نتایج جستجو برای: nuclear reaction and scattering
تعداد نتایج: 16945123 فیلتر نتایج به سال:
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
چکیده ندارد.
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...
in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...
An effective field theory (EFT) for a nuclear reaction at low energies is studied. The astrophysical $S$-factor of radiative $\alpha$ capture on $^{12}$C the Gamow-peak energy, $T_G=0.3$ MeV, fundamental quantity in nuclear-astrophysics, and we construct an EFT reaction. To fix parameters appearing Lagrangian, applied to study three reactions: elastic $\alpha$-$^{12}$C scattering energies, $E1$...
We present calculations for ∆ excitation in the (K + , K +) reaction in nuclei. The background from quasielastic K + scattering in the ∆ region is also evaluated and shown to be quite small in some kinematical regions, so as to allow for a clean identification of the ∆ excitation strength. Nuclear effects tied to the ∆ renormalization in the nucleus are considered and the reaction is shown to p...
The cross section for the A(e, eγ)A reaction is calculated, investigating the contribution from the nuclear target with respect to the radiative corrections from the electron. The reaction mechanism is studied for photon emission in the ∆-resonance region, varying the scattering geometry and analyzing the most favourable kinematical conditions to extract information on the nuclear system. PACS ...
The differential cross sections of the forward coherent $\omega$ and $\phi$ mesons photoproduction from nuclei have been calculated using Glauber model for nuclear reaction. measured section elementary reaction, i.e., $\gamma N \to \omega (\phi) N$ are used as input in model. experimentally determined free-space scattering parameters quoted to evaluate meson nucleus interactions. sensitivity Fe...
Collisions induced by (9,10,11)Be on a 64Zn target at the same c.m. energy were studied. For the first time, strong effects of the 11Be halo structure on elastic-scattering and reaction mechanisms at energies near the Coulomb barrier are evidenced experimentally. The elastic-scattering cross section of the 11Be halo nucleus shows unusual behavior in the Coulomb-nuclear interference peak angular...
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