Nuclear moments and charge radius changes in platinum isotopes

Isotope shift (IS) and hyperfine structure (HFS) measurements have been performed for^{185, 187, 189, 191, 195}Pt using the PILIS (Post ISOCELE Laser Isobar Separator) apparatus installed at the ISOCELE facility. Magnetic and quadrupole moments have been deduced from the HFS results. The charge radius changes determined for these odd nuclei from the IS results, added to the σ<r²> values of the even-A nuclei are compared to the results of lattice Hartree-Fock+BCS calculations for asymmetric solutions:¹⁸⁵Pt is confirmed to be prolate shaped whereas^{187, 189, 191}Pt are likely triaxial in their ground states.     

亚纯函数的零点和极点的分布与充满圆

本文主要结果的含意是:设f(z)为ρ(0<ρ<∞)级亚纯函数,且在角域D上以0和∞为Borel例外值,若在D内一列趋于∞的弧段上,f^(l)(z)(l≥0)充分接近于一有穷非零复数,则在这列弧段附近,f^(l)(z)不存在ρ级充满圆。这个结果可用以估计亚纯函数及其各级导数的亏值数目。     

Addition d'hydrazone aux oléfines en milieu acide: cycloaddition polaire cationique [3+ + 2]

The stereospecificity and the orientation observed for the addition reaction of acetaldehyde hydrazone with (E)- and (Z)-alkenes in acidic media are compatible with a concerted process of the polar [3⁺ + 2] cycloaddition type.     

Contribution of the triangle graphs to the neutron electric dipole moment

In the Kobayashi-Maskawa model we compute a new contribution to the neutron electric dipole moment induced byCP violating flavour-changing transitions of the typess→d+gluon+γ through heavy quark loops. This contribution, essentially given by the triangle anomaly graph, is by itself gauge invariant. We obtain from this mechanismD _n /e=3.10^?32 cm, one order of magnitude below our previous estimate from usual penguin diagram contributions.     

Fluororganische Synthesen V Darstellung und Abwandlung von Chlorfluorcyclopropanen - Ein gezielter Zugang zu Fluorallylalkoholen

Fluoroorganic Syntheses V. Preparation and Transformation of Chlorofluorocyclopropanes. – A Selective Approach to Fluoroallylic Alcohols Chlorofluorocarbene addition to unsaturated compounds is particularly convenient and efficient in a two-phase system. This method works satisfactorily even if the olefin carries base-sensitive substituents. The resultant chlorofluorocyclopropanes can be ring-opened by silver-salt assisted acetolysis affording 2-fluorallylacetates, which yield 2-fluorallylic alcohols upon saponification.     

The infrared spectra of fused 1,2,4-triazin-5-ones

The IR spectra of a number of fused 1,2,4-triazin-5-ones have been studied and the relevance of the results to triazinone tautomerism is discussed.     

Angular distributions in the dimuon hadronic production at 150 GeV/c

From π^- interactions at 150 GeV/c on a heavy target, we present the final analysis of the dimuon decay angular distribution in the mass interval 4.5–8.5 GeV/c². Results are presented and discussed in various reference frames and are also given in terms of the density matrix elements. Finally the possible contribution of higher-twist effects at largex ₁ is discussed; we find that our data are not compatible with higher twist contributions as proposed by the Berger and Brodsky Model.