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Annals of the Academy of Romanian Scientists

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Charge coupled devices, Theoretical physics


The evaluation of the uniqueness parameters of the temperature dependence in CCDs is difficult to the considerable number of input parameters and to the strongly nonlinear (exponential) theoretical relations. For this reason, the elaborated computer programs are very sensitive to the choice of the zero-order approximations of the effective (Si) energy gap, and of the weights associated to the experimentally determined dark current. The main goal of this work was to study the rather narrow stability domains of the zero-order approximations, which lead to attractors with physical meaning. It was found that the stability domains are surrounded by (usually in this order): other fields leading to oscillations, pseudo-convergence (false attractors, described by non-physical values of the studied parameters) or instability fields, which were studied also in detail.


This is the publisher's final PDF. Originally appeared in the Annals of the Academy of Romanian Scientists.

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