GB1422330A - - Google Patents
Info
- Publication number
- GB1422330A GB1422330A GB3371175A GB3371175A GB1422330A GB 1422330 A GB1422330 A GB 1422330A GB 3371175 A GB3371175 A GB 3371175A GB 3371175 A GB3371175 A GB 3371175A GB 1422330 A GB1422330 A GB 1422330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- electron beam
- collimator
- ray
- glow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/076—X-ray fluorescence
Abstract
1422330 Electron microscopes SOC NATIONALE DES PETROLES D'AQUITAINE 29 Dec 1972 [29 Dec 1971] 33711/75 Divided out of 1422329 Heading H1D [Also in Division H5] Apparatus suitable for the method of X-ray spectrometric investigation of a sample described and claimed in Specification 1,422,329, in which the angle between an incident electron beam irradiating an extended area of the sample surface to excite X-rays, and the X-ray beam selected by the spectrometer collimator does not exceed 40 degrees, includes a glow discharge tube as the electron source. The arrangement of Fig. 4b includes a pair of similar glow tubes (one only shown in full) detachably mounted in a frame 26 one either side of a collimator 1. The spacing between the cathode 20 and the anode 21 is adjustable by sliding portion 22 within portion 25, and gas exit and entry ports 23 and 24 are provided. In Fig. 5 the glow tube has an annular aluminium cathode 2 and mesh grid anode 3, which surrounds a collimator 1; to prevent excessive irradiation at the centre of the irradiated area, the cathode emissivity may be reduced in the inward radial direction, either by forming the cathode of a succession of concentric annuli of differing materials, or by forming it of indented shape, Fig. 11 (and Fig. 10, not shown), and rotating it in use. In other arrangements the incident electron beam may be directed normal to the specimen and the X-ray beam may be inclined thereto; both the electron beam and the X-ray beam may be directed normal to the specimen by deflecting the electron beam by magnetic (Fig. 3a, not shown) or electrostatic means (Figs. 3b, 12 and 13, not shown); and intersecting incident beams may be employed to ensure that every point on the sample surface receives electrons from at least two different directions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7147291A FR2166540A5 (en) | 1971-12-29 | 1971-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1422330A true GB1422330A (en) | 1976-01-28 |
Family
ID=9088304
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6004272A Expired GB1422329A (en) | 1971-12-29 | 1972-12-29 | |
| GB3371175A Expired GB1422330A (en) | 1971-12-29 | 1972-12-29 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6004272A Expired GB1422329A (en) | 1971-12-29 | 1972-12-29 |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS4878996A (en) |
| AR (1) | AR194772A1 (en) |
| AT (1) | AT348801B (en) |
| AU (1) | AU470801B2 (en) |
| BE (1) | BE793444A (en) |
| BR (1) | BR7209163D0 (en) |
| CA (1) | CA994478A (en) |
| CH (1) | CH571718A5 (en) |
| CS (1) | CS177113B2 (en) |
| DD (1) | DD105664A5 (en) |
| DE (1) | DE2264192A1 (en) |
| ES (1) | ES410110A1 (en) |
| FR (1) | FR2166540A5 (en) |
| GB (2) | GB1422329A (en) |
| IL (1) | IL41187A (en) |
| IT (1) | IT972980B (en) |
| LU (1) | LU66757A1 (en) |
| NL (1) | NL7217760A (en) |
| OA (1) | OA04309A (en) |
| SE (1) | SE388941B (en) |
