CA2139178C - Methode et appareil de classification de particules - Google Patents
Methode et appareil de classification de particules Download PDFInfo
- Publication number
- CA2139178C CA2139178C CA002139178A CA2139178A CA2139178C CA 2139178 C CA2139178 C CA 2139178C CA 002139178 A CA002139178 A CA 002139178A CA 2139178 A CA2139178 A CA 2139178A CA 2139178 C CA2139178 C CA 2139178C
- Authority
- CA
- Canada
- Prior art keywords
- pulse
- particle
- light
- particles
- electrical pulse
- 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 - Fee Related
Links
- 239000002245 particle Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 31
- 239000010432 diamond Substances 0.000 claims abstract description 31
- 238000001069 Raman spectroscopy Methods 0.000 claims abstract description 20
- 230000004913 activation Effects 0.000 claims abstract description 6
- 230000003595 spectral effect Effects 0.000 claims abstract description 6
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000001237 Raman spectrum Methods 0.000 abstract description 11
- 238000001748 luminescence spectrum Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000000191 radiation effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/87—Investigating jewels
Landscapes
- Health & Medical Sciences (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)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA93/9797 | 1993-12-30 | ||
| ZA939797 | 1993-12-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2139178A1 CA2139178A1 (fr) | 1995-07-01 |
| CA2139178C true CA2139178C (fr) | 2007-01-30 |
Family
ID=25583567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002139178A Expired - Fee Related CA2139178C (fr) | 1993-12-30 | 1994-12-28 | Methode et appareil de classification de particules |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU687470B2 (fr) |
| BR (1) | BR9405310A (fr) |
| CA (1) | CA2139178C (fr) |
| GB (1) | GB2285311B (fr) |
| RU (1) | RU94045262A (fr) |
| ZA (1) | ZA9410191B (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA955745B (en) * | 1994-08-19 | 1996-02-20 | De Beers Ind Diamond | Classification of particles according to their Raman response |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286170A (en) * | 1980-02-11 | 1981-08-25 | Samuel Moti | X-Ray face mask and chest shield device |
| DD254998A1 (de) * | 1985-07-26 | 1988-03-16 | Zeiss Jena Veb Carl | Anordnung zur bildlichen darstellung und analyse von fluoreszenzsignalen |
| GB2219080B (en) * | 1988-05-06 | 1992-11-04 | Gersan Ets | Identifying gemstones |
| US5275168A (en) * | 1992-03-31 | 1994-01-04 | The United States Of America As Represented By The Secretary Of The Navy | Time-gated imaging through dense-scattering materials using stimulated Raman amplification |
-
1994
- 1994-12-21 ZA ZA9410191A patent/ZA9410191B/xx unknown
- 1994-12-22 GB GB9425994A patent/GB2285311B/en not_active Expired - Fee Related
- 1994-12-28 CA CA002139178A patent/CA2139178C/fr not_active Expired - Fee Related
- 1994-12-29 BR BR9405310A patent/BR9405310A/pt not_active Application Discontinuation
- 1994-12-29 RU RU94045262/25A patent/RU94045262A/ru unknown
- 1994-12-30 AU AU81782/94A patent/AU687470B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| RU94045262A (ru) | 1996-10-20 |
| ZA9410191B (en) | 1995-08-25 |
| GB2285311B (en) | 1998-01-14 |
| CA2139178A1 (fr) | 1995-07-01 |
| AU8178294A (en) | 1995-07-06 |
| AU687470B2 (en) | 1998-02-26 |
| GB9425994D0 (en) | 1995-02-22 |
| GB2285311A (en) | 1995-07-05 |
| BR9405310A (pt) | 1995-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |