摘要:

Passage of heavy ions produces radiation damage trails known as latent tracks in a variety of solid state nuclear track detectors (SSNTDs). The empirical formulation of the Single Activation Energy Model is based on track annealing data collected in our laboratory from both isothermal and isochronal experiments performed on different types of SSNTDs, viz. glasses, plastics and minerals. Some equivalent versions of our model have been proposed but the concept of single activation energy is vindicated in all empirical formulations. It is interesting to remark that this model always yields a unique value of activation energy independent of the nature of ion beam used and its degree of annealing. The anisotropy of mineral SSNTDs is revealed by variation of activation energy along different crystal planes and even at different orientations of ion beam. Some recent experiments are a pointer to the successful exploitation of this model for future cosmic ray studies using SSNTDs.

ISSN:1042-0150    

DOI:10.1080/10420159508225760

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Defect evolution in Neutron Transmutation Doped Czochralski-grown Si has been studied by positron annihilation and electrical measurements with respect to the annealing temperature up to 1100°C. Three annealing stages have been revealed depending on the annealing behaviour of vacancy and vacancy-impurity complexes.

ISSN:1042-0150    

DOI:10.1080/10420159508225761

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

This paper is concerned with the conduction electron concentration in an insulator exposed to high energy radiation. We find that the steady state conductivity [sgrave] (∞) of insulators is proportional to the dose rate of irraliation if the radiation source is weak and the temperature is low; the [sgrave] (∞) could be proportional to square root of the dose rate if temperature is very high. Before the steady state is reached, The approximate solution of electron concentration in conduction band of an insulator is calculated to change exponentially with time.

ISSN:1042-0150    

DOI:10.1080/10420159508225762

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor