Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (en)

I. E. Anokhin, O. S. Zinets

Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

Abstract: The possibility of using the silicon strip-detector coated with a polyethylene film for the coordinate determination of fast neutrons has been discussed. The accuracy of the fast neutron coordinate determination is dependent on peculiarities of the interaction of neutrons with polyethylene and the accuracy of the registration of the recoil protons produced by fast neutrons in a polyethylene film, i.e. energies and angular distributions of the recoil protons and characteristics of tracks produced in the detector. The average charge collected on strips as a function of coordinates of incident neutrons has been calculated. It is shown that the most important for the best charge collection and accuracy of the coordinate determination is the choice of the interstrip distance. The other factors influencing on the coordinate determination (the distribution of the electrical field in the detector, the ratio of the track length to the interstrip distance) have been discussed.

Keywords: position sensitive particle detectors, neutron detectors.

1. Agosteo S., Birattari C., D'Angelo G. et al. Neutron spectrometry with a recoil radiator-silicon detector device. Nucl. Instr. and Meth. A 515 (2003) 589. https://doi.org/10.1016/j.nima.2003.06.006

2. Bruckner G., Czermak A., Rauch H. et al. Position sensitive detection of thermal neutrons with solid state detectors (Gd Si planar detectors). Nucl. Instr. and Meth. A 424 (1999) 183. https://doi.org/10.1016/S0168-9002(98)01283-2

3. McGregor D. S., Hammig M. D., Yang Y. -H. et al. Design considerations for thin film coated semiconductor thermal neutron detectors - I: basics regarding alpha particle emitting neutron reactive films. Nucl. Instr. and Meth. A 500 (2003) 272. https://doi.org/10.1016/S0168-9002(02)02078-8

4. Douglas S. McGregor, Kenneth Shultis J. Spectral identification of thin-film-coated and solid-form semiconductor neutron detectors. Nucl. Instr. and Meth. A 517 (2004) 180. https://doi.org/10.1016/j.nima.2003.09.037

5. Jakubek J., Holy T., Lehmann E. et al. Neutron imaging with Medipix-2 chip and a coated sensor. Nucl. Instr. and Meth. A 560 (2006) 143. https://doi.org/10.1016/j.nima.2005.11.243

6. Uher J., Jakubek J., Koster U. et al. Detection of fast neutrons with the Medipix-2 pixel detector. Nucl. Instr. and Meth. A 591 (2008) 71. https://doi.org/10.1016/j.nima.2008.03.027

7. Guo J., Bücherl T., Zou Y. et al. Comparison of the performance of different converters for neutron radiography and tomography using fission neutrons. Nucl. Instr. and Meth. A 605 (2009) 69. https://doi.org/10.1016/j.nima.2009.01.129

8. Belau E., Klanner R., Lutz G. et al. Charge collection in silicon strip detectors. Nucl. Instr. and Meth. 214 (1983) 253. https://doi.org/10.1016/0167-5087(83)90591-4

9. Kemmer J., Lutz G. New detector concepts. Nucl. Instr. and Meth. A 253 (1987) 365. https://doi.org/10.1016/0168-9002(87)90518-3

10. Rosenfeld A. B., Pugatch V. M., Zinets O. S. et al. Strip detector for short-range particles. Nucl. Instr. and Meth. A 326 (1993) 234. https://doi.org/10.1016/0168-9002(93)90357-N

11. Anokhin I. E., Zinets O. S. Distribution of electric field and charge collection in silicon strip detectors. Nucl. Instr. Meth. A 477 (2002) 110. https://doi.org/10.1016/S0168-9002(01)01892-7

12. Knoll Glenn F. Radiation Detection and Measurement. 2nd ed. (Singapore: John Wiley & Sons, 1989).

13. Sze S. M. Physics of Semiconductor Devices. 2nd ed. (New York: John Wiley & Sons, 1981).

14. The PSTAR program. http://physics.nist.gov/PhysRefData/Star/Text/PSTAR.html