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Lee, E.D.; Snyder, T.S.; Lahoda, E.J.
Westinghouse Electric Corp., Pittsburgh, PA (United States)1992
Westinghouse Electric Corp., Pittsburgh, PA (United States)1992
AbstractAbstract
[en] This patent describes a continuous chromatographic process for the simultaneous separation of each of the isotopes of zirconium in a sample containing a mixture of zirconium isotopes to produce substantially pure fractions of each of the separated isotopes. It comprises: loading a substantially vertical chromatographic separation column having an effective column height sufficient to resolve each the zirconium isotope into a distinct product fraction having a purity greater than 90% with a cation exchange resin having a strong affinity for zirconium cations; the resin having a solid to liquid distribution coefficient in excess of about 100 in acid solutions of less than about 0.3 normal; preparing an aqueous feed solution of ionic zirconium from the sample having a pH of between about 3 and 4 and a solubility limit of about 90 g/l; and preparing an eluant capable of displacing zirconium ions from the exchange resin, wherein the eluant is an aqueous solution of a strong mineral acid having a normality greater than one
Primary Subject
Source
24 Mar 1992; 27 Apr 1990; vp; US PATENT DOCUMENT 5,098,678/A/; Patent and Trademark Office, Box 9, Washington, DC 20232 (United States); ?: 27 Apr 1990
Record Type
Patent
Country of publication
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
(c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
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INIS IssueINIS Issue
AbstractAbstract
[en] A method of separating zirconium isotopes by converting the zirconium to its iodide salt prior to separation by usual isotope methods is disclosed. After separation the desired isotopes are converted from the salt to the metal by the van Arkel-de Boer iodide process
Primary Subject
Source
11 Dec 1984; v p; US PATENT DOCUMENT 4,487,629/A/; U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50; PAT-APPL-77144.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Snyder, T.S.; Lee, E.D.
Westinghouse Electric Corp., Pittsburgh, PA (United States)1991
Westinghouse Electric Corp., Pittsburgh, PA (United States)1991
AbstractAbstract
[en] This patent describes a process for reducing the thermal neutron cross-section of zirconium by increasing the concentration of the low cross-section isotopes and decreasing the concentration of the high cross- section isotopes which comprises subjecting an essentially anhydrous alcoholic solution of an ionic zirconium compound with a higher than desired distribution of high cross-section isotopes to continuous steady state chromatography utilizing a cation exchange resin with pentavalent phosphorus derived active groups as the stationary phase, collecting at least two product fractions, one enriched in zirconium 90 and the other enriched in zirconium 94, and combining them to yield a zirconium with a lower cross-section than the starting zirconium
Primary Subject
Secondary Subject
Source
11 Jun 1991; 2 Jul 1990; vp; US PATENT DOCUMENT 5,023,061/A/; Patent and Trademark Office, Box 9, Washington, DC 20232 (United States); ?: 2 Jul 1990
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Bespalova, O.V.; Boboshin, I.N.; Varlamov, V.V.; Ishkhanov, B.S.; Romanovskij, E.A.; Spasskaya, T.I.
LIII International meeting on nuclear spectroscopy and nuclear structure (Nucleus-2003). Book of abstracts2003
LIII International meeting on nuclear spectroscopy and nuclear structure (Nucleus-2003). Book of abstracts2003
AbstractAbstract
No abstract available
Original Title
Osobennosti nejtronnoj odnochastichnoj struktury yadra 4096Zr56
Primary Subject
Source
Vlasnikov, A.K. (ed.); Rossijskaya Akademiya Nauk, Moscow (Russian Federation); Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Moscow (Russian Federation); Nauchno-Issledovatel'skij Inst. Yadernoj Fiziki im. D.V. Skobel'tsyna, Moscow (Russian Federation); Sankt-Peterburgskij Gosudarstvennyj Univ., Sankt-Peterburg (Russian Federation); Nauchno-Issledovatel'skij Inst. Fiziki im. V.A. Foka, Sankt-Peterburg (Russian Federation); Ob''edinnenyj Inst. Yadernykh Issledovanij, Dubna (Russian Federation); 345 p; ISBN 5-98340-004-5;
; 2003; p. 59, 291; 53. International meeting on nuclear spectroscopy and nuclear structure (Nucleus-2003); 53. Mezhdunarodnoe soveshchanie po yadernoj spektroskopii i strukture atomnogo yadra (Yadro-2003); Moscow (Russian Federation); 7-10 Oct 2003; 1 ref., 1 fig.

