DE8801431U1 - Device for rapid measurement of the temporal change of the radiation intensity of a radiator - Google Patents
Device for rapid measurement of the temporal change of the radiation intensity of a radiatorInfo
- Publication number
- DE8801431U1 DE8801431U1 DE8801431U DE8801431U DE8801431U1 DE 8801431 U1 DE8801431 U1 DE 8801431U1 DE 8801431 U DE8801431 U DE 8801431U DE 8801431 U DE8801431 U DE 8801431U DE 8801431 U1 DE8801431 U1 DE 8801431U1
- Authority
- DE
- Germany
- Prior art keywords
- radiation
- radiator
- detector
- container
- temporal change
- 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 title claims description 16
- 230000002123 temporal effect Effects 0.000 title claims description 3
- 238000005259 measurement Methods 0.000 title description 3
- 238000007654 immersion Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/51—Scattering, i.e. diffuse reflection within a body or fluid inside a container, e.g. in an ampoule
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N2021/4704—Angular selective
- G01N2021/4711—Multiangle measurement
- G01N2021/4719—Multiangle measurement using a optical fibre array
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (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)
- Optical Measuring Cells (AREA)
Description
Die Neuerung betrifft eine Vorrichtung zur schnellen Messung der zeitlichen Änderung der Strahlungsintensität eines Strahlers und Erfassung der Winkelabhängigkeit, wobei der Strahler durch Anregung kleiner Teilchen mittels Laserstrahlung in einem für Strahlung durchlässigen Behälter erzeugt und die so erzeugte Strahlung in einer Entfernung vom Strahler mittels eines Detektors unter Zuordnung von Strahlungswinkel zu Ort auf der strahlungsempfindlichen Fläche des Detektors erfaßt wird.The innovation concerns a device for rapidly measuring the temporal change in the radiation intensity of a radiator and recording the angle dependence, whereby the radiator is generated by exciting small particles using laser radiation in a container that is permeable to radiation and the radiation thus generated is recorded at a distance from the radiator by means of a detector, assigning the radiation angle to the location on the radiation-sensitive surface of the detector.
Eine derartige Vorrichtung ist aus der DE-PS 23 38 481 bekannt. Eine Reihe von Streulichtmessungen mit einer solchen Vorrichtung an kleinen Teilchen, wie Aerosolen, Kolloidsuspensionen oder Teilchenstrahlen, setzt aber den Gebrauch von Behältern mit strahlungsdurchlässigen Wänden (z. B. Glasküvetten) voraus, in denen die Teilchen enthalten sind oder geführt werden. Das Auflösungsvermögen ist jedoch begrenzt, da aufgrund der endlichen Ausdehnung der Küvette (z. B. 10 mm Durchmesser) in Richtung des einfallenden (Laser)-lichtbündels das Streuvolumen eine entsprechende Länge erhält. Ein Detektor, der dann unter einem bestimmten Winkel zur Richtung des einfallenden Lichtbündels aufgestellt ist, empfängt also Streulicht aus einem gewissen Bereich von Streuwinkeln.Such a device is known from DE-PS 23 38 481. A series of scattered light measurements with such a device on small particles, such as aerosols, colloid suspensions or particle beams, however, requires the use of containers with radiation-permeable walls (e.g. glass cuvettes) in which the particles are contained or guided. The resolution is limited, however, because the scattering volume has a corresponding length due to the finite extension of the cuvette (e.g. 10 mm diameter) in the direction of the incident (laser) light beam. A detector, which is then set up at a certain angle to the direction of the incident light beam, therefore receives scattered light from a certain range of scattering angles.
Die der Neuerung gestellte Aufgabe besteht darin, die e. g. Vorrichtung dahingehend zu verbessern, daß das Winkelauflösungsvermögen erhöht und damit die Messung noch schneller als bisher durchgeführt werden kann.The task of the innovation is to improve the e.g. device so that the angular resolution is increased and the measurement can thus be carried out even faster than before.
Die Lösung sieht neuerungsgemäß vor, daß /wischen den Behälter und dem Detektor ein weiterer Behälter mit einem Immersionsbad angeordnet ist.The solution provides for an additional container with an immersion bath to be arranged between the container and the detector.
&igr; · i&igr; · i
I 1*1I1*1
Die übrigen Ansprüche geben vorteilhafte Ausführungsformen der Neuerung an.The remaining claims specify advantageous embodiments of the innovation.
Die Neuerung wird im folgenden anhand eines Auaführungsbeiepiels mittels der Figur näher erläutert.The innovation is explained in more detail below using an example implementation with the help of the figure.
