GB1158329A - Measuring Method and Apparatus - Google Patents
Measuring Method and ApparatusInfo
- Publication number
- GB1158329A GB1158329A GB32798/66A GB3279866A GB1158329A GB 1158329 A GB1158329 A GB 1158329A GB 32798/66 A GB32798/66 A GB 32798/66A GB 3279866 A GB3279866 A GB 3279866A GB 1158329 A GB1158329 A GB 1158329A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiation
- layer
- detector
- backscattered
- source
- 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
- 230000005855 radiation Effects 0.000 abstract 6
- 230000005461 Bremsstrahlung Effects 0.000 abstract 1
- 230000001154 acute effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000009304 pastoral farming Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00
- G01G9/005—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00 using radiations, e.g. radioactive
-
- 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
- G01N23/02—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 transmitting the radiation through the material
- G01N23/06—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 transmitting the radiation through the material and measuring the absorption
- G01N23/16—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 transmitting the radiation through the material and measuring the absorption the material being a moving sheet or film
Landscapes
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
1,158,329. Backscatter gauge. INDUSTRIAL NUCLEONICS CORP. July 21, 1966 [July 22, 1965], No.32798/66. Heading G1A. In a backscatter gauge for determining the thickness, weight per unit area density of, or presence of a particular substance in, a layer 4 forming a cover on a layer 5 of a material having a different characteristic, the radiation source is arranged to produce collimated radiation at a very acute (almost grazing) angle to the surface of the cover layer 4 and a detector arrangement 47 views the backscattered radiation. One detector 32, having a collimator casing 34, is located to receive primarily radiation backscattered from cover layer 4 (from volume 16) and minimal backscattered radiation from backing layer 5. The other detector receives radiation backscattered from the backing layer 5 (volume 17). The sensitivity of the apparatus can thus be made independent of the nature or thickness of the backing layer 5, which in some cases may be liquid or gas. The source may be of y-radiation e.g. Cs 127 or alternatively a # or bremsstrahlung source, and the detectors ionization gauges or scintillation counters. The source and detector mountings are adjustable to obtain maximum response, but are fixed relative to one another and to the position of the surface of layer 4 during measurements. A scanning of the surface is obtained by movement of the sheet 15 or of the gauge itself. The detector outputs are submitted to a computer (37), which sums or takes the ratio of the signals, producing an indication on a meter (39) of the property of interest. Separate sources may be used for the detectors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47408065A | 1965-07-22 | 1965-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1158329A true GB1158329A (en) | 1969-07-16 |
Family
ID=23882110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32798/66A Expired GB1158329A (en) | 1965-07-22 | 1966-07-21 | Measuring Method and Apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1158329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393267A1 (en) * | 1977-06-03 | 1978-12-29 | Unit Process Assemblies | CONTINUOUS THICKNESS MEASURING DEVICE WITH RADIATION OF THE COATING OF A BAND OF SUBSTRATE |
-
1966
- 1966-07-21 GB GB32798/66A patent/GB1158329A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393267A1 (en) * | 1977-06-03 | 1978-12-29 | Unit Process Assemblies | CONTINUOUS THICKNESS MEASURING DEVICE WITH RADIATION OF THE COATING OF A BAND OF SUBSTRATE |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |