GB1480347A - Measurement of temperature - Google Patents
Measurement of temperatureInfo
- Publication number
- GB1480347A GB1480347A GB5528073A GB5528073A GB1480347A GB 1480347 A GB1480347 A GB 1480347A GB 5528073 A GB5528073 A GB 5528073A GB 5528073 A GB5528073 A GB 5528073A GB 1480347 A GB1480347 A GB 1480347A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sensing element
- layer
- temperature
- source
- ssbauer
- 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
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters
- G21K1/12—Resonant absorbers or driving arrangements therefor, e.g. for Moessbauer-effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/30—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of the effect of a material on X-radiation, gamma radiation or particle radiation
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Radiation Pyrometers (AREA)
Abstract
1480347 Measuring temperature UNITED KINGDOM ATOMIC ENERGY AUTHORITY 27 Nov 1974 [28 Nov 1973] 55280/73 Heading G1A [Also in Division G6] Temperature of an object is measured by attaching thereto a sensing element consisting of a M÷ssbauer source, i.e. excited atoms of a radioactive element dispersed through a suitable matrix material, in juxta-position with a M÷ssbauer absorber, i.e. unexcited atoms of the daughter element of the excited atoms in the source dispersed in the same matrix material as that of the source, and monitoring the changes in the γ-ray flux from the sensing element. In a particular sensing element, the source comprises <SP>5 7</SP>CO and the absorber <SP>5 7</SP>Fe, both dispersed in a matrix of Pd or Rh. They may be in the form of foils of 0À001" thickness. In the manufacture of such an element a layer of <SP>5 7</SP>Fe is deposited electrolytically on to both sides of a Pd or Rh foil, the foil heated to allow diffusion of the <SP>5 7</SP>Fe into it, a layer of matrix material deposited on to one surface of the first foil, followed by a layer of <SP>5 7</SP>CO and final heating to diffuse the <SP>5 7</SP>CO into that second layer. In the measurement of a turbine blade temperature, the sensing element is mounted on to the rear face thereof and the γ-ray flux issuing from the absorber surface monitored via a window by a proportional counter. The M÷ssbauer fraction f, that fraction of γ-ray emission which passes through the lattice undisturbed by nuclear (lattice) recoil, is dependent on temperature and the intensity of the emitted γ-rays from the sensing element vanes monotonically therewith.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5528073A GB1480347A (en) | 1974-11-27 | 1974-11-27 | Measurement of temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5528073A GB1480347A (en) | 1974-11-27 | 1974-11-27 | Measurement of temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1480347A true GB1480347A (en) | 1977-07-20 |
Family
ID=10473466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5528073A Expired GB1480347A (en) | 1974-11-27 | 1974-11-27 | Measurement of temperature |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1480347A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118760A (en) * | 1982-04-20 | 1983-11-02 | Amersham Int Plc | Method of making radioactive sources |
| US5203632A (en) * | 1992-04-24 | 1993-04-20 | The United States Of America As Represented By The Secretary Of The Air Force | Gas turbine pyrometer filtering system |
| US7432505B2 (en) | 2006-05-04 | 2008-10-07 | Siemens Power Generation, Inc. | Infrared-based method and apparatus for online detection of cracks in steam turbine components |
| US7690840B2 (en) | 1999-12-22 | 2010-04-06 | Siemens Energy, Inc. | Method and apparatus for measuring on-line failure of turbine thermal barrier coatings |
-
1974
- 1974-11-27 GB GB5528073A patent/GB1480347A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118760A (en) * | 1982-04-20 | 1983-11-02 | Amersham Int Plc | Method of making radioactive sources |
| US5203632A (en) * | 1992-04-24 | 1993-04-20 | The United States Of America As Represented By The Secretary Of The Air Force | Gas turbine pyrometer filtering system |
| US7690840B2 (en) | 1999-12-22 | 2010-04-06 | Siemens Energy, Inc. | Method and apparatus for measuring on-line failure of turbine thermal barrier coatings |
| US7432505B2 (en) | 2006-05-04 | 2008-10-07 | Siemens Power Generation, Inc. | Infrared-based method and apparatus for online detection of cracks in steam turbine components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |