Elastic Transfer Inelastic Transfer
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. On the inverse problem in high-energy elastic hadron scattering and the applicability of a representation for the real part of the amplitude / Um estudo sobre o problema inverso do espalhamento elastico de hadrons em altas energias e a aplicabilidade de uma representacao para a parte real da amplitude
The theoretical description of high-energy elastic hadron scattering constitutes an open problem in both, the underlying quantum field theory of strong interactions (QCD) and the phenomenological context. In this work the inverse problem in elastic hadron scattering is discussed in the impact parameter and eikonal frameworks, specifically a study on the empi
Publicado em: 2010
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2. O efeito de estados de estrutura alfa no espalhamento 16O+12C e na reação de captura astrofísica 12C()16O / Effect of alfa states in the 16O+12C scattering and in the 12C+alfa, 8)16O capture reaction of astrophysical interest
Neste trabalho, investigou-se o espalhamento elástico 16O+12C, considerando o efeito da troca de uma partícula alfa entre o projétil e o alvo que conduz aos mesmos núcleos do canal de entrada (transferência elástica). Foram analisadas distribuições angulares em uma faixa de energias que, no referencial de centro de massa, vai de 8,55 MeV até 56,57 M
Publicado em: 2010
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3. Sequential and double sequential fission observed in heavy ion interaction Of (11.67 MeV/u)197Au projectile with 197Au target
The heavy ion interaction of 11.67 MeV/u 197Au + 197Au has been investigated using mica as a passive detector. By employing Solid State Nuclear Track Detection Technique the data of elastic scattering as well as inelastic reaction channel was collected. The off-line data analysis of multi-pronged events was performed by measuring the three-dimensional geomet
Brazilian Journal of Physics. Publicado em: 2009-09
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4. Inverse problem in proton-proton elastic scattering in the impact parameter representations / Problema inverso do espalhamento elastico proton-proton na representacao de parametro de impacto
The Impact Parameter and Eikonal Representations are investigated by means of an empirical analysis of the experimental data on proton-proton elastic scattering, at the highest energy region with experimental information available (six data sets at center of mass energies 19.4 - 62.5 GeV). Making use of a novel model-independent parametrization for the scatt
Publicado em: 2009
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5. Reaction Mechanisms on the 16,18O + 63,65Cu Systems / Mecanismos de Reação nos Sistemas 16,18O + 63,65Cu
The quasi-elastic excitation functions for the systems 16,18O + 63,65Cu have been measured, at the angle 161º and at energies between 30 and 48MeV, in the laboratory reference system. The quasi-elastic term refers to the sum of the elastic scattering, the inelastic scattering and the transfer reactions. Care has been taken in order to obtain high precision
Publicado em: 2007
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6. Phenomenological analysis of proton-proton and antiproton-proton elastic scattering at high energies / Analise fenomenologica dos espalhamentos elasticos proton-proton e antiproton-proton em altas energias
We present a study on proton-proton (pp) and antiproton-proton (¯pp) elastic scattering at high energies, with focus on the behavior of the total cross section, differential cross section and the parameter p (ratio between the real and the imaginary parts of the forward amplitude). These quantities are described by means of a model independent parametrizati
Publicado em: 2007
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7. Elastic, inelastic scatterings and transfer reactions for 16,18O on 58Ni described by the São Paulo potential
We have used a parameter - free potential, obtained from data analysis at sub-barrier energies, to explain our measurements of elastic and several inelastic scattering cross sections for the 16,18O + 58Ni systems at an energy above the barrier. The data were analyzed through extensive coupled-channel calculations. Transfer cross sections could also be explai
Brazilian Journal of Physics. Publicado em: 2005-09
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8. Estudo do efeito da correlação do alvo no espalhamento de elétrons por moléculas pequenas na faixa de energias baixas e intermediária.
In this present work, we have carried out a theoretical investigation on the influence of the target electronic correlation on electron elastic scattering by molecules. Calculated differential, integral and momentum-transfer cross sections on electron elastic scattering by nitrous oxide (N2O) and carbon dioxide (CO2), in low energy range (0.1-20 eV), and car
Publicado em: 2004
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9. Uma analise empirica do espalhamento elastico de hadrons na aproximação eiconal
We find empirical information, from experimental data, about profile, eikonal (impact parameter and momentum transfer spaces) and inelastic overlap functions of the elastic pp scattering between 13.8 GeV £ Ö s £ 62.5 GeV and elastic pp scattering between 13.8 GeV £ Ö s £ 1800GeV. As an introduction to the subject, a review of the eikonal approximation
Publicado em: 1998
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10. Effect of protein dynamics on biological electron transfer
Computer simulations of the effect of protein dynamics on the long distance tunneling mediated by the protein matrix have been carried out for a Ru-modified (His 126) azurin molecule. We find that the tunneling matrix element is a sensitive function of the atomic configuration of the part of the protein matrix in which tunneling currents (pathways) are
The National Academy of Sciences of the USA.