Record Type
Book
Literature Type
Conference
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AbstractAbstract
[en] New developments in the description of finite nuclei are discussed
Primary Subject
Secondary Subject
Source
Jolos, R.; Joint Inst. for Nuclear Research, Dubna (Russian Federation); 397 p; 1993; p. 184-193; International Conference on Nuclear Structure and Nuclear Reactions at Low and Intermediate Energies; Dubna (Russian Federation); 15-19 Sep 1992
Record Type
Miscellaneous
Literature Type
Conference; Numerical Data
Report Number
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AbstractAbstract
[en] We present a detailed analysis of spectra and other observables for the entire chain of Zr isotopes, from neutron number 52 to 70, in the framework of the interacting boson model with configuration mixing. The results suggest a remarkable interplay of multiple quantum phase transitions (QPTs). One type of QPT involves an abrupt crossing of normal and intruder configurations, superimposed on a second type of QPT involving gradual shape-changes within each configuration.
Primary Subject
Source
Available from http://www.bjp-bg.com/papers/bjp2019_4_247-258.pdf
Record Type
Journal Article
Journal
Bulgarian Journal of Physics (Print); ISSN 1310-0157;
; v. 46(4); p. 247-258

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Zook, A.C.
California Univ., Berkeley (USA)1978
California Univ., Berkeley (USA)1978
AbstractAbstract
[en] The relative abundances of the six stable or nearly-stable isotopes of zirconium were measured for three S stars, R Cyg, V Cnc, and R Gem. The method of analysis utilized the isotopic splitting of the head of the 1Pi - 1EPSILON (0,1) head of ZrO, with the abundances being determined by comparing the observed stellar profile of intensity vs. wavelength with synthetic spectra calculated by the Minnaert interpolation scheme for a single-slab LTE stellar atmosphere. The presence of the long-lived unstable isotope 93Zr supports the hypothesis that nucleosynthesis is taking place in the S stars, while the absence of the r-process isotope 96Zr supports the hypothesis that the s process is the mechanism responsible for this nucleosynthesis. The observed isotopic abundances suggest a value for the integrated neutron flux of tau = 0.5 +- 0.1 mb-1, corresponding to an average of about 50 neutrons captured per seed nucleus
Primary Subject
Source
1978; 82 p; University Microfilms Order No. 80-00,589; Thesis (Ph. D.).
Record Type
Report
Literature Type
Thesis/Dissertation
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Snyder, T.S.; Lee, E.D.
Westinghouse Electric Corp., Pittsburgh, PA (United States)1992
Westinghouse Electric Corp., Pittsburgh, PA (United States)1992
AbstractAbstract
[en] This patent describes a continuous chromatographic process for the simultaneous separation of each of the isotopes of zirconium in a sample containing a mixture of zirconium isotopes to produce substantially pure fractions of each of the separated isotopes. It comprises loading a substantially vertical chromatographic separation column having an effective column height sufficient to resolve each the zirconium isotope into a distinct product fraction having a purity greater than 90% with a cation exchange resin including pentavalent phosphorus-derived active groups having a strong affinity for zirconium cations and complexes thereof; preparing an aqueous feed solution of ionic zirconium from the sample having a pH of between about 3 and 4 from a solubility limit of about 90 g/l; preparing an eluant capable of displacing zirconium ions from the exchange resin, wherein the eluant is an aqueous solution of a strong mineral acid having a normality greater than one; feeding the aqueous zirconium feed solution to the top of the located chromatographic separation column so that the feed solution begins to travel down the column
Primary Subject
Secondary Subject
Source
5 May 1992; 19 Jul 1990; [10 p.]; US PATENT DOCUMENT 5,110,566/A/; Patent and Trademark Office, Box 9, Washington, DC 20232 (United States); ?: 19 Jul 1990
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Ermittlung der Biokinetik von Zirkonium in Humanstudien mit stabilen Isotopen
Primary Subject
Source
71. Annual meeting 2007 and DPG-spring meeting of the division condensed matter; Regensburg (Germany); 26-30 Mar 2007; Also available online: http://www.dpg-tagungen.de/index_en.html; Session: ST 6.3 Tue 10:30 Ch 12.0.16
Record Type
Journal Article
Literature Type
Conference
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; v. 42(4); [1 p.]

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