| ZA (1) | ZA729137B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0732725A2 (en) * | 1995-03-17 | 1996-09-18 | International Superconductivity Technology Center | Method for identifying surface atoms of solid sample and apparatus therefor |
| DE102015220754B3 (en) * | 2015-10-23 | 2017-02-09 | Siemens Healthcare Gmbh | Method and measuring device for determining the electrode spacing of x-ray tubes |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2415365A1 (en) * | 1978-01-24 | 1979-08-17 | Radiologie Cie Gle | DEVICE FOR REDUCING THE DIVERGENCE OF THE USEFUL BEAM OF AN X-RAY TUBE, AND THUS EQUIPPED TUBE |
| NL8603264A (en) * | 1986-12-23 | 1988-07-18 | Philips Nv | ROENTGEN TUBE WITH A RING-SHAPED FOCUS. |
-
0
- BE BE793444D patent/BE793444A/en unknown
-
1971
- 1971-12-29 FR FR7147291A patent/FR2166540A5/fr not_active Expired
-
1972
- 1972-12-27 SE SE7217014A patent/SE388941B/en unknown
- 1972-12-27 DD DD167916A patent/DD105664A5/xx unknown
- 1972-12-27 AR AR245867A patent/AR194772A1/en active
- 1972-12-27 LU LU66757A patent/LU66757A1/xx unknown
- 1972-12-27 BR BR9163/72A patent/BR7209163D0/en unknown
- 1972-12-27 IL IL41187A patent/IL41187A/en unknown
- 1972-12-28 OA OA54800A patent/OA04309A/en unknown
- 1972-12-28 NL NL7217760A patent/NL7217760A/xx not_active Application Discontinuation
- 1972-12-28 CH CH1893072A patent/CH571718A5/xx not_active IP Right Cessation
- 1972-12-28 JP JP48004309A patent/JPS4878996A/ja active Pending
- 1972-12-28 ZA ZA729137A patent/ZA729137B/en unknown
- 1972-12-28 IT IT33656/72A patent/IT972980B/en active
- 1972-12-28 ES ES410110A patent/ES410110A1/en not_active Expired
- 1972-12-28 CA CA160,015A patent/CA994478A/en not_active Expired
- 1972-12-29 CS CS9063A patent/CS177113B2/cs unknown
- 1972-12-29 AT AT1115872A patent/AT348801B/en not_active IP Right Cessation
- 1972-12-29 GB GB6004272A patent/GB1422329A/en not_active Expired
- 1972-12-29 DE DE2264192A patent/DE2264192A1/en active Pending
- 1972-12-29 GB GB3371175A patent/GB1422330A/en not_active Expired
- 1972-12-29 AU AU50590/72A patent/AU470801B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0732725A2 (en) * | 1995-03-17 | 1996-09-18 | International Superconductivity Technology Center | Method for identifying surface atoms of solid sample and apparatus therefor |
| EP0732725A3 (en) * | 1995-03-17 | 1997-12-29 | International Superconductivity Technology Center | Method for identifying surface atoms of solid sample and apparatus therefor |
| DE102015220754B3 (en) * | 2015-10-23 | 2017-02-09 | Siemens Healthcare Gmbh | Method and measuring device for determining the electrode spacing of x-ray tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| AT348801B (en) | 1979-03-12 |
| IL41187A0 (en) | 1973-02-28 |
| DD105664A5 (en) | 1974-05-05 |
| IT972980B (en) | 1974-05-31 |
| BE793444A (en) | 1973-04-16 |
| ATA1115872A (en) | 1978-07-15 |
| AU5059072A (en) | 1974-07-04 |
| GB1422329A (en) | 1976-01-28 |
| ES410110A1 (en) | 1975-12-16 |
| JPS4878996A (en) | 1973-10-23 |
| CS177113B2 (en) | 1977-07-29 |
| CH571718A5 (en) | 1976-01-15 |
| AR194772A1 (en) | 1973-08-14 |
| DE2264192A1 (en) | 1973-07-12 |
| IL41187A (en) | 1975-12-31 |
| CA994478A (en) | 1976-08-03 |
| OA04309A (en) | 1980-01-15 |
| SE388941B (en) | 1976-10-18 |
| FR2166540A5 (en) | 1973-08-17 |
| ZA729137B (en) | 1973-11-28 |
| LU66757A1 (en) | 1973-02-27 |
| NL7217760A (en) | 1973-07-03 |
| AU470801B2 (en) | 1976-04-01 |
| BR7209163D0 (en) | 1973-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |