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GB953356A - Improvements in or relating to fluorimeters - Google Patents

Improvements in or relating to fluorimeters

Info

Publication number
GB953356A
GB953356A GB36445/60A GB3644560A GB953356A GB 953356 A GB953356 A GB 953356A GB 36445/60 A GB36445/60 A GB 36445/60A GB 3644560 A GB3644560 A GB 3644560A GB 953356 A GB953356 A GB 953356A
Authority
GB
United Kingdom
Prior art keywords
filter
photo
sample
fluorescence
uranium
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
Application number
GB36445/60A
Inventor
Marcel Gouyon
Andre Pascal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB953356A publication Critical patent/GB953356A/en
Expired legal-status Critical Current

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
    • 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
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters

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)
  • Optical Measuring Cells (AREA)

Abstract

953,356. Photo-electric fluorescence determination. COMMISSARIAT A L'ENERGIE ATOMIQUE. Oct. 24,1960 [Nov. 19, 1959], No. 36445/60. Heading G1A. A fluorescence intensity determining device capable of manufacture in a light and portable form for uranium prospecting, comprises a flash light source 4. The radiation passes through diaphragm 5 and is collimated by lens 6 and passed to filter 7 which absorbs the visible light and transmits the ultra-violet. This filter is mounted in an aperture in the surface of internally polished sphere 8, preferably made of aluminium alloy. Diametrically opposite the filter is a further aperture 9 against which can be presented the sample 10 to be tested. This may be solid or liquid and is mounted in one of a number of depressions in a rotatable disc 11. Fluorescence of the sample gives visible light which passes through filter 12, designed to stop ultra-violet radiations, in another position in the sphere and thence to photo-multiplier detector 13. The electrical output is fed to a resistancecapacitance circuit 15 which integrates the signal for application to galvanometer indicator 16. If uranyl salts are present in the sample the indication is proportional to the concentration of uranium. The power supply may comprise a nickel-cadmium six-volt battery 1 driving a transistor convertor 2 producing three hundred volts for the spark-gap discharger 3 causing the lamp flash and also the high voltage photo-multiplier supply 14.
GB36445/60A 1959-11-19 1960-10-24 Improvements in or relating to fluorimeters Expired GB953356A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR810629A FR1251279A (en) 1959-11-19 1959-11-19 New low consumption prospecting fluorimeter

Publications (1)

Publication Number Publication Date
GB953356A true GB953356A (en) 1964-03-25

Family

ID=8721500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36445/60A Expired GB953356A (en) 1959-11-19 1960-10-24 Improvements in or relating to fluorimeters

Country Status (7)

Country Link
BE (1) BE596313A (en)
ES (1) ES262560A1 (en)
FR (1) FR1251279A (en)
GB (1) GB953356A (en)
LU (1) LU39351A1 (en)
NL (1) NL257943A (en)
OA (1) OA01332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181232A (en) * 1985-10-04 1987-04-15 Gen Electric Plc Measuring liquid volume

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845309A (en) * 1973-09-10 1974-10-29 Thermo Electron Corp Fluorescent gas analyzer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181232A (en) * 1985-10-04 1987-04-15 Gen Electric Plc Measuring liquid volume
GB2181232B (en) * 1985-10-04 1989-09-13 Gen Electric Plc Measuring liquid volume

Also Published As

Publication number Publication date
LU39351A1 (en) 1960-12-29
NL257943A (en)
OA01332A (en) 1969-02-15
ES262560A1 (en) 1961-04-16
BE596313A (en) 1961-02-15
FR1251279A (en) 1961-01-20

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