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Mise en evidence d'etats d'energie tres elevee du noyau 12C par la capture radiative 9Be (3He,γ)12C
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Compt. Rend., Ser. B; v. 275(18); p. 669-672
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Lyon, G.L.
Tenth Conference of the Australian and New Zealand Society for Mass Spectrometry, Dunedin, New Zealand, 26-29 August 1986
Tenth Conference of the Australian and New Zealand Society for Mass Spectrometry, Dunedin, New Zealand, 26-29 August 1986
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[en] Abstract only
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65 p; 1986; p. 65; Australian and New Zealand Society for Mass Spectrometry; Dunedin (New Zealand); 10. Conference of the Australian and New Zealand Society for Mass Spectrometry; Dunedin (New Zealand); 26-29 Aug 1986
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[en] Transition energies, incremental alignments of angular momentum, dynamic moments of inertia of triaxial superdeformed bands in rare-earth nuclei have been examined systematically. It is found that the incremental alignments are nearly constant and their dynamic moments of inertia are quite similar. Therefore these triaxial superdeformed bands in rear-earth nuclei are identical bands
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High Energy Physics and Nuclear Physics; ISSN 0254-3052;
; v. 24(6); p. 541-545

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[en] The 64Ni(4He, 8He)60Ni reaction was used at 58-MeV bombarding energy with the quadrupole-dipole-dipole-dipole magnet spectrograph, giving an improved value of the 8He mass excess of 31.611 +- 0.017 MeV
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Phys. Rev., C; v. 12(5); p. 1511-1515
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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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Kuesters, H.
Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Neutronenphysik und Reaktortechnik; Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Projekt Wiederaufarbeitung und Abfallbehandlung
Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Neutronenphysik und Reaktortechnik; Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Projekt Wiederaufarbeitung und Abfallbehandlung
AbstractAbstract
[en] A reliable prediction of the in-pile and out-of-pile physics characteristics of nuclear fuel is one of the objectives of present-day reactor physics. The paper describes the main production paths of important actinides for light water and fast breeder reactors. The accuracy of recent nuclear data is examined by comparisons of theoretical predictions with the results from post-irradiation analysis of nuclear fuel from power reactors, and partly with results obtained in zero-power facilities. A world-wide comparison of nuclear data to be used in large fast power reactor burn-up and long term considerations is presented. The needs for further improvement of nuclear data are discussed. (orig.)
[de]
Die zuverlaessige Vorhersage der physikalischen Charakteristika von Kernbrennstoff innerhalb und ausserhalb des Reaktors ist eine der Aufgaben der heutigen Reaktorphysik. Der Bericht beschreibt die Hauptwege fuer die Erzeugung einiger wichtiger Aktiniden in Leichtwasserreaktoren und schnellen Bruetern. Die Genauigkeit von Kerndaten wird ueberprueft durch Vergleiche von theoretischen Vorhersagen mit Ergebnissen aus der Analyse von Nachbestrahlungsuntersuchungen an Brennstoffen aus Leistungsreaktoren und auch an einigen Ergebnissen aus Nulleistungsanordnungen. Ein weltweiter Vergleich von Kerndaten zur Verfolgung von Langzeitanalysen in grossen schnellen Reaktoren wird dargestellt. Anforderungen zur weiteren Verbesserung von Kerndaten werden diskutiert. (orig.)Primary Subject
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Apr 1980; 7 p
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[en] The plant physiological and meteorological problems which must be considered by isotope dendroclimatologists are discussed. Stable isotope ratios in the cellulose and lignin across three growth rings of a Pinus radiata are presented. The C-H hydrogens of cellulose were found to be more than 200/00 depleted in the summer as compared with the winter and probably record the annual temperature cycle. Delta13C measurements on both cellulose and lignin showed an enrichment of 20/00 in summer as compared with winter wood, giving a temperature coefficient of at least +0.20/00/0C. This should be adequate for paleoclimatic studies provided one can assume that the delta13C of the atmosphere has remained constant or is known. Some possible future developments in the field of isotope dendroclimatology are discussed.(auth.)
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Robinson, B.W. (ed.) (Department of Scientific and Industrial Research, Lower Hutt (New Zealand). Inst. of Nuclear Sciences); New Zealand DSIR bulletins; p. 61-66; 1978; p. 61-66; DSIR Science Information Division; Wellington; International stable isotope conference; Lower Hutt, New Zealand; 4 - 6 Aug 1976; ISSN 0077-961X; 

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[en] Although four decades ago it had been conclusively shown that the first excited 02+ state in 15666Dy90 was a pairing isomer, the lessons of this identification has taken a long time to connect with the Nuclear Structure Community. The 02+ states that can be populated significantly with two particle neutron transfer, all have large enough cross-sections to demonstrate that simple monopole pairing in theoretical descriptions will be insufficient. The conclusion that these states cannot be associated with time-dependent β vibrations of the nuclear shape is also supported by their very weak excitation in inelastic scattering processes such as (d,d'). Blocking of the coupling of the single particle neutrons in odd nuclei to the 02+ states near N=90 have shown that a major part of their configurations is a pair of neutrons in the [505]11/2- Nilsson orbit. This high-K orbit is extruded from the h11/2 shell to the Fermi surface by the increasing deformation caused by adding neutrons outside the N=82 core. These data confirm the separation of prolate-prolate and oblate-oblate pairing. At iThemba LABS we have used conventional γ-ray spectroscopy to investigate structures in the pairing gaps of even-even nuclei in the ranges Z=62-70 and N=88-92, in particular to study the systematics of the excited Kπ = 02+2 and 2γ+ positive parity bands. We find that the 02+ bands all have moments-of-inertia that are greater than those of the ground state 01+1 bands, in complete contradiction to the predictions of all Interacting Boson Models (IBM). The larger moments-of-inertia for 02+ bands are consistent with reduced pairing due to the low density of oblate (high-W) orbitals near the Fermi surface. The odd spin members of the γ bands all track the ground state bands while the even spin members can mix with the 01+ and 02+ bands. Indeed the γ bands and 02+ bands cross and interact strongly affecting the signature splittings S(I) observed in the γ bands. The systematic data will be discussed in terms of the Triaxial Projected Shell Model (TPSM) and the 5-Dimensional Collective Model (5-DCM). This document is composed of an abstract and the slides of the presentation. (author)
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IN2P3 - Institut National de Physique Nucleaire et de Physique des Particules, 3 rue Michel Ange, 75794 Paris (France); 1990 p; Nov 2017; p. 118-142; SSNET'17: International conference on shapes and symmetries in nuclei: from experiment to theory; Gif sur Yvette (France); 6-10 Nov 2017; 8 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses
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Agvaanluvsan, U.; Schiller, A.; Becker, J.A.; Berstein, L.A.; Guttormsen, M.; Mitchell, G.E.; Rekstad, J.; Siem, S.; Voinov, A.
Lawrence Livermore National Lab., CA (United States). Funding organisation: US Department of Energy (United States)
Lawrence Livermore National Lab., CA (United States). Funding organisation: US Department of Energy (United States)
AbstractAbstract
[en] Level densities and radiative strength functions in 171Yb and 170Yb nuclei have been measured with the 171Yb(3He,3He(prime) γ)171Yb and 171Yb(3He, αγ)170Yb reactions. A simultaneous determination of the nuclear level density and the radiative strength function was made. The present data adds to and is consistent with previous results for several other rare earth nuclei. The method will be briefly reviewed and the result from the analysis will be presented. The radiative strength function for 171Yb is compared to previously published work.
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9 Jun 2003; 10 p; W-7405-ENG-48; Available from http://www.llnl.gov/tid/lof/documents/pdf/243260.pdf; PURL: https://www.osti.gov/servlets/purl/15004543-4n5Uwj/native/; PDF-FILE: 11; SIZE: 0.2 MBYTES
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Astrophysical Journal; v. 176(3); p. L127-L129
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