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AbstractAbstract
[en] A stirred aqueous solution of alkali hydroxide or carbonate or ammonium hydroxide or carbonate is reacted with a suitable solid crystalline Ce(IV) salt such as cerium(IV) sulfate or nitrate or ammonium cerium(IV) sulfate or nitrate. The amount of the hydroxide or carbonate must be equal to or higher than the stoichiometric quantity. The Ce salt may contain as much as 50% other rare earth elements. The product can be characterized by the formula CeO2.xH2O with x approaching 2, and it roughly retains the macrostructure of the starting solid salt. The procedure is easy to perform and has low energy demands. It can find application as the final step in the preparation of a hydroxide cerium concentrate or as an intermediate step in the preparation of CeO2. The suspension can be easily filtered, and a product which can be used as a glass polishing powder can be obtained by drying and calcination of the filter cake. (P.A.)
Original Title
Zpusob pripravy hydratu oxidu cericiteho
Primary Subject
Source
16 Jan 1989; 13 Aug 1986; 4 p; CS PATENT DOCUMENT 257043/B1/; CS PATENT APPLICATION PV 5980-86.J; Application date: 13 Aug 1986
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Gill, R.L.; Chrien, R.E.; Shmid, M.; Gowdy, G.M.; Liou, H.I.; Chu, Y.Y.; Casten, R.F.; Warner, D.D.; Stelts, M.L.; Brenner, D.S.
Annual report 19811982
Annual report 19811982
AbstractAbstract
No abstract available
Primary Subject
Source
Gruemmer, F.; Mayer-Boericke, C.; Schult, O. (eds.); Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Kernphysik; 156 p; Mar 1982; p. 53-54; Published in summary form only.
Record Type
Report
Literature Type
Numerical Data
Report Number
Country of publication
ANGULAR MOMENTUM, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, DATA, DAYS LIVING RADIOISOTOPES, ENERGY-LEVEL TRANSITIONS, EVEN-EVEN NUCLEI, INFORMATION, INTERMEDIATE MASS NUCLEI, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEI, NUMERICAL DATA, PARTICLE PROPERTIES, RADIOISOTOPES, RARE EARTH NUCLEI, SECONDS LIVING RADIOISOTOPES, STABLE ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
International Atomic Energy Agency, Vienna (Austria); Panel proceedings series; p. 143-155; 1972; IAEA; Vienna; Panel on the analytical chemistry of nuclear fuels; Vienna, Austria; 13 Jul 1970
Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The level structure of light cerium isotopes has been studied
Primary Subject
Source
Singh, P.; Pant, L.M. (Nuclear Physics Div., Bhabha Atomic Research Centre, Mumbai (India)) (eds.); Board of Research in Nuclear Sciences, Dept. of Atomic Energy, Mumbai (India); 660 p; Dec 2004; p. 152-153; 47. DAE-BRNS symposium on nuclear physics; Banaras (India); 6-10 Dec 2004; 7 refs., 3 tabs.
Record Type
Book
Literature Type
Conference
Country of publication
BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CERIUM ISOTOPES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, ENERGY-LEVEL TRANSITIONS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, INTERNAL CONVERSION RADIOISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MATHEMATICAL MODELS, MINUTES LIVING RADIOISOTOPES, MULTIPOLE TRANSITIONS, NUCLEAR MODELS, NUCLEI, RADIOISOTOPES, RARE EARTH NUCLEI, SECONDS LIVING RADIOISOTOPES, STABLE ISOTOPES
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
Walters, W.B.; Chung, C.; Brenner, D.S.; Gill, R.; Shmid, M.; Chrien, R.; Liou, H.I.; Gowdy, G.; Stelts, M.; Chu, Y.Y.
Proceedings of the 4th international conference on nuclei far from stability1981
Proceedings of the 4th international conference on nuclei far from stability1981
AbstractAbstract
[en] The decays of the neutron-rich nuclides 142La, 144La, 146La and 148La to the levels of the transitional nuclides 142Ce, 144Ce, 146Ce and 148Ce, respectively, have been studied using mass-separated sources. Angular correlation studies have been employed to identify new excited 0+ levels in 146Ce and support spin and parity assignments for 1-, 3-, 2+, 3+, 4+ and 6+ levels in 144Ce and 146Ce. An excited 0+ level in 148Ce is indicated by coincidence ratios and electron studies, while no clear evidence can be found for the location an excited 0+ level below 2 MeV in 144Ce. The resulting isotonic and isotopic systematics are discussed in terms of the transition from the closed shells at N = 82 and Z = 50 to the region of deformed nuclides. (orig.)
Primary Subject
Source
European Organization for Nuclear Research, Geneva (Switzerland); 809 p; 20 Jul 1981; p. 557-561; 4. international conference on nuclei far from stability; Helsingoer, Denmark; 7 - 13 Jun 1981
Record Type
Report
Literature Type
Conference; Numerical Data
Report Number
Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CORRELATIONS, DATA, DAYS LIVING RADIOISOTOPES, DECAY, ENERGY LEVELS, EVEN-EVEN NUCLEI, INFORMATION, INTERMEDIATE MASS NUCLEI, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEAR DECAY, NUCLEI, NUMERICAL DATA, RADIOISOTOPES, RARE EARTH NUCLEI, SECONDS LIVING RADIOISOTOPES, STABLE ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In this study, we determined the most appropriate Hamiltonian that is needed for the present calculations of energy levels and B(E2) values of 128-138Ce nuclei which have a mass around A≅ 130 using the interacting boson model (IBM). Using the best fitted values of parameters in the Hamiltonian of the IBM-2, we have calculated energy levels and B(E2) values for a number of transitions in 128,130,132,134,136,138Ce. The results were compared with the previous experimental and theoretical (PTSM model) data and it was observed that they are in good agreement. Also some predictions of this model have better accuracy than those of PTSM model. It has turned out that the interacting boson approximation (IBA) is fairly reliable for calculating spectra in the entire set of 128,130,132,134,136,138Ce isotopes and the quality of the fits presented in this paper is acceptable. (author)
Primary Subject
Source
36 refs., 3 figs.
Record Type
Journal Article
Journal
Pramana; CODEN PRAMCI; v. 68(5); p. 769-778
Country of publication
BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CERIUM ISOTOPES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, ENERGY-LEVEL TRANSITIONS, EVEN-EVEN NUCLEI, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIE GROUPS, MATHEMATICAL MODELS, MINUTES LIVING RADIOISOTOPES, MULTIPOLE TRANSITIONS, NUCLEAR MODELS, NUCLEI, PARTICLE PROPERTIES, RADIOISOTOPES, RARE EARTH NUCLEI, SHELL MODELS, STABLE ISOTOPES, SU GROUPS, SYMMETRY GROUPS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Mulligan, T.J.
Florida State Univ., Tallahassee (USA)1972
Florida State Univ., Tallahassee (USA)1972
AbstractAbstract
No abstract available
Primary Subject
Source
1972; 153 p; University Microfilms Order No. 72-23,099.; Thesis. (Ph.D.).
Record Type
Report
Literature Type
Thesis/Dissertation
Country of publication
BEAMS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CERIUM ISOTOPES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, INTERMEDIATE MASS NUCLEI, ION BEAMS, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEI, NUCLEON BEAMS, PARTICLE BEAMS, RADIOISOTOPES, SECONDS LIVING RADIOISOTOPES, STABLE ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Thayer, H.L.; Forest, D.H.; Griffith, J.A.R.; Tungate, G.; Billowes, J.; Campbell, P.; Flanagan, K.T.; Moore, I.D.; Moore, R.; Dendooven, P.; Huikari, J.; Jokinen, A.; Nieminen, A.; Aeystoe, J.
Exotic nuclei and atomic masses. Proceedings2003
Exotic nuclei and atomic masses. Proceedings2003
AbstractAbstract
[en] High resolution crossed beam resonance fluorescence laser spectroscopy has been performed on an atomic beam of naturally occurring cerium, and isotope shifts have been measured in several transitions. Changes in mean square charge radius, δ left angle r2 right angle, have been extracted using the King plot technique and show the characteristic increase at the N=82 neutron shell closure. The measurements form the basis for further investigations of radioactive isotopes and isomers on both sides of the shell closure. (orig.)
Primary Subject
Source
Aeystoe, J; Dendooven, P.; Jokinen, A.; Leino, M. (eds.); 559 p; ISBN 3-540-00101-8;
; 2003; p. 85; ENAM 2001: 3. international conference on exotic nuclei and atomic masses; Haemeenlinna (Finland); 2-7 Jul 2001

Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
Related RecordRelated Record
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AbstractAbstract
[en] Cerium is an element of rare earth group which is called lanthanide series. It is found in the ores like monazite and xenotime which are the tailings of tin mines in the south of Thailand. Cerium is used mostly as lens polishing powder besides the applications in other industries. In this study, cerium extracted from monazite ore breakdown by alkaline process was used for the preparation of lens polishing powder. Cerium hydroxide cake from the process was dissolved by hydrochloric acid and precipitated with oxalic acid. The oxalate precipitate then was calcined to oxide powder and its particle size was measured. Precipitation conditions being studied are concentration of feed cerium chloride solution, concentration of oxalic acid used for the precipitation, concentration of sulfuric acid used as precipitation control reagent and the precipitation temperature. It was found that the appropriate precipitation conditions yielded the fine oxide powder with particle size about 12μm. The oxide powder can be ground to the size of 1-3 μm which is suitable for making lens polishing powder
Primary Subject
Source
Oct 2003; 3 p; 29. Congress on Science and Technology of Thailand; Golden Jubilee Convention Hall, Khon Kean University (Thailand); 20-22 Oct 2003; Also available from The Science Society of Thailand under the Patronage of His Majesty the King, Bangkok (TH)
Record Type
Miscellaneous
Literature Type
Conference; Numerical Data
Report Number
Country of publication
CERIUM COMPOUNDS, CHALCOGENIDES, CHLORIDES, CHLORINE COMPOUNDS, CLEANING, DATA, HALIDES, HALOGEN COMPOUNDS, HYDROGEN COMPOUNDS, HYDROXIDES, INFORMATION, MATERIALS, MINERALS, NUMERICAL DATA, OXIDES, OXYGEN COMPOUNDS, PHOSPHATE MINERALS, RADIOACTIVE MATERIALS, RADIOACTIVE MINERALS, RARE EARTH COMPOUNDS, SEPARATION PROCESSES, THORIUM MINERALS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The absorption spectra below the 4d threshold of cerium in Ce metal, CeF3 and CeO2 compounds were measured by using a CDM (Constant Deviation Monochromator) at the Photon Factory, KEK. The difference in structure between these spectra is discussed. The structure appeared in CeO2 were considered to be due to the tetravalent configuration of cerium (Ce4+) in the ground state. (author)
Primary Subject
Record Type
Journal Article
Journal
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