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A New Type of Cylindrical a-Si:H X-Ray Detector

Published online by Cambridge University Press:  10 February 2011

D. Link ,
H. Keppner ,
P. Chabloz ,
A. Shah ,
J.-F. Germond ,
J.- M. Haefliger ,
Y. Pochon  and
G. Frosio
D. Link
Affiliation:
Laboratoire de Microtechnique, Université de Neuchâtel et EPFL, Breguet 2, 2000 Neuchâtel, Switzerland
H. Keppner
Affiliation:
Laboratoire de Microtechnique, Université de Neuchâtel et EPFL, Breguet 2, 2000 Neuchâtel, Switzerland
P. Chabloz
Affiliation:
Laboratoire de Microtechnique, Université de Neuchâtel et EPFL, Breguet 2, 2000 Neuchâtel, Switzerland
A. Shah
Affiliation:
Laboratoire de Microtechnique, Université de Neuchâtel et EPFL, Breguet 2, 2000 Neuchâtel, Switzerland
J.-F. Germond
Affiliation:
Service de radio-oncologie, Hôpital communal, rue de Chasseral 20, 2300 La Chaux-de-Fonds, Switzerland
J.- M. Haefliger
Affiliation:
Service de radio-oncologie, Hôpital communal, rue de Chasseral 20, 2300 La Chaux-de-Fonds, Switzerland
Y. Pochon
Affiliation:
Ecole d'Ingénieurs du Canton de Neuchâtel, 7 av. de l'Hôtel-de-Ville, 2400 Le Locle, Switzerland
G. Frosio
Affiliation:
Ecole d'Ingénieurs du Canton de Neuchâtel, 7 av. de l'Hôtel-de-Ville, 2400 Le Locle, Switzerland
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Abstract

The present paper describes a new type of cylindrical X-ray detector based on thick amorphous silicon diodes. The authors report on the successful development of these detectors that have diameters as small as 3mm. The effect of silane dilution in hydrogen on deposition rate, powder formation, layer adhesion and detector performance is discussed. A set of deposition parameters is presented, that allows a reasonable compromise between the mentioned effects. First prototypes of this type of dosimeter have been characterised with the radiation from a 60Co source in a hospital. The corresponding results and interpretation are given in this paper.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 420: Symposium A – Amorphous Silicon Technology-1996 , 1996 , 141
Copyright
Copyright © Materials Research Society 1996

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References

1. European Organisation for Research and Treatment of Cancer (EORTC), Report of the consensus meeting held in Geneva, January 1990 Google Scholar
2. Curtins, H., Wyrsch, N., Shah, A. V., Electronics Letters 23 (5), 228 (1987)Google Scholar
3. Tscharner, R., Fischer, D., Keppner, H., Shah, A. V., Howling, A. A., Dorier, J. L. and Hollenstein, Ch., Proc. PVSCE–6, 311 (1992)Google Scholar
4. Chabloz, P., Keppner, H., Fischer, D., Link, D., Shah, A., ICAS 16 Proc., Kobe (1995), in pressGoogle Scholar
5. Chabloz, P., Keppner, H., Baertschi, V. and Shah, A., MRS Symp. Proc. Vol.258, 1057 (1992)Google Scholar
6. Kroll, U., private communicationGoogle Scholar
7. Kroll, U., Meier, J., Goetz, M., Howling, A., Dorier, J. L., Dutta, J., Shah, A. and Hollenstein, Ch., J. Non-Cryst. Solids 164–166, 59 (1993)Google Scholar
8. Schiff, E. A., Street, R. A., Weisfield, R. L., ICAS 16 Proc. Kobe (1995), in pressGoogle Scholar
9. Pochet, T., Dubeau, J., Equer, B., Karar, A. and Hamel, L.A., J. Appl. Phys. 68 (1) 1340 (1990)Google Scholar