GB817571A - Means for testing materials - Google Patents

Means for testing materials

Info

Publication number
GB817571A
GB817571A GB11801/45A GB1180145A GB817571A GB 817571 A GB817571 A GB 817571A GB 11801/45 A GB11801/45 A GB 11801/45A GB 1180145 A GB1180145 A GB 1180145A GB 817571 A GB817571 A GB 817571A
Authority
GB
United Kingdom
Prior art keywords
sphere
measured
block
cadmium
neutron
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
GB11801/45A
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Publication of GB817571A publication Critical patent/GB817571A/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
    • G01N23/09—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 neutrons

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)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

817,571. Nucleonics. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 10, 1945 [May 8, 1944], No. 11801/45. Class 39(4). Neutron absorption in a moderator is determined by measuring two different density distributions of thermal neutrons within a mass of the moderator. By using a Ra-Be source 29 of fast neutrons the thermal neutron densities in a rectangular block 24 of graphite are measured by means of indium or rhodium foil 19 inserted successively in slots 30. These measurements are made with firstly cadmium foil 25 surrounding the block on six sides and secondly with the cadmium sheet on the top of the block removed. The densities may be measured in a sphere of graphite with a central neutron source firstly with a cadmium sheet wrapped around the sphere and then with it removed, the sphere being in a tank of water or paraffin for all measurements. Similarly absorption in beryllium or heavy water can be measured. The diffusion length is calculated from the results obtained.
GB11801/45A 1944-05-08 1945-05-10 Means for testing materials Expired GB817571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US817571XA 1944-05-08 1944-05-08

Publications (1)

Publication Number Publication Date
GB817571A true GB817571A (en) 1959-08-06

Family

ID=22166194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11801/45A Expired GB817571A (en) 1944-05-08 1945-05-10 Means for testing materials

Country Status (1)

Country Link
GB (1) GB817571A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2822538C1 (en) * 2023-12-25 2024-07-08 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" System for detecting nuclear fuel fragments in graphite units of nuclear reactor and determining their parameters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2822538C1 (en) * 2023-12-25 2024-07-08 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" System for detecting nuclear fuel fragments in graphite units of nuclear reactor and determining their parameters

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