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11.
A. Prévost M. G. Porquet A. Astier I. Deloncle F. Azaiez A. Buta D. Curien O. Dorvaux G. Duchêne B. J. P. Gall F. Khalfallah I. Piqueras M. Rousseau M. Meyer N. Redon O. Stézowski Ts. Venkova R. Lucas A. Bogachev 《The European Physical Journal A - Hadrons and Nuclei》2004,22(3):391-395
The 84Se nucleus has been produced as fission fragment in the fusion reaction 18O + 208Pb at 85MeV bombarding energy and studied with the Euroball IV array. Medium-spin states of this neutron-rich isotope have been identified for the first time. Its level scheme has been obtained up to 4.9MeV excitation energy and spin I 7. Its structure is interpreted by analogy with those of the stable heavier isotones. The evolution of the energy of the N = 50 neutron-core excitation is discussed as a function of the proton number. 相似文献
12.
Three dimensional (Z‐dependence), collective and individual semi‐empirical formulae for L X‐ray production and ionization cross section by protons impact within corrected ECPSSR theory and updated experimental data: a review
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B. Deghfel A. Kahoul I. Derradj A. Bendjedi F. Khalfallah Y. Sahnoune A. Bentabet M. Nekkab 《X射线光谱测定》2016,45(5):247-257
In this paper we propose a new three dimensional semi‐empirical formulae for the deduction of L X‐ray production and ionization cross sections by introducing the dependence on the atomic number of the target, noted as ‘Z‐dependence’. The data are also fitted collectively and separately (for each element) by analytical functions to calculate semi‐empirical cross sections. For this purpose, the corrected ECPSSR model (noted as eCPSSR) and the published experimental data of Lα, Lβ and Lγ X‐ray production and L1, L2 and L3 ionization cross sections in the period (1950–2014) are combined to calculate the semi‐empirical ones for a wide range of elements by proton impact. The semi‐empirical cross sections (for the three x‐rays lines Lα, Lβ, Lγ and the three sub‐shells L1, L2, L3) are then deduced by fitting the available experimental data normalized to their corresponding theoretical values (using the eCPSSR model) giving a better representation of the experimental data for the individual interpolation. At last, a comparison is made between the three semi‐empirical formulae reported in this work. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
13.
Ali Khalfallah Abdlahmid Ayari Boutheina Boughariou Ahmed Hedhli 《Journal of inclusion phenomena and macrocyclic chemistry》2010,67(1-2):1-6
Equimolar reaction of PEG with maleic anhydride in favoring conditions to cyclization is described. The obtained cyclic compounds were submitted to radical addition of 2-F-alkylethanethiol to furnish fluorinated loops. Amphiphilic properties of the latter were investigated by measuring their surface tension and critical micellar concentration CMC. These new amphiphilic compounds may exhibit some interesting interactions with appropriate cations at the surface cells. 相似文献
14.
A. Astier M. -G. Porquet Ts. Venkova I. Deloncle F. Azaiez A. Buta D. Curien O. Dorvaux G. Duchêne B. J. P. Gall F. Khalfallah I. Piqueras M. Rousseau M. Meyer N. Redon O. Stézowski R. Lucas A. Bogachev 《The European Physical Journal A - Hadrons and Nuclei》2006,30(3):541-549
The 84, 85Br nuclei have been produced as fission fragments in the fusion reaction 18O + 208Pb at 85MeV bombarding energy and studied with the Euroball IV array. The high-spin states of the odd-odd 84Br nucleus have been identified for the first time, the observed structure being built on the known 6- isomeric state. High-spin states of 85Br have been observed up to 5.4MeV excitation energy and spin I ∼ 21/2. From angular correlation analysis, spin values have been assigned to most of the 85Br excited states up to 4MeV. None of these excited states has been found to exhibit a delayed decay having T
1/2 > 10ns. All the observed states in 84, 85Br can be described by various proton excitations involving at least the two sub-shells ( πf
5/2 and πp
3/2) located just above the Z = 28 shell closure. 相似文献
15.
Adel Khalfallah 《Comptes Rendus Mathematique》2002,335(3):237-242
In this Note, we construct the moduli space of hyperbolically imbedded manifolds. We recall that the moduli space of compact hyperbolic manifolds has been constructed by Brody and Wright. To construct our moduli space, we use a general criterion to represent analytic functors by coarse moduli spaces due to Schumacher. The objects to deform are couples (X,D) where X is a compact manifold and D is a normal crossing divisor in X such that X?D is hyperbolically imbedded in X. This criterion is based on two ingredients: in our case, the first is the existence of semi-universal logarithmic deformation due to Kawamata. The second is a consequence of a theorem of stability of hyperbolically imbedded spaces through logarithmic deformations. We use the relative-distance of Kobayashi to simplify the proof. To cite this article: A. Khalfallah, C. R. Acad. Sci. Paris, Ser. I 335 (2002) 237–242. 相似文献
16.
17.
M. -G. Porquet A. Astier Ts. Venkova I. Deloncle F. Azaiez A. Buta D. Curien O. Dorvaux G. Duchêne B. J. P. Gall F. Khalfallah I. Piqueras M. Rousseau M. Meyer N. Redon O. Stézowski R. Lucas A. Bogachev 《The European Physical Journal A - Hadrons and Nuclei》2009,40(2):131-141
The odd-odd 88 37Rb51 and 86 35Br51 nuclei have been produced as fission fragments in the fusion reaction 18O$ + $208Pb at 85MeV bombarding energy and studied with the Euroball IV array. Their high-spin level schemes have been built from the triple $ \gamma$ -ray coincidence data and $ \gamma$ - $ \gamma$ angular correlations have been analyzed in order to assign spin and parity values to many observed states. The proposed configurations involve proton excitations from three sub-shells located close to the Fermi levels, $ \pi$ p 3/2 , $ \pi$ f 5/2 , and $ \pi$ g 9/2 , the $ \nu$ d 5/2 neutron acting as a spectator. The residual $ \pi$ $ \nu$ interactions are extracted from the multiplets of states resulting from the $ \pi$ p 3/2 $ \nu$ d 5/2 and $ \pi$ f 5/2 $ \nu$ d 5/2 configurations. The empirical values of the latter are discussed and compared to those known in two similar configurations having j p = j n with l p = l n + 1 , where the role of the tensor force had been highlighted. 相似文献
18.
Mohammed Khalfallah 《Mathematical and Computer Modelling》2009,49(3-4):666-671
The extended homogeneous balance method is used to construct exact traveling wave solutions of the Boussinesq–Burgers equation, in which the homogeneous balance method is applied to solve the Riccati equation and the reduced nonlinear ordinary differential equation. Many exact traveling wave solutions of the Boussinesq–Burgers equation are successfully obtained. 相似文献
19.
Chatillon A Theisen Ch Bouchez E Butler PA Clément E Dorvaux O Eeckhaudt S Gall BJ Görgen A Grahn T Greenlees PT Herzberg RD Hessberger F Hürstel A Jones GD Jones P Julin R Juutinen S Kettunen H Khalfallah F Korten W Le Coz Y Leino M Leppänen AP Nieminen P Pakarinen J Perkowski J Rahkila P Rousseau M Scholey C Uusitalo J Wilson JN Bonche P Heenen PH 《Physical review letters》2007,98(13):132503
A rotational band has been unambiguously observed in an odd-proton transfermium nucleus for the first time. An in-beam gamma-ray spectroscopic study of 101/251Md has been performed using the gamma-ray array JUROGAM combined with the gas-filled separator RITU and the focal plane device GREAT. The experimental results, compared to Hartree-Fock-Bogolyubov calculations, lead to the interpretation that the rotational band is built on the [521]1/2(-) Nilsson state. 相似文献
20.
Adel Khalfallah 《Comptes Rendus Mathematique》2011,349(5-6):259-262
In this Note, we generalize to the almost complex setting, a theorem of Zaidenberg (1983) [13] and Thai (1991) [12] by giving a characterization on hyperbolic embeddability of a locally complete and relatively compact almost complex submanifold in terms of extension of pseudo-holomorphic disks from the punctured unit disk and of limit J-complex lines. 相似文献