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Madansky, L.; Lee, Y.K.
Johns Hopkins Univ., Baltimore, Md. (USA)1977
Johns Hopkins Univ., Baltimore, Md. (USA)1977
AbstractAbstract
[en] A new program studying the behavior of nuclear matter under very high excitation was begun at the Bevatron with experiments designed to study the gamma radiation emitted from central collisions of heavy ions. A system was partially completed that made use of a multiplicity detector as a signature of a central collision. The system was surrounded by gamma detectors for both the nuclear and high-energy range; such an arrangement yielded a very large acceptance. A preliminary experiment showed the feasibility of the system and gave the first results of correlations of gamma rays with such collisions. Some details of both the system and the preliminary results are described. Experiments on the measurement of nuclear moments from beta emission are reviewed, and the final results for the latest measurements on 9Li are given. Results of recent measurements on gamma polarization from high-spin states of 105-109Cd are also presented. Studies of electrons resulting from heavy ion collisions using a special high-acceptance beta spectrometer are described. The preliminary results indicate the beginnings of effects that are complements of the so-called combined atom x-ray phenomena. A new program for the study of gamma rays and neutrons produced in the capture of pi meson of nuclei are described with some new results on the excitation of high-spin states. Finally, a reprint of a recent evaluation of some old data concerned with the conserved vector current theory is added
Original Title
The Johns Hopkins Univ., May 1, 1976--July 31, 1977
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1977; 150 p; Available from NTIS., PC A07/MF A01
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Report
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Progress Report
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AbstractAbstract
No abstract available
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Journal Article
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J. Opt. Soc. Amer; v. 62(4); p. 548-554
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No abstract available
Original Title
Vies moyennes de quelques niveaux de hautes energies dans le dysprosium 160
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Journal Article
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Compt. Rend., Ser. B; v. 274(14); p. 896-899
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AbstractAbstract
[en] The isotope shift in the spark spectrum of dysprosium was studied by means of a photoelectric recording Fabry-Perot spectrometer with digital data output. For 29 lines the isotope shift of 162Dy and 164Dy was measured in order to check the mixing of the three configurations 4f95d6s,4f95d2, and 4d106p calculated by Wyart. By means of the sharing rule the configuration mixing could be confirmed as a whole. In the ground state configuration the influence of relativistic effects was demonstrated and explained by theory. The order of magnitude of crossed-second-order effects contributing to the isotope shift of 4f106s6I and 4Icould be estimated. In three lines the isotope shift of all stable Dy isotopes was measured. Mass shift and field shift were separated by comparison with results obtained in the arc spectrum. (orig.)
[de]
Die Isotopieverschiebung im Funkenspektrum von Dysprosium wurde unter Verwendung eines Fabry-Perot-Spektrometers mit photoelektrischem Nachweis und digitaler Datenausgabe untersucht. Um die von Wyart berechnete Mischung der drei Konfigurationen 4f95d6s, 4f95d2 und 4f106p zu pruefen, wurde an 29 Linien die Isotopieverschiebung von 162Dy und 164Dy gemessen. Mit Hilfe der Verteilungsregel konnte die Konfigurationsmischung insgesamt bestaetigt werden. Der Einfluss von relativistischen Effekten auf die Grundzustandskonfiguration wurde demonstriert und theoretisch erklaert. Die Groessenordnung der zur Isotopieverschiebung der 4f106s6 I- und 4I -Zustaende beitragenden Krenzeffekte 2.Ordnung konnte abgeschaetzt werden. Bei drei Linien wurde die Isotopieverschiebung aller stabilen Dy-Isotope gemessen. Die Massen- und Feldverschiebung wurde durch Vergleich mit Ergebnissen im Bogenspektrum getrennt. (orig.)Primary Subject
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Journal Article
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Z. Phys., A; v. 286(3); p. 235-241
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AbstractAbstract
[en] Magneto-optical traps (MOTs) of highly magnetic lanthanides open the door to explorations of novel phases of strongly correlated matter such as lattice supersolids and quantum liquid crystals. We recently reported the first MOTs of the five high-abundance isotopes of the most magnetic atom, dysprosium. Described here are details of the experimental technique employed for repumper-free Dy MOTs containing up to half a billion atoms. Extensive characterization of the MOTs' properties--population, temperature, loading, metastable decay dynamics, and trap dynamics--is provided.
