GB804902A - Neutron shielding material - Google Patents

Neutron shielding material

Info

Publication number
GB804902A
GB804902A GB2888656A GB2888656A GB804902A GB 804902 A GB804902 A GB 804902A GB 2888656 A GB2888656 A GB 2888656A GB 2888656 A GB2888656 A GB 2888656A GB 804902 A GB804902 A GB 804902A
Authority
GB
United Kingdom
Prior art keywords
cadmium
lithium
parts
fluoride
carbon
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
GB2888656A
Inventor
Ivo Joseph Lockyer
Peter Kenneth Clifford Wiggs
Albert Ernest Wiggs
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.)
Morgan Crucible Co PLC
Original Assignee
Morgan Crucible Co PLC
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 Morgan Crucible Co PLC filed Critical Morgan Crucible Co PLC
Priority to GB2888656A priority Critical patent/GB804902A/en
Priority to DEM35391A priority patent/DE1064163B/en
Publication of GB804902A publication Critical patent/GB804902A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials

Abstract

Material for moderating and absorbing neutrons from a fast reactor comprises carbon, carbonisable binder and lithium, cadmium, gadolinium, samarium and/or europium. Amorphous and/or crystalline carbon may be used, for example a graphitic mix, 50 parts dust finer than 100 mesh and 25 parts dust coarser than 50 mesh mixed with 25 parts pitch and/or tar. This mix is formed into a block, e.g. by tamping layer after layer, and heat treated at about 1000 DEG C. to carbonize the binder. Before this heat treatment, 10 parts of lithium fluoride may be added, to provide 0.0455 gms. Li per cc. and hence a neutron capture cross-section of 0.28 cm.2 per cc. Or the block of carbon after heat treatment may be immersed in molten lithium fluoride or in molten cadmium. Lithium sulphate, cadmium fluoride, hydrated cadmium acetate and gadolinium acetate are other examples of suitable compounds. The material may be used as a shield for a fast reactor or a fast breeder reactor, but a gamma-ray shield is necessary if cadmium is used and if lithium is used the active tritium produced may be extracted. Blocks may be built to form a wall or the granular material compacted and/or heattreated in situ. To reduce Wigner growth the screen may be maintained at a temperature of several hundred degrees Centigrade.
GB2888656A 1956-09-21 1956-09-21 Neutron shielding material Expired GB804902A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2888656A GB804902A (en) 1956-09-21 1956-09-21 Neutron shielding material
DEM35391A DE1064163B (en) 1956-09-21 1957-09-19 Nuclear reactor shielding material and process for its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2888656A GB804902A (en) 1956-09-21 1956-09-21 Neutron shielding material

Publications (1)

Publication Number Publication Date
GB804902A true GB804902A (en) 1958-11-26

Family

ID=10282769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2888656A Expired GB804902A (en) 1956-09-21 1956-09-21 Neutron shielding material

Country Status (2)

Country Link
DE (1) DE1064163B (en)
GB (1) GB804902A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183713A1 (en) * 1972-05-05 1973-12-21 Inst Max Von Laue P Langevin Neutron shield material - comprising polyurethane and absorption material
FR2918498A1 (en) * 2007-07-06 2009-01-09 Antoine Jacques Candeias Living organism protecting device, has carbon matrix mounted between dense materials to stop beta rays and gamma rays, where materials with good heat conductivity enclose carbon matrix and paraffin matrix for stopping neutron rays
US11177045B2 (en) 2017-03-15 2021-11-16 Kabushiki Kaisha Toshiba Thermal-neutron reactor core and design method for thermal-neutron reactor core
CN115215659A (en) * 2021-04-16 2022-10-21 国立大学法人筑波大学 Sintered body for radiation shielding material, and method for producing same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178527B (en) * 1959-11-24 1964-09-24 Licentia Gmbh Nuclear reactor shield

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183713A1 (en) * 1972-05-05 1973-12-21 Inst Max Von Laue P Langevin Neutron shield material - comprising polyurethane and absorption material
FR2918498A1 (en) * 2007-07-06 2009-01-09 Antoine Jacques Candeias Living organism protecting device, has carbon matrix mounted between dense materials to stop beta rays and gamma rays, where materials with good heat conductivity enclose carbon matrix and paraffin matrix for stopping neutron rays
US11177045B2 (en) 2017-03-15 2021-11-16 Kabushiki Kaisha Toshiba Thermal-neutron reactor core and design method for thermal-neutron reactor core
CN115215659A (en) * 2021-04-16 2022-10-21 国立大学法人筑波大学 Sintered body for radiation shielding material, and method for producing same

Also Published As

Publication number Publication date
DE1064163B (en) 1959-08-27

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