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HgI2 Two-Dimensional Arrays Based on Resistive Charge Division Readout

  • S. Alfieri (a1), N. De Cesare (a1), D. Grassi (a1), E. Perillo (a1), G; Spadaccini (a1), M. Vigilante (a1), W. Dusi (a2), M. Amann (a3), J. M. Koebel (a3) and P. Siffert (a3)...

Abstract

Newly designed HgI2 two-dimensional arrays based on resistive charge division, obtained by depositing a Ge surface resistive layer between the readout Pd strips, have been fabricated. These detectors, coupled with very low noise preamplifiers, have shown a high detection efficiency over a large active area and an energy resolution of 15% for X-ray energy Ex =60 keV (241Am), becoming ≈ 9% at Ex = 122 keV (57Co). Further, a spatial sensitivity of ≈ 5 μm and a spatial resolution of ≈ 40 μim in both the directions parallel to the anode and to the cathode strips have been obtained at an energy equivalent to ≈ 40 keV, by making use, for a fine spatial characterization of the devices, of a laser beam spot with wavelength tuned to match the crystal bandgap (582 nm). These devices, with optimized cathode layer resistances, could be successfully employed in basic research (for example Bragg X-ray spectrometry) and for imaging in radiological and space applications, at least in the important energy range 40 <Ex <120 keV.

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[1] Ortale, C., Padgett, L. and Schnepple, W.F., Nucl. Instr. and Meth. 213, 95 (1983)
[2] Iwanczyk, J.S., Warburton, W.K., Hedman, B., Hodgson, K.O. and Beyerle, A., Nucl. Instr. and Meth. A 266, 619 (1988)
[3] Iwanczyk, J.S., Nucl. Instr. and Meth. A 283, 208 (1989)
[4] Patt, B.E., Beyerle, A.G., Dolin, R.C. and Ortale, C., Nucl. Instr. and Meth. A 283, 215 (1989)
[5] Grassi, D., Hu, Z., Murolo, F., Perillo, E., Rosato, E., Spadaccini, G. and Vigilante, M., Nucl. Instr. and Meth. A 322, 449 (1992)
[6] Grassi, D., Murolo, F., Perillo, E., Spadaccini, G., Vigilante, M., Amann, M., Koebel, J.M., Siffert, P. and Dusi, W., Proc. of MRS Symp. 302, 97 (1993)
[7] Grassi, D., Murolo, F., Perillo, E., Spadaccini, G., Vigilante, M., Amann, M., Koebel, J.M., Siffert, P. and Dusi, W., Nucl. Instr. and Meth. A 348, 522 (1994)
[8] Amendolia, A., Bedeschi, F., Bertolucci, E., Bettoni, D., Bosisio, L., Bottigli, U., Bradaschia, C., Dell'Orso, M., Fidecaro, F., Foà, L., Focardi, E., Giannetti, P., Giorgi, M. A., Marrocchesi, P. S., Menzione, A., Raso, G., Ristori, L., Scribano, A., Stefanini, A., Tenchini, R., Tonelli, G. and Triggiani, G., Nucl. Instr. and Meth. 226, 82 (1984)
[9] Barabash, L. S., Belcarz, E., Gurov, Yu. B., Maltsev, E. I., Meszaros, L. P., Pethukov, Yu. P., Pimenov, A. G. and Sandukovsky, V. G., Nucl. Instr. and Meth. A 288, 375 (1990)
[10] Grassi, D., Perillo, E., Gigante, G., De Cesare, N., Spadaccini, G., Vigilante, M., Dusi, W., Amann, M., Koebel, J.M. and Siffert, P., Nucl. Instr. and Meth. A 390, 175 (1997)
[11] Scholz, H., Acta Electron. 17, 69 (1974)
[12] TAKES, via Faustina 70, 24010 Ponteranica -BG- Italy
[13] Spadaccini, G. and Ciobbo, G., Report in preparation
[14] Radeka, V. and Boie, R.A., Nucl. Instr. and Meth. 178, 543 (1980)

HgI2 Two-Dimensional Arrays Based on Resistive Charge Division Readout

  • S. Alfieri (a1), N. De Cesare (a1), D. Grassi (a1), E. Perillo (a1), G; Spadaccini (a1), M. Vigilante (a1), W. Dusi (a2), M. Amann (a3), J. M. Koebel (a3) and P. Siffert (a3)...

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