GB1209788A - Apparatus for producing and recording diffraction patterns - Google Patents
Apparatus for producing and recording diffraction patternsInfo
- Publication number
- GB1209788A GB1209788A GB5676267A GB5676267A GB1209788A GB 1209788 A GB1209788 A GB 1209788A GB 5676267 A GB5676267 A GB 5676267A GB 5676267 A GB5676267 A GB 5676267A GB 1209788 A GB1209788 A GB 1209788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detector
- image
- cathode
- produce
- phenomena
- 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
- G01N23/20—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 using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/207—Diffractometry using detectors, e.g. using a probe in a central position and one or more displaceable detectors in circumferential positions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
- H01J47/10—Spark counters
Abstract
1,209,788. X-ray diffraction apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. 14 Dec., 1967 [14 Dec., 1966], No. 56762/67. Heading H5R. In a diffraction apparatus a collimator 32 directs a beam of X or gamma radiation from source 30 towards a crystal 34 in holder 36; the undeviated beam is stopped by trap 40 from reaching the gas-type detector 20, but the diffracted beam, for example 42, impinges on a cathode member 24 of detector 20. The Xray or #-ray photon enters the space between cathode 24 and an auxiliary grid electrode 26, here electrons produced by the ionisation of the gas in the detector migrate towards and through the auxiliary electrode 26 and enter the space between the auxiliary electrode 26 and the anode 28. Between these electrodes, the potential is sufficient to produce avalanche phenomena, which phenomena produce in the gap an image of the diffraction pattern of the crystal which image is recorded photographically e.g. on camera 46 or electronically via an image intensifier and TV system (Fig. 3, not shown). For photographic recording, the potential between 26 and 28 is such as to produce sparks between the two electrodes, and the anode 28 may be transparent and/or coated a layer of a luminous substance having a persistence of one second, the spark pattern being photographed for example through transparent wall 25. Alternatively the voltage between 26 and 28 is selected to avoid the formation of sparks and the image due to the avalanche phenomena is projected on to the photocathode of an image intensifier and thence to a TV tube. The cathode of the detector e.g. 24 is preferably a beryllium window.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR87486A FR1526945A (en) | 1966-12-14 | 1966-12-14 | Apparatus for producing and recording diffraction patterns |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1209788A true GB1209788A (en) | 1970-10-21 |
Family
ID=8622446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5676267A Expired GB1209788A (en) | 1966-12-14 | 1967-12-14 | Apparatus for producing and recording diffraction patterns |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE707543A (en) |
CH (1) | CH483631A (en) |
DE (1) | DE1980983U (en) |
ES (1) | ES348250A1 (en) |
FR (1) | FR1526945A (en) |
GB (1) | GB1209788A (en) |
LU (1) | LU55044A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7432501B2 (en) | 2003-09-09 | 2008-10-07 | Council For The Central Laboratory Of The Research Councils | Ionising particle analyser enabling for example the separation of the fluorescent yield (FY) and the total electron yield (TEY) in EXAPS (extended X-ray absorption fine structure) measurements |
-
1966
- 1966-12-14 FR FR87486A patent/FR1526945A/en not_active Expired
-
1967
- 1967-12-01 CH CH1695867A patent/CH483631A/en not_active IP Right Cessation
- 1967-12-05 BE BE707543D patent/BE707543A/xx unknown
- 1967-12-07 LU LU55044D patent/LU55044A1/xx unknown
- 1967-12-13 DE DE1967C0016856 patent/DE1980983U/en not_active Expired
- 1967-12-14 GB GB5676267A patent/GB1209788A/en not_active Expired
- 1967-12-14 ES ES348250A patent/ES348250A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7432501B2 (en) | 2003-09-09 | 2008-10-07 | Council For The Central Laboratory Of The Research Councils | Ionising particle analyser enabling for example the separation of the fluorescent yield (FY) and the total electron yield (TEY) in EXAPS (extended X-ray absorption fine structure) measurements |
Also Published As
Publication number | Publication date |
---|---|
FR1526945A (en) | 1968-05-31 |
ES348250A1 (en) | 1969-06-16 |
CH483631A (en) | 1969-12-31 |
BE707543A (en) | 1968-04-16 |
LU55044A1 (en) | 1968-02-27 |
DE1980983U (en) | 1968-03-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |