Nuclear Evaporation
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Risk analysis and reliability of the GERDA Experiment extraction and ventilation plant at Gran Sasso mountain underground laboratory of Italian National Institute for Nuclear Physics
Abstract The aim of this study is the risk analysis evaluation about argon release from the GERDA experiment in the Gran Sasso underground National Laboratories (LNGS) of the Italian National Institute for Nuclear Physics (INFN). The GERDA apparatus, located in Hall A of the LNGS, is a facility with germanium detectors located in a wide tank filled with abou
REM, Int. Eng. J.. Publicado em: 2017-09
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2. Tungsten oxide thin films grown by thermal evaporation with high resistance to leaching
Óxidos de tungstênio apresentam diferentes estequiometrias, estruturas cristalinas e morfologias. Estas características são importantes principalmente quando se deseja utilizá-los como fotocatalisadores. Neste trabalho foram obtidos filmes finos de óxido de tungstênio por evaporação térmica sobre substratos de silício (100) recobertos com ouro, aq
J. Braz. Chem. Soc.. Publicado em: 2014-05
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3. Biological sensors based on immune response cells applied to the study of anti-allergic activity of natural compounds. / Utilização de sensores biológicos baseados em células de resposta imune no estudo da atividade antialérgica de substâncias naturais.
Anti-allergic activity of extracts and isolated compounds obtained from natural sources was investigated using the mast-cell based biosensor system. Mast cells release beta-hexosaminidase enzyme which is used as a marker of degranulation. Flavonoids (quercetin-Qc and rutin-Rt) and polyphenolic acids (caffeic acid-Cf and dimethoxy cinnamic acid-Dm) were used
Publicado em: 2009
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4. Nuclear structure of 64Cu / Estrutura nuclear do 64Cu
The main goal of this work is a study of the odd-odd nucleus 64Cu using in-beam gamma-ray spectroscopy. For this study, the fusion-evaporation reaction 51V(16O, 2pn)64Cu at 70 MeV bombarding energy has been performed with the 8-UD Pelletron TANDEM accelerator of the Universidade de São Paulo. The target consisted of a 4.4 mg/cm2 foil of 51V with a 7.0 mg/cm
Publicado em: 2008
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5. Análise sub-ppm de flúor em água pela técnica PIGE / SUB-PPM analysis of fluorine in water by the Pige technique
This work presents a new method for the analysis of fluorine in water, at the tenth of ppm concentration level, based on the PIGE (Particle-Induced Gamma-ray Emission) technique. It is shown that determination of concentrations of this order of magnitude by PIGE requires the use of a preconcentration method. Some attempts of preconcentration of fluorine by a
Publicado em: 2008
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6. Investigation of hyperfine interactions in pure silicon and NTD silicon by means of perturbed angular γ-γ correlation spectroscopy / Investigação de interações hiperfinas em silício puro e silício NTD pela técnica de correlação angular gama-gama perturbada
In the present work, a microscopic investigation of hyperfine interactions in single crystal silicon samples was carried out by means of Perturbed Angular γ-γ Correlation technique (PAC), which is based in hyperfine interactions. In order to achieve these measurements, it was used 111In ->111Cd radioactive probe nuclei, which decay through the we
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2007
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7. Power calibration of the TRIGA mark I nuclear research reactor
This paper presents the results and methodology used to calibrate the thermal power of the TRIGA Mark I IPR-R1 Research Reactor at the Nuclear Technology Development Centre (CDTN), in Belo Horizonte, Brazil. The TRIGA Mark I is a pool type reactor, cooled by water natural convection. The method used in the calibration consisted in the steady-state energy bal
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-09
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8. Fissility of actinide nuclei by 60-130 MeV photons
Nuclear fissilities obtained from recent photofission reaction cross section measurements carried out at Saskatchewan Accelerator Laboratory (Saskatoon, Canada) in the energy range 60-130 MeV for 232Th, 233U, 235U, 238U, and 237Np nuclei have been analysed in a systematic way. To this aim, a semiempirical approach has been developed based on the quasi-deuter
Brazilian Journal of Physics. Publicado em: 2006-12
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9. Spallation physics and the ADS target design
This paper reviews the physics of the spallation which is a nuclear reaction in which a particle (e.g. proton) interacts with a nucleus. Given to the high energy of the incident proton, in a first stage it interacts with the individual nucleons in an intranuclear cascade which leads to the emission of secondary particles (neutrons, protons, mesons, etc.). In
Brazilian Journal of Physics. Publicado em: 2005-09
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10. The utilization of crisp code in hybrid reactor studies
One of the main applications of the Hybrid Reactors (ADS - Accelerator Driven System) is the incineration of transuranics (TRU) by fast neutrons that emerge from a spallation source in a sub critical reactor waste burner [1, 2]. For this application, an accurate description and prediction of spallation reaction is necessary, including all the characteristics
Brazilian Journal of Physics. Publicado em: 2005-09
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11. The study of the charged particle angular distribution as a nuclear spectroscopy tool / Estudo da distribuição angular na emissão de partículas carregadas como ferramenta em espectroscopia nuclear
Técnicas de espectroscopia gama associadas ao estudo de mecanismos de reação têm sido alvo de estudos desenvolvidos em física nuclear. O sistema Saci-Perere (Sistema Ancilar de Cintiladores e Pequeno Espectrômetro de Radiação Eletromagnética com Rejeição de Espalhamento) foi utilizado para esse tipo de estudo a partir de três experiências de fus
Publicado em: 2005
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12. The Intranuclear Cascade Model MCMC and its Applications for the Quasi-Deuteron Mechanism and Pion Photoproduction at Intermediate and High Energies / O modelo de cascata intranuclear MCMC e aplicações para o mecanismo do quase-dêuteron e a fotoprodução de pions em energias intermediárias e altas
O Presente trabalho propôs o estudo de reações fotonucleares e fotoprodução de pions em energias intermediárias e altas usando o modelo de cascata intranuclear MCMC para a fase rápida de reação e outro algoritmo de Monte Carlo para descrever o processo de decaimento do núcleo composto via evaporação de partículas e fissão nuclear. Dentre as pri
Publicado em: 2005