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GB2017468A - Improvements in radiography - Google Patents

Improvements in radiography

Info

Publication number
GB2017468A
GB2017468A GB7905099A GB7905099A GB2017468A GB 2017468 A GB2017468 A GB 2017468A GB 7905099 A GB7905099 A GB 7905099A GB 7905099 A GB7905099 A GB 7905099A GB 2017468 A GB2017468 A GB 2017468A
Authority
GB
United Kingdom
Prior art keywords
medium
rays
diamonds
examining
diamond
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.)
Granted
Application number
GB7905099A
Other versions
GB2017468B (en
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.)
De Beers Consolidated Mines Ltd
Original Assignee
De Beers Consolidated Mines Ltd
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 De Beers Consolidated Mines Ltd filed Critical De Beers Consolidated Mines Ltd
Priority to GB7905099A priority Critical patent/GB2017468B/en
Publication of GB2017468A publication Critical patent/GB2017468A/en
Application granted granted Critical
Publication of GB2017468B publication Critical patent/GB2017468B/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
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/389—Precious stones; Pearls
    • 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

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

A method of examining a diamond or other solid object comprises placing the object in a medium such that the total X-ray absorption of the medium and the object is approximately uniform, exposing the object to X-rays and, optionally, recording the pattern of X-rays transmitted. By this means differences in thickness of the object are compensated for. Suitable media for use with diamonds are aqueous solutions of barium chloride or lead nitrate; or organic liquids.
GB7905099A 1978-02-14 1979-02-13 Radiography Expired GB2017468B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7905099A GB2017468B (en) 1978-02-14 1979-02-13 Radiography

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB589878 1978-02-14
GB7905099A GB2017468B (en) 1978-02-14 1979-02-13 Radiography

Publications (2)

Publication Number Publication Date
GB2017468A true GB2017468A (en) 1979-10-03
GB2017468B GB2017468B (en) 1982-08-18

Family

ID=26240243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7905099A Expired GB2017468B (en) 1978-02-14 1979-02-13 Radiography

Country Status (1)

Country Link
GB (1) GB2017468B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006033102A1 (en) * 2004-09-21 2006-03-30 Zvi Porat A system and method for three-dimensional location of inclusions in a gemstone
WO2008017369A3 (en) * 2006-08-05 2008-04-10 Zeiss Ind Messtechnik Gmbh Method for measuring an object using an x-ray sensor system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006033102A1 (en) * 2004-09-21 2006-03-30 Zvi Porat A system and method for three-dimensional location of inclusions in a gemstone
WO2008017369A3 (en) * 2006-08-05 2008-04-10 Zeiss Ind Messtechnik Gmbh Method for measuring an object using an x-ray sensor system

Also Published As

Publication number Publication date
GB2017468B (en) 1982-08-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980213