نتایج جستجو برای: shell sections
تعداد نتایج: 143387 فیلتر نتایج به سال:
The structure of the halo nucleus 11Be has been studied using the reaction 9Be(11Be,10Be+gamma)X at 60 MeV/nucleon. The ground state structure of 11Be is determined by comparing the experimental cross sections to a calculation combining spectroscopic factors from the shell model with l-dependent single-particle cross sections obtained in an eikonal model. This experiment shows the dominant 1s s...
The title compound was made by fusion of a stoichiometric mixture of the pure elements at 500 degrees C. The structure (monoclinic, P2(1)/c, Z = 8, a = 17.037(6), b = 12.253(1), c = 18.105(4) A, beta = 117.24(2) degrees) is made of alternating one- and two-dimensional sections with the same composition of Cs(5)In(3)As(4), and can be considered as two coexisting polymorphic forms of the same com...
A general linear stability analysis of simple metal nanowires is presented using a continuum approach that correctly accounts for material-specific surface properties and electronic quantum-size effects. The competition between surface tension and electron-shell effects leads to a complex landscape of stable structures as a function of diameter, cross section, and temperature. By considering ar...
We present the result of a theoretical study of inclusive quasi free electrofission of 238U. The off-shell cross sections for the quasi free reaction stage have been calculated within the Plane Wave Impulse Approximation (PWIA), using a Macroscopic -Microscopic description of the proton and neutron single particle momentum distributions. Electron wave function distortion corrections were includ...
Based on the shell model for Gamow-Teller and the random phase approximation for forbidden transitions, we calculate cross sections for inelastic neutrino-nucleus scattering (INNS) under supernova (SN) conditions, assuming a matter composition given by nuclear statistical equilibrium. The cross sections are incorporated into state-of-the-art stellar core-collapse simulations with detailed energ...
-The inward inversion is one of the large deformations phenomenon in which the material deform inside the geometry. This phenomenon has been of great interest for its constant force displacement graph of deformation. The energy absorption through inward inversion can be of great use for devising the apparatus to absorb energy for impact or crash. The inward inversion to different shell section ...
A physical model for the simulation of x-ray emission spectra from samples irradiated with kilovolt electron beams is proposed. Inner shell ionization by electron impact is described by means of total cross sections evaluated from an optical-data model. A double differential cross section is proposed for bremsstrahlung emission, which reproduces the radiative stopping powers derived from the pa...
The Stark deceleration method exploits the concepts of charged particle accelerator physics to produce molecular beams with a tunable velocity. These tamed molecular beams offer interesting perspectives for precise crossed beam scattering studies as a function of the collision energy. The method has advanced sufficiently to compete with state-of-the-art beam methods that are used for scattering...
Experimental values for r.m.s. charge density radii show deviations from a simple A dependence of several percent for statically deformed nuclei and around shell closures. These data, for both stable nuclei and nuclei away from the valley of stability, are well described by Hartree-Fock-Bogolyubov calculations carried out at Bruyères-le-Châtel. By using the neutron and proton r.m.s. radii from ...
Fully quantum state selected and resolved inelastic scattering of NO(X) by krypton has been investigated. Initial Λ-doublet state selection is achieved using an inhomogeneous hexapole electric field. Differential cross sections and even-moment polarization dependent differential cross sections have been obtained at a collision energy of 514 cm(-1) for both spin-orbit and parity conserving and c...
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