Filters
Results 1 - 10 of 1447
Results 1 - 10 of 1447.
Search took: 0.022 seconds
Sort by: date | relevance |
AbstractAbstract
[en] The scintillation detector is one of the most widely used radiation detectors. At present there is a strong interest in the development of new fast inorganic scintillators for applications in high-energy physics, medical diagnostics and materials science. A review is presented of the main fast luminescence mechanisms in inorganic crystals and the directions of research. (author)
Source
LUMDETR '91: international symposium on luminescent detectors and transformers of ionizing radiation; Riga (Latvia); 9-12 Oct 1991
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A design is described of a well-type scintillator whose response to the measured radioactive material is only little dependent on the amount thereof. (V.V.)
Original Title
Scintilator studnoveho typu
Source
29 Mar 1973; 3 p; CS PATENT DOCUMENT 151864
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Among inorganic crystalline luminescent compounds, X-ray luminophors are distinguished by the facts that their conversion efficiency is most sensitive to their intrinsic and impurity structural defects and that the quality of the image obtained by them depends to the greatest extent on the particle form and the perfection of their surface. Screens with calcium tungstate luminophors having oval particles with a smooth surface remain unsurpassable in image quality. The efficiency of this luminophor is 5-6%, whereas that of yttrium oxosulfide activated by terbium is nearly 13%. However, it should be noted that the quality of an image is determined not only by the shape of the particles and their packing in the luminophor layer, which depends on the manner of its formation, but also on the luminophor efficiency. An imperfect layer yields structural graininess of an image, and small doses attained at high efficiency produce so-called quantum graininess of an image. Thus, quantum fluctuations limit the tendency toward higher efficiency. Luminophors with an efficiency of 10-12% and with particles similar to those of calcium tungstate luminophor appear to be optimal for most roentgenographic trends in medicine. It is natural that these are only the necessary conditions for producing the open-quotes idealclose quotes X-ray screen because the formation of a perfect luminophor layer from such a luminophor is a separate problem
Secondary Subject
Source
Cover-to-cover Translation of Izvestiia Akademii Nauk SSSR, Neorganicheskie Materialy (USSR); Translated from Neorganicheskie Materialy; 29: No. 10, 1778-1181(1993).
Record Type
Journal Article
Literature Type
Translation
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Scintillateurs obtenus par extrusion de macrocristaux
Source
28 Apr 1972; 14 p; FR PATENT DOCUMENT 2134651/A/; Available from INPI, Paris; Available from Institut National de la Propriete Industrielle, Paris (France) Priority claim 30 apr 1971.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The scintillation detector is one of the most widely used radiation detectors. At present there is great interest in the development of new fast inorganic scintillators for application in high-energy physics, medical diagnostics and materials science. A review is presented of the main fast luminescence mechanism in inorganic crystals and the directions of research. (author)
Source
LATDIM 90: 6. Europhysical topical conference on lattice defects in ionic materials; Groningen (Netherlands); 3-7 Sep 1990
Record Type
Journal Article
Literature Type
Conference
Journal
Radiation Effects and Defects in Solids; CODEN REDSE; v. 119-121(pt.1); p. 9-14
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Recent advances in the use of thermoluminescent materials for dosimetry have been reviewed in brief. For the dosimetry of X, gamma, thermal neutrons and to a certain extent beta rays, Li2B4O7 : (Cu, Ag) phosphor has been found to meet the requirements of a tissue equivalent and sensitive material. For the dosimetry of low energy beta rays, teflon dosimeters have been developed. CaSO4 : Dy powder mixed with sulfur can be used to measure the fast neutron dose of the order of a few millirads and it offers discrimination against gamma rays. Boron as a dopant for LiF makes possible to discriminate between fast neutrons and gamma rays. TL materials are also used for UV dosimetry. In the field of personnel monitoring, CaSO4 : Dy material based dosimeters are replacing the usual photographic film based dosimeters. Dosimetric properties of some of the important phosphors are given. (M.G.B.)
Secondary Subject
Source
14 refs.
Record Type
Journal Article
Journal
Bulletin of Radiation Protection; v. 1(1); p. 10-13
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Cristaux a surface deformee par croissance non-epitaxiale; scintillators
Source
30 Nov 1972; 19 p; FR PATENT DOCUMENT 2207756/A/; Available from Institut National de la Propriete Industrielle, Paris (France).
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Published in summary form only
Source
Israel Atomic Energy Commission, Tel Aviv; 396 p; Aug 1988; p. 320-321
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
Mikhailik, V.B.; Bailiff, I.K.; Kraus, H.; Rodnyj, P.A.; Ninkovic, J.
LUMDETR. 5th European conference on luminescent detectors and transformers of ionizing radiation. Book of abstracts2003
LUMDETR. 5th European conference on luminescent detectors and transformers of ionizing radiation. Book of abstracts2003
AbstractAbstract
No abstract available
Primary Subject
Secondary Subject
Source
Nitsch, K.; Rodova, M. (eds.); Institute of Physics, Academy of Sciences of the Czech Republic, Prague (Czech Republic); Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Prague (Czech Republic). Funding organisation: European Commission, Brussels (Belgium); Committee for Collaboration of the Czech Republic with CERN, Prague (Czech Republic); Crytur Ltd, Turnov (Czech Republic); [261 p.]; ISBN 80-09025779-1;
; 2003; p. 147; LUMDETR: 5. European conference on luminescent detectors and transformers of ionizing radiation; Prague (Czech Republic); 1-5 Sep 2003; Abstract of contribution Th-P21-LM, presented in the Luminescence Mechanism section in the poster form; 1 refs.

Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The activities of the Biophysical Institute of the Semmelweis Medical University (Budapest) in the past 25 years are reviewed. Excellent work has been carried out in the field of radioactivity detection: the first NaI(Tl), KI(Tl), CsI(Tl) crystals as well as the first scintigraphic measuring instruments used for thyroid-examinations were developed in the Institute. The serial production of the crystal-detectors and of the nuclear measuring instruments is the responsibility of the GAMMA factory. The Institute actively took part in the development of tracer techniques and in the organization of special courses on isotopes. (L.E.)
Original Title
Fejloedesuenk nehany mozzanata
Primary Subject
Record Type
Journal Article
Journal
Izotoptechnika; ISSN 0004-7201;
; v. 22(5-6); p. 281-286

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |