GB833570A - Spectroscopic analysis - Google Patents
Spectroscopic analysisInfo
- Publication number
- GB833570A GB833570A GB935257A GB935257A GB833570A GB 833570 A GB833570 A GB 833570A GB 935257 A GB935257 A GB 935257A GB 935257 A GB935257 A GB 935257A GB 833570 A GB833570 A GB 833570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crucible
- sample
- vapour
- electron beam
- heating
- 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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
Landscapes
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
833,570. Discharge apparatus. HILGER, & WATTS Ltd. June 23, 1958 [March 21, 1957]. No. 9352/57. Class 39(1). [Also in Groups XI, XX and XXXV] In order to carry out a quantitative spectroscopic analysis of a substance (see Group XX) a sample 1 of the substance is introduced by a rod 3 into a vacuum chamber, and the rod is rotated so that the sample falls into crucible 7 in the lower part of the chamber. The temperature of the sample is then raised sufficiently to vaporize it, by heating the crucible with an electron beam from a hot cathode 9, this heating being controlled by a D.C. voltage from supply 10, which is fed with an error signal equal to the difference between the current corresponding to the temperature of the sample, as measured by a photo-electric pyrometer 11, 19, and a predetermined current corresponding to the requirements of the analysis in question. In order that the crucible surface shall have a high emissivity, it is provided with grooves 12, and the ratio of crucible diameter to the diameter of the surrounding radiation shields 8 is as low as practically possible. The vapour may be excited to emit the characteristic spectrum of the sample by heating the latter to a sufficiently high temperature. Alternatively, the vapour may be heated by a glow discharge between electrodes comprising the mouth of the crucible and of a diffuser 16, separated by an insulator 21, or by an electron beam directed on to the vapour. This electron beam may be reflected by a reflector electrode to produce standing electro-magnetic waves and plasma oscillations. Ultra high frequency oscillations may also act on the vapour stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB935257A GB833570A (en) | 1957-03-21 | 1957-03-21 | Spectroscopic analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB935257A GB833570A (en) | 1957-03-21 | 1957-03-21 | Spectroscopic analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB833570A true GB833570A (en) | 1960-04-27 |
Family
ID=9870287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB935257A Expired GB833570A (en) | 1957-03-21 | 1957-03-21 | Spectroscopic analysis |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB833570A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155664A (en) * | 1984-03-15 | 1985-09-25 | Prutec Ltd | Pyrolysis mass spectrometer |
| EP0396291A2 (en) * | 1989-04-29 | 1990-11-07 | FISONS plc | Apparatus and methods for optical emission spectroscopy |
| WO1994019675A1 (en) * | 1993-02-16 | 1994-09-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. | Method of measuring the composition of a melt vapour under vacuum |
| CN111855579A (en) * | 2019-04-28 | 2020-10-30 | 核工业理化工程研究院 | Alkali metal atom vapor absorption cell and spectral measurement method thereof |
-
1957
- 1957-03-21 GB GB935257A patent/GB833570A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155664A (en) * | 1984-03-15 | 1985-09-25 | Prutec Ltd | Pyrolysis mass spectrometer |
| EP0396291A2 (en) * | 1989-04-29 | 1990-11-07 | FISONS plc | Apparatus and methods for optical emission spectroscopy |
| EP0396291A3 (en) * | 1989-04-29 | 1991-07-31 | FISONS plc | Apparatus and methods for optical emission spectroscopy |
| US5285251A (en) * | 1989-04-29 | 1994-02-08 | Fisons Plc | Apparatus and methods for optical emission spectroscopy |
| WO1994019675A1 (en) * | 1993-02-16 | 1994-09-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. | Method of measuring the composition of a melt vapour under vacuum |
| CN111855579A (en) * | 2019-04-28 | 2020-10-30 | 核工业理化工程研究院 | Alkali metal atom vapor absorption cell and spectral measurement method thereof |
| CN111855579B (en) * | 2019-04-28 | 2024-06-11 | 核工业理化工程研究院 | Alkali metal atom vapor absorption tank and spectrum measurement method thereof |
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