, wherein a permanent magnet produces the said substantially axially symmetrical magnetic field.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |