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AbstractAbstract
No abstract available
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Journal Article
Journal
Nature (London); v. 244(5412); p. 137-138
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AbstractAbstract
[en] Short communication. 4 refs
Original Title
Analiz vremennykh kharakteristik raspada vozbuzhdennykh aktinidnykh yader s ispol'zovaniem fenomenologicheskoj modeli plotnosti urovnej
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Secondary Subject
Source
Dzhelepov, B.S.; AN SSSR, Moscow (Russian Federation); AN Kazakhskoj SSR, Alma-Ata (Kazakhstan). Inst. Yadernoj Fiziki; 486 p; 1992; p. 309; International conference on nuclear spectroscopy and nuclear structure; Mezhdunarodnoe soveshchanie po yadernoj spektroskopii i strukture atomnogo yadra; Alma-Ata (Kazakhstan); 21-24 Apr 1992
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Report
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Conference
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Surin, V.M.; Fomushkin, Eh.F.
International Atomic Energy Agency, Vienna (Austria). International Nuclear Data Committee1983
International Atomic Energy Agency, Vienna (Austria). International Nuclear Data Committee1983
AbstractAbstract
[en] The experimental measurements and critical evaluation results of the long-lived isotope half-decay periods of transactinium elements (from 228Th to 257Fm) are given on July 1981 to be published in open literature and related to the natural radioactive decay. From the massif of the known half-decay periods the most reliable data were selected, received or evaluated and recommended for practical use; the calculations of isotope specific activities were performed on this data. (author)
Primary Subject
Source
Sep 1983; 43 p; Translation from Voprosy Atomnoj Nauki i Tekhniki, Seriya: Yadernye Konstanty 4(48). 298 refs.
Record Type
Report
Literature Type
Numerical Data
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Reference NumberReference Number
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INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Issledovanie nakopleniya izotopov protaktiniya i urana pri obluchenii Th230 i Th232 teplovymi nejtronami
Primary Subject
Record Type
Journal Article
Literature Type
Progress Report
Journal
At. Energ. (USSR); v. 28(3); p. 199-201
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INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Complements au nouveau traite de chimie minerale
Source
1974; 171 p; Masson; Paris, France
Record Type
Book
Literature Type
Bibliography
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AbstractAbstract
[en] The authors report that the new heavy neutron-rich isotope 239Pa has been observed for the first time and its half life has been determined to be 106 +- 30 min
Primary Subject
Record Type
Journal Article
Literature Type
Numerical Data
Journal
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Reference NumberReference Number
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Coquema, C.; Coulomb, R.; Goldsztein, M.; Schiltz, J.C.
CEA Fontenay-aux-Roses, 92 (France)1961
CEA Fontenay-aux-Roses, 92 (France)1961
AbstractAbstract
[en] The existence in the uranium families of two long-life descendants: ionium (half-life 80000 years) and protactinium (half-life 32000 years), together with the differences in geochemical behaviour of the various natural radio-elements, particularly thorium, make it possible to envisage several models of geological time-scales covering-periods from 0 to 500000 years The theory of two of the most important models i s developed and methods are described for making radiochemical measurements on the various nuclides which are essential for resolving these models (U238, Th234, Th230, Ra226, Pa231, Th232, Th228, Po210) An example of dating is given in the case of a secondary mineralisation on a weathered portion of a deposit in the Limouzat (Forez). Samples of autunite and chalcolite taken at different levels of the mine were calculated to be between 30000 and 240000 years old. (authors)
[fr]
L'existence dans les familles de l'uranium de deux descendants a vie longue: ionium (periode 80000 ans) et protactinium (periode 32000 ans), ainsi que les differences tie comportement geochimique des divers radioelements naturels, en particulier du thorium, permettent d'envisager plusieurs modeles d'echelles geochronologiques couvrant un domaine allant de 0 a 500000 ans. Nous developpons la theorie de deux de ces modeles les plus importants, et decrivons les methodes de dosage radiochimiques des divers nucleides dont la connaissance est necessaire a la resolution des modeles (238U, 234Th, 230Th, 226Ra, 231Pa, 232Th, 228Th, 210Po). On donne un exemple de chronologie d'une mineralisation secondaire sur la partie alteree du gisement du Liznouzat (Forez). Des echantillons d'autunite et de chalcolite pris a differents niveaux de la mine ont pu etre dates de 30000 a 240000 ans. (auteurs)Original Title
Methodes de chronologie par le desequilibre radioactif (1961)
Primary Subject
Source
1961; 46 p; 27 refs.
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Report
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Melikov, Yu.V.; Platonov, S.Yu.; Tulinov, A.F.; Fotina, O.V.; Yuminov, O.A.
Proceedings of 19. All-union conference on physics of charged particles and crystals interactions1990
Proceedings of 19. All-union conference on physics of charged particles and crystals interactions1990
AbstractAbstract
[en] Analysis of dependence of the detected time delay value in the fission of excited Pa isotopes and Pu isotopes on the depth of the second potential well is performed. An exact correlation between the time delay value and the second potential well depth is ascertained. 11 refs.; 1 fig
Original Title
Issledovanie yavleniya zaderzhannogo deleniya vozbuzhdennykh aktinidnykh yader s pomoshch'yu metoda tenej
Primary Subject
Source
Khodyrev, V.A. (Ed.); AN SSSR, Moscow (USSR); Moskovskij Gosudarstvennyj Univ., Moscow (USSR); Moskovskij Gosudarstvennyj Univ., Moscow (USSR). Nauchno-Issledovatel'skij Inst. Yadernoj Fiziki; 180 p; 1990; p. 60-62; 19. All-Union conference on physics of charged particles and crystals interactions; Moscow (USSR); 30 May - 1 Jun 1989
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Miscellaneous
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Conference
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Reference NumberReference Number
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INIS IssueINIS Issue
AbstractAbstract
[en] The masses of 204-210,212Fr and 224-228Fr have been determined with direct on-line mass spectrometry. From previously known Qsub(α) values, the masses of 28 isotopes of Pa, Ac, At, Bi and TI are deduced. All these experimental masses are compared with the current mass predictions. (orig.)
Primary Subject
Record Type
Journal Article
Journal
Nuclear Physics. A; ISSN 0375-9474; 
; v. 340(1); p. 1-12
; v. 340(1); p. 1-12
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Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Platonov, S.Yu.; Fotina, O.V.; Yuminov, O.A.
Nuclear spectroscopy an nuclear structure. Summaries of reports of the 41. International conference1991
Nuclear spectroscopy an nuclear structure. Summaries of reports of the 41. International conference1991
AbstractAbstract
[en] Short note. 4 refs
Original Title
Vliyanie plotnosti urovnej vo vtoroj potentsial'noj yame na kharakteristiki raspada vozbuzhdennykh tyazhelykh yader; 232,233Pa; 235,236,238,239Np
Primary Subject
Source
AN SSSR, Moscow (USSR); AN Belorusskoj SSR, Minsk (Belarus); Belorusskij Gosudarstvennyj Univ., Minsk (Belarus); 534 p; 1991; p. 401; 41. International conference on nuclear spectroscopy and nuclear structure; Minsk (Belarus); 16-19 Apr 1991
Record Type
Miscellaneous
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