Das auszumessende Streulicht 1 geht von Teilchen aus, welche in einer wäßrigen Lösung 2 (Brechungsindex n) innerhalb einer Glasküvette 3 geführt werden. Die Lösung 2 wird mittels eines Hs-Ne-Laserlichtstrahls 4 beleuchtet. Die GlasRüvetts 3 selbst ist von einer Immersionsküvette 5 umgeben, die selbst wieder mit Immersionsflüssigkeit 6 (Brechungsindex &eegr; > 1) gefüllt ist. Die Außenwand 2 der Immersionsküvette 5 ist zylindrisch ausgebildet.The scattered light 1 to be measured comes from particles which are guided in an aqueous solution 2 (refractive index n) within a glass cuvette 3. The solution 2 is illuminated by a Hs-Ne laser light beam 4. The glass cuvette 3 itself is surrounded by an immersion cuvette 5, which itself is filled with immersion liquid 6 (refractive index η > 1). The outer wall 2 of the immersion cuvette 5 is cylindrical.
Der Außenwand 7 steht im Abstand gegenüber eine strahlungsempfindliche Aufnahmefläche 8 für die gestreute Strahlung 1, die in einzelne Sektoren aufgeteilt ist. Fiberoptische Bündel (166 Stück) 9 führen von diesen Sektoren weg und transformieren die zylindrische Aufnahmefläche 8 in eine plane Aufnahmefläche 10 mit entsprechender Anzahl von Sektoren. Im Abstand zu dieser Aufnahmefläche 10 steht der Detektor 11 mit Objektiv 12, Bildverstärker 13 und Kamera 14.At a distance from the outer wall 7 there is a radiation-sensitive recording surface 8 for the scattered radiation 1, which is divided into individual sectors. Fiber optic bundles (166 pieces) 9 lead away from these sectors and transform the cylindrical recording surface 8 into a flat recording surface 10 with the corresponding number of sectors. At a distance from this recording surface 10 there is the detector 11 with lens 12, image intensifier 13 and camera 14.
Die Glas- und Immersionsküvette 2 und 5 weisen eine gemeinsame Grenzfläche 15 auf, die der Wandung eier Glasküvette 2 entspricht. Die Grenzfläche 15, die Grenzfläche bzw. Außenfläche 7 und die Aufnahmefläche 8 sind konzentrisch zueinander angeordnet. Der Radius der Immersionsküvette 5 ist derart bemessen, daß das gestreute Licht 1 jeweils auf einen der Sektoren der Aufnahmefläche 8 fokussiert wird.The glass and immersion cuvettes 2 and 5 have a common interface 15, which corresponds to the wall of a glass cuvette 2. The interface 15, the interface or outer surface 7 and the receiving surface 8 are arranged concentrically to one another. The radius of the immersion cuvette 5 is dimensioned such that the scattered light 1 is focused on one of the sectors of the receiving surface 8.
Der Radius der Außenfläche 7 beträgt beispielsweise 15 cm, der der Grenzfläche 15 ca. 5 cm.For example, the radius of the outer surface 7 is 15 cm and that of the boundary surface 15 is approximately 5 cm.
ItI I * · * f · · (ItI I * · * f · · (
I till I « · ·« ·· It (ft I I * * t * 4I till I « · ·« ·· It (ft I I * * t * 4
II ill III! Il : &igr; . I ti tiII ill III! Il : &igr; . I ti ti
Die Birechungsindices sind 1.33 für das sowohl in der Glasküvette 2 als auch in der Inunersionsküvette befindliche Wasser und 1.54 für das verwendete Quarz-Glas.The calculation indices are 1.33 for the water in both the glass cuvette 2 and the inersion cuvette and 1.54 for the quartz glass used.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8801431U DE8801431U1 (en) | 1988-02-05 | 1988-02-05 | Device for rapid measurement of the temporal change of the radiation intensity of a radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8801431U DE8801431U1 (en) | 1988-02-05 | 1988-02-05 | Device for rapid measurement of the temporal change of the radiation intensity of a radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8801431U1 true DE8801431U1 (en) | 1988-03-17 |
Family
ID=6820331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8801431U Expired DE8801431U1 (en) | 1988-02-05 | 1988-02-05 | Device for rapid measurement of the temporal change of the radiation intensity of a radiator |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE8801431U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19826409A1 (en) * | 1998-06-15 | 2000-01-13 | Gms Frank Optic Products Gmbh | Radiation source radiation characteristic measurement |
-
1988
- 1988-02-05 DE DE8801431U patent/DE8801431U1/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19826409A1 (en) * | 1998-06-15 | 2000-01-13 | Gms Frank Optic Products Gmbh | Radiation source radiation characteristic measurement |
| DE19826409C2 (en) * | 1998-06-15 | 2000-07-13 | Gms Frank Optic Products Gmbh | Method and device for measuring the radiation characteristics of radiation sources |
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