Fission Tracks Analysis
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Caracterização por microssonda eletrônica dos teores de cloro de apatitas e sua importância nos estudos de traços de fissão
Apatite Fission Track Analysis (AFTA) provides important information for geochronology and is used in different tectonic settings. For example, in the study of sedimentary basins it helps estimate subsidence rates and dates periods of uplift of source areas and tectonic pulses. In geomorphology AFTA also helps to quantify rates of erosion and long-term conti
Publicado em: 2010
-
2. 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
-
3. Estudo de traços de fissão em vidro utilizando-se microscopias de força atomica e eletronica de varredura : inferencia da estrutura de traços latentes a partir de traços atacados / Glass fission track analysis by AFM and SEM : inferring latent track structure trough etched tracks
A study on the geometric evolution of 235U induced fission tracks in a soda-lime glass was made. It was necessary to know about the geometric model for structure evolution of fission tracks in isotropic materials. This model is based on the competition of two chemical etching rates: one in the bulk material (VB) and another in each fragment trajectory (VT).
Publicado em: 2008
-
4. Analise de traços de fissão em epidoto : obtenção de idades e estudo de annealing / Epidote fission-track analysis : age obtention and annealing experiments
Epidote fission-track ages for samples from the Serra da Mantiqueira were obtaine via both Population an External Detector Methods (EDM) an the mean value was (201 ± 15) Ma. The ages showe internal consistency an are place between those obtained through apatite, (127 ± 10) Ma, and the zircon fission-track dating, (369 ± 15) Ma. Studies concerning the epid
Publicado em: 2005
-
5. Evolução estrutural e termocronológica meso-cenozóica da Zona de Cisalhamento Portalegre, Nordeste do Brasil
A Zona de Cisalhamento Portalegre (ZCPa) representa um importante lineamento de direção NNE, transcorrente dextral instalado durante o Ciclo Brasiliano, foi submetida a uma importante história tectônica rúptil durante o Mesozóico e o Cenozóico, propiciando a formação das bacias sedimentares interiores de Gangorra, Pau dos Ferros, Coronel João Pesso
Publicado em: 2004