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(c) 2010 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
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Majdikov, V.Z.; Surovitskaya, N.T.; Nemets, O.F.
Summaries of reports of 32. Conference on nuclear spectroscopy and nuclear structure1982
Summaries of reports of 32. Conference on nuclear spectroscopy and nuclear structure1982
AbstractAbstract
No abstract available
Original Title
Issledovanie irast-izomerov po ikh avtoionizatsii
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AN SSSR, Moscow; Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow; AN Ukrainskoj SSR, Kiev. Inst. Yadernykh Issledovanij; p. 92; 1982; p. 92; 32. Conference on nuclear spectroscopy and nuclear structure; Kiev, Ukrainian SSR; 16 - 18 Mar 1982; Short note.
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Miscellaneous
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[en] The superdeformed bands in Tb and Dy isotopes are analyzed by using the kinematic moments of inertia formula J(1)=2α + 4/3βω2+6/5γω4 in order to extract level spin. The results show that the calculated J(1) of 20 superdeformed bands are agreement excellently with that of extracted from expression ℎ2(2I - 1)/Eγ(I). With the parameters determined by J(1) fitting, the calculated values of dynamic moments of inertia J(2) are also agreement with that of extracted from experiments. All of these show authors' assignment of the level spins is reliable. In particular, the spin of the lowest level of the first discovered high-spin SD band 152Dy(1) predicted to be I0=26 is more proper
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Journal of Anhui University. Natural Sciences; ISSN 1000-2162;
; v. 25(4); p. 42-49

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ALPHA DECAY RADIOISOTOPES, ANGULAR MOMENTUM, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, DEFORMED NUCLEI, DYSPROSIUM ISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, EVEN-EVEN NUCLEI, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOTOPES, NUCLEI, PARTICLE PROPERTIES, RADIOISOTOPES, RARE EARTH NUCLEI
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Fry, C.; Thoennessen, M., E-mail: thoennessen@nscl.msu.edu2013
AbstractAbstract
[en] Currently, thirty-one dysprosium, thirty-two holmium, thirty-two erbium, thirty-three thulium, and thirty-one ytterbium isotopes have been observed and the discovery of these isotopes is described here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented
Primary Subject
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S0092-640X(13)00024-7; Available from http://dx.doi.org/10.1016/j.adt.2012.05.004; Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Matsuura, Haruaki; Okada, Isao
Funding organisation: Ministry of Education, Science and Culture, Tokyo (Japan)1996
Funding organisation: Ministry of Education, Science and Culture, Tokyo (Japan)1996
AbstractAbstract
[en] The isotope effect on the internal mobility of the dysprosium ion in molten dysprosium chloride has been measured from 973 to 1,073 K by countercurrent electromigration. Heavier Dy isotopes have been enriched toward the anode. The mass effect defined by μ = (Δu/uDy)/(ΔM/MDy) has been calculated to be -0.032, where Δu is the difference in the mobilities of M (mass number) = 160, 161, 163, or 164 with reference to that of M = 162. A comparison of this value with those previously determined for other molten metal chloride systems suggests that the main electrically conducting species containing Dy is the trivalent cation and not the species shown to exist in the melt by other techniques
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[en] The phenomenon of identical bands is studied by analyzing the distributions of fractional changes in the dynamical moments of inertia of pairs of bands in superdeformed (SD) nuclei. These distributions are found to exhibit a peak with a centroid at nearly zero. Their widths increase in going from the SD bands in the mass A ∼ 150, to the SD bands in the mass ∼190 and to the normally-deformed bands in the rare-earth region. These differences may be attributed to the weaker pairing correlations and the stabilizing role of intruder orbitals on the structures of SD bands. Precise level lifetimes have been measured for various pairs of identical SD bands in Gd and Dy isotopes. By comparing the derived quadrupole moments with calculations performed in the framework of the cranking Skyrme-Hartree-Fock model, it is shown that, independently of the intrinsic configuration and of the proton and neutron numbers, the charge moments calculated with respect to the doubly-magic SD core of 152Dy can be expressed in terms of independent contributions from the individual hole and particle orbitals. (author)
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Exotic Nuclear Shapes. Pt. 1; Debrecen (Hungary); 12-17 May 1997; 42 refs.
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