Experimental determination of radiation dose distribution in an heterogeneous medium, irradiated with clinical beams of x and gamma rays. / Estados de impureza em poços quânticos de GaAs-Ga1-xAlxAs

AUTOR(ES)
DATA DE PUBLICAÇÃO

1989

RESUMO

The mass-effective equation is used in order to calculate the intra and inter-subband transition energies in the Quantum Wett structures. The electronic screening of the shallow donor impurity is inclued in the RPR method and the energies are found through variational formalism. The binding energies are calcutated as function of the electronic density and impurity position inside the welt. We have calculated the density of states due to impurity position and also the non-parabolicity effect of the GaAs conduction band is analised. For better fitting between our results and the experimental data, we have inclued the magnetic field in the system. Our results seem in a good agreement to those experimentally obtained.

ASSUNTO(S)

dosimetria dosimetria com filme heterogeneidade interface dosimetry film dosimetry heterogeneity dosimetry dosimetria de interface

ACESSO AO ARTIGO

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