A comparative study on the performance of radiation detectors from the HgI2 crystals grown by different techniques

• Autorzy: Martins J. F. T. , Costa F. E. , dos Santos R. A. , de Mesquita C. H. , Hamada M. M.
• Konferencja: Proceedings of the International Conference on Development and Applications of Nuclear Technologies NUTECH-2011, 11-14 September 2011, Kraków, Poland
• Języki publikacji: EN

Abstrakty

EN

In this work, the establishment of a technology for HgI2 purification and crystal growth is described, aiming at a future application of this crystal as a room temperature radiation semiconductor detector. Two methods of crystal growth were studied in the development of this work: (1) physical vapor transport (PVT) and (2) saturated solution from dimethylsulphoxide (DMSO) complexes. In order to evaluate the crystals obtained using each of these methods, systematic measurements were carried out for determining the stoichiometry, structure, orientation, surface morphology and impurity of the crystal. The influence of these physicochemical properties of the crystals developed was evaluated in terms of their performance as a radiation detector. The best response to radiation was found for the crystals grown by the PVT technique. Significant improvement in the performance of HgI2 radiation detector was found, purifying the crystal by means of two successive growths by the PVT technique.

Słowa kluczowe

EN

crystal growth; iodide mercury crystal; physical vapor transport (PVT); radiation detector; semiconductor crystal

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2012
• Tom: Vol. 57, No. 4
• Strony: 555--562
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Martins J. F. T.

autor

Costa F. E.

autor

dos Santos R. A.

autor

de Mesquita C. H.

autor

Hamada M. M.

• Institute for Nuclear and Energy Research (IPEN-CNEN/SP), 2242 Prof. Lineu Prestes Ave., Cidade Universitária, 05508-000, Săo Paulo – SP, Brazil, Tel.: [phone], Fax: [phone]

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