GB538178A - Improvements in and relating to fluorescent screens - Google Patents
Improvements in and relating to fluorescent screensInfo
- 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
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.
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)
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 |
-
1940
- 1940-05-08 GB GB8259/40A patent/GB538178A/en not_active Expired
Cited By (3)
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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