GB962990A - Improvements in or relating to instruments for gauging material properties by nuclear radiation techniques and to radiation sources - Google Patents

Improvements in or relating to instruments for gauging material properties by nuclear radiation techniques and to radiation sources

Info

Publication number
GB962990A
GB962990A GB4289460A GB4289460A GB962990A GB 962990 A GB962990 A GB 962990A GB 4289460 A GB4289460 A GB 4289460A GB 4289460 A GB4289460 A GB 4289460A GB 962990 A GB962990 A GB 962990A
Authority
GB
United Kingdom
Prior art keywords
target
radiation
rays
aperture
mixture
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
GB4289460A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4289460A priority Critical patent/GB962990A/en
Publication of GB962990A publication Critical patent/GB962990A/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
    • G01N23/06—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 measuring the absorption
    • G01N23/083—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 measuring the absorption the radiation being X-rays

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (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)
  • Measurement Of Radiation (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)

Abstract

962,990. Measurement of materials by radiation. A. ABBEY. (Industrial Nucleonics Corporation). Dec. 13, 1960, No. 42894/60. Heading G1A. Also in Division H5] A mixture of (3-rays and X-rays is obtained by allowing a primary beam of #-radiation to fall on a target which intercepts part only of said beam, the target being of a material which produces X-rays on bombardment by #-radiation. Fig. 5, shows a #-radiation source 40 and a detector 12, between which is disposed a target 36 having an aperture 44 therein. The target is thick enough to absorb most (about 97%) of the #-particles, but these react with the nuclei in the target material to produce a "bremsstrahlung" beam of X-rays, represented at 42. Thus the resultant radiation is a mixture of these X-rays and part of the original #-radiation which passes unintercepted through the aperture 44. This combined radiation is particularly suitable for thickness gauge measurements on sheet material, in which the radiation passes through the material and is detected on the other side. In the embodiment shown in more detail in Fig. 7, the # emitter radioisotope is contained in a sealed capsule 56. This mounted on a flange 62 secured by screws 64, 66 in a rectangular metal block 50. Projecting from block 50 is a cylindrical portion 52, in which a deep annular groove 76 is cut; this groove is filled with lead to act as a shield. The open end of cylinder 52 is closed by the target disc 80 (corresponding to target 36 in Fig. 5), which has nine holes 86 drilled therein, arranged in the form of a square. It is desirable for the target material to have a low atomic number, a preferred material being anodized aluminium. Instead of an apertured target, a solid target or plurality of targets may be used which have a smaller area than the beam, which has the same result of a partly non-intercepted beam. In Fig. 8, (not shown) the same arrangement is modified for the reflection method of thickness gauging. Specification 794,207 is referred to.
GB4289460A 1960-12-13 1960-12-13 Improvements in or relating to instruments for gauging material properties by nuclear radiation techniques and to radiation sources Expired GB962990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4289460A GB962990A (en) 1960-12-13 1960-12-13 Improvements in or relating to instruments for gauging material properties by nuclear radiation techniques and to radiation sources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4289460A GB962990A (en) 1960-12-13 1960-12-13 Improvements in or relating to instruments for gauging material properties by nuclear radiation techniques and to radiation sources

Publications (1)

Publication Number Publication Date
GB962990A true GB962990A (en) 1964-07-08

Family

ID=10426433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4289460A Expired GB962990A (en) 1960-12-13 1960-12-13 Improvements in or relating to instruments for gauging material properties by nuclear radiation techniques and to radiation sources

Country Status (1)

Country Link
GB (1) GB962990A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266952A (en) * 1992-05-15 1993-11-17 Scan Tech S A Radiometric thickness measurement gauge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266952A (en) * 1992-05-15 1993-11-17 Scan Tech S A Radiometric thickness measurement gauge
US5418830A (en) * 1992-05-15 1995-05-23 Scan-Tech S.A. Radiometric thickness measurement gage

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