GB538178A - Improvements in and relating to fluorescent screens - Google Patents

Improvements in and relating to fluorescent screens

Info

Publication number
GB538178A
GB538178A GB8259/40A GB825940A GB538178A GB 538178 A GB538178 A GB 538178A GB 8259/40 A GB8259/40 A GB 8259/40A GB 825940 A GB825940 A GB 825940A GB 538178 A GB538178 A GB 538178A
Authority
GB
United Kingdom
Prior art keywords
chloride
iodide
activator
pressure
caesium
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
GB8259/40A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB538178A publication Critical patent/GB538178A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Luminescent Compositions (AREA)

Abstract

538,178. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. May 8, 1940, No. 8259. Convention date, May 9, 1939. [Class 39 (i)] A luminescent screen for X-rays or cathode rays is made of alkali halides with an activator, the material being subjected to a pressure of about 15,000 lbs. per sq. in. at about 140 or 150‹ C. to convert it to a non-granular form. The pressure may also embed the material in a base and cover sheets which may be made of cellulosic sheet material, polyvinyl compounds, acrylic acid esters, rubber hydrochloride &c. A suitable combination is one part of caesium chloride to three of potassium iodide, activated by half per cent of thallium chloride, but potassium bromide and chloride, caesium iodide and rubidium iodide may also be used, and bismuth may be employed as an activator.
GB8259/40A 1939-05-09 1940-05-08 Improvements in and relating to fluorescent screens Expired GB538178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US538178XA 1939-05-09 1939-05-09

Publications (1)

Publication Number Publication Date
GB538178A true GB538178A (en) 1941-07-23

Family

ID=21986743

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8259/40A Expired GB538178A (en) 1939-05-09 1940-05-08 Improvements in and relating to fluorescent screens

Country Status (1)

Country Link
GB (1) GB538178A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079258A (en) * 1975-02-13 1978-03-14 Siemens Aktiengesellschaft Luminescent screen excitable with energy-rich radiation
US20140203211A1 (en) * 2011-08-19 2014-07-24 Nihon Kessho Kogaku Co., Ltd. Scintillator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079258A (en) * 1975-02-13 1978-03-14 Siemens Aktiengesellschaft Luminescent screen excitable with energy-rich radiation
US20140203211A1 (en) * 2011-08-19 2014-07-24 Nihon Kessho Kogaku Co., Ltd. Scintillator
US9678223B2 (en) * 2011-08-19 2017-06-13 Nihon Kessho Kogaku., Ltd. Scintillator

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