Radiation damage study in CZT matrix detectors exposed to gamma rays

Main Article Content

Antonio Leyva Fabelo
Olga Dona Lemus
Angelina Díaz García
Luis Manuel Montaño Zétina

Abstract

Radiation damage in terms of atomic displacements in a typical CZT detector used in medical imaging applications was studied using the Monte Carlo statistical method. All detector structural and geometric features as well as different energies of the photons usually used in the application were taken into account. Considering the Mott-McKinley-Feshbach classical approach, effective cross sections of the displacements were calculated, including the number of displacements per atom for each atomic species present in the material and each photon energy considered. These results are analyzed and compared. Finally, the radiation damage on CZT detector is compared
to that calculated in a similar detector manufactured with other semiconducting materials.

Article Details

How to Cite
Leyva Fabelo, A., Dona Lemus, O., Díaz García, A., & Montaño Zétina, L. M. (1). Radiation damage study in CZT matrix detectors exposed to gamma rays. Nucleus, (45). Retrieved from http://nucleus.cubaenergia.cu/index.php/nucleus/article/view/521
Section
Ciencias Nucleares

References

1] WAGENAAR DJ, PARNHAM K, SUNDAL B, et. al. Advantages of semiconductor CZT for medical imaging. Penetrating Radiation Systems and Applications VIII. Edited by Doty F. P., Barber HBr. and Roehrig H. Proceedings of the SPIE. vol. 6707. 2007. p.67070I.
[2] PISANO ED, YAFFE MJ, KUZMIAK CM. Digital Mammography, Lippincott Williams & Wilkins (LWW). 1st Edition. 2003.
[3] BAILEY DL, TOWNSEND DW, VALK PE, et. al. Positron Emission Tomography: Basic Sciences. First edition. London: Springer-Verlag, 2005.
[4] HENDRICKS JS, MCKINNEY GW, TRELLUE HR, et. al. MCNPX TM Version 2.6.B. Report. LA-UR-06-3248. Los Alamos National Laboratory, June 2006.
[5] MCKINLEY WA, FESHBACH H. The Coulomb Scattering of Relativistic Electrons by Nuclei. Phys Rev. 1948; 74(12): 1759-1763.
[6] BRYANT FJ, WEBSTER E. Threshold Energy for Atomic Displacement in Cadmium Telluride. Physica Status Solidi (b). 1967; 21(1): 315-321.
[7] BRYANT FJ, BAKER ATJ. Threshold energy for tellurium displacement in zinc telluride. J. Phys. C: Solid State Phys. 1972; 5(16): 2283-2288.
[8] MEESE JM. Zn displacement threshold in ZnTe. Appl. Phys. Lett. 1971; 19: 86-87.
[9] KINCHIN GH, PEASE RS. The displacement of atoms in solids by radiation. Rep. Prog. Phys. 1955; 18: 1-51.

Most read articles by the same author(s)