Skip to main content Accessibility help
×
Home

Neutron Detectors Made From Chemically Vapour Deposited Semiconductors

  • F. Foulon (a1), P. Bergonzo (a1), A. Brambilla (a1), C. Jany (a1), B. Guizard (a1) and R. D Marshall (a1)...

Abstract

In this paper, we present the results of investigations on the use of semiconductors deposited by chemical vapour deposition (CVD) for the fabrication of neutron detectors. For this purpose, 20 μm thick hydrogenated amorphous silicon (a-Si:H) pin diodes and 100 μm thick polycrystalline diamond resistive detectors were fabricated. The detectors were coupled to a neutron-charged particle converter : a layer of either gadolinium or boron (isotope 10 enriched) deposited by evaporation. We have demonstrated the capability of such neutron detectors to operate at neutron fluxes ranging from 101 to 106 neutrons/cm2.s. The fabrication of large area detectors for neutron counting or cartography through the use of multichannel reading circuits is discussed. The advantages of these detectors include the ability to produce large area detectors at low cost, radiation hardness (∼ 4 Mrad for a-Si:H and ∼ 100 Mrad for diamond), and for diamond, operation at temperatures up to 500°C. These properties enable the use of these devices for neutron detection in harsh environments. Thermal neutron detection efficiency up to 22 % and 3 % are expected by coupling a-Si:H diodes and diamond detectors to 3 μm thick gadolinium (isotope 157) and 2 μm thick boron layers, respectively.

Copyright

References

Hide All
1. Perez-Mendez, V., Morel, J., Kaplan, S.N., Street, R.A., Nucl. Instr. Meth. A252, 478 (1987).
2. Hong, W.S. et al., IEEE Trans. Nucl. Sci. 42, 240 (1995).
3. Pochet, T., Ilie, A., Brambilla, A., Equer, B., IEEE Trans. Nucl. Sci. 43, 1452 (1996).
4. Mireshghi, A., Cho, G., Drewery, J., Jing, T., Kaplan, S.N., Perez-Mendez, V., Wildermuth, D., IEEE Trans. Nucl. Sci. 39, 635 (1992).
5. Mireshghi, A., Cho, G., Drewery, J., Jing, T., Lee, H., Kaplan, S.N., Perez-Mendez, V., IEEE Trans. Nucl. Sci. 41, 915 (1994).
6. Street, R., Wu, X.D., Weisfield, R., Ready, S., Apte, R., Nguyen, M., Nylen, P., Nucl. Instr. Meth. A380, 450 (1996).
7. Kania, D.R., Landstrass, M.I., Plano, M.A., Diamond. Relat. Mater. 2, 374 (1993).
8. Foulon, F., Pochet, T., Gheeraert, E., Deneuville, A., IEEE Trans. Nucl. Sci. 41, 927 (1994).
9. Meier, D. et al., submitted to J. Electrochem. Soc. and presented at the 5th International Symposium on Diamond Materials, Paris, September 1997.
10. MacKeag, R.D., Marshall, R.D., Bhaswar, B., Chan, S.S.M., Jackman, R.B., Diamond. Relat. Mater. 6, 374 (1996).
11. Brambilla, A., Bergonzo, P., Foulon, F., Jany, C., Pochet, T., Nucl. Instr. Meth. A380, 446 (1996).
12. Brambilla, A., Bergonzo, P., Foulon, F., Jany, C., Guizard, B., Pochet, T., presented at the International Conference on Radiation Dosimetry and Safety, Taipei, March 1997.
13. Rose, A., Nucl. Instr. Meth. 52, 166 (1967).
14. Feigl, B., Rauch, H., Nucl. Instr. Meth. 61, 349 (1968).
15. Jany, C., Bergonzo, P., Foulon, F., Tardieu, A., Gicquel, A., submitted to J. Electrochem. Soc. and presented at the 5th International Symposium on Diamond Materials, Paris, September 1997.
16. Jany, C., Foulon, F., Bergonzo, P., Marshall, R.D., submitted to Diamond. Relat. Mater. And presented at Diamond 97, Edinburgh, August 1997.
17. Colledani, C. et al., to be published in Nucl. Instr. Meth.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed