GB677222A - Improvements in luminescent screens for x-ray technology - Google Patents

Improvements in luminescent screens for x-ray technology

Info

Publication number
GB677222A
GB677222A GB23189/45A GB2318945A GB677222A GB 677222 A GB677222 A GB 677222A GB 23189/45 A GB23189/45 A GB 23189/45A GB 2318945 A GB2318945 A GB 2318945A GB 677222 A GB677222 A GB 677222A
Authority
GB
United Kingdom
Prior art keywords
manganese
gold
silver
copper
group
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
GB23189/45A
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.)
United States Radium Corp
Original Assignee
United States Radium Corp
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 United States Radium Corp filed Critical United States Radium Corp
Publication of GB677222A publication Critical patent/GB677222A/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)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Luminescent Compositions (AREA)

Abstract

677,222. Luminescent materials. UNITED STATES RADIUM CORPORATION. Sept. 8, 1945 [Nov. 21, 1944], No. 23189/45. Also in Group 39 (i). A luminescent screen for X-ray detection comprises zinc cadmium sulphide activated by silver but with nickel excluded, the proportion of cadmium sulphide being from 38-70 per cent. Above 70 per cent the brightness is low. Copper, gold and manganese may also be present as activators. The amount of silver is from one part in 3000 to one part in 100,000; the preferred amount being one part in 20,000; copper or gold should not exceed one part in 100,000 and manganese one part in 10,000. The dominant wavelength of the fluorescent colour is 559 to 618 millimicrons. Reference has been directed by the Comptroller to Specification 440,818, (Group XX].
GB23189/45A 1944-11-21 1945-09-08 Improvements in luminescent screens for x-ray technology Expired GB677222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677222XA 1944-11-21 1944-11-21

Publications (1)

Publication Number Publication Date
GB677222A true GB677222A (en) 1952-08-13

Family

ID=22077947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23189/45A Expired GB677222A (en) 1944-11-21 1945-09-08 Improvements in luminescent screens for x-ray technology

Country Status (1)

Country Link
GB (1) GB677222A (en)

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