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A New Numerical Approach to Evaluate Variation of Electric Field Strength at the End of Particle Trajectory in Nuclear Track Detectors |
| SUN Xiu-Dong1; Ali Mostofizadeh1;HOU Chun-Feng1;M. Reza Kardan2 |
| 1Department of Physics, Harbin Institute of Technology, Harbin 1500012Nuclear Science and Technology Research Institute, Radiation ApplicationResearch School, Tehran, Iran |
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| Cite this article: |
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SUN Xiu-Dong, Ali Mostofizadeh, HOU Chun-Feng et al 2008 Chin. Phys. Lett. 25 81-84 |
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Abstract A geometrical model for an electrochemical etching (ECE) track in a dielectric detector is defined and a primary programme is written to generate the track. The generated track is transformed to an M × N matrix of primary voltages. Using a numerical method, the matrix of final voltages is computed, and using another numerical approach, the electric field strengths in the elements of detector volume are computed. The final field strength at the end of particle trajectory is obtained. The results of our numerical computation show that there are exact correlations between the field strength at the end of particle
trajectory and the parameters of track under ECE. It is found that although two traditional models of Mason and Smythe in dielectrics can be partly applied for short and long tracks, none of them areable to explain the behaviour of field strength in a `general case'.
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| Keywords:
29.40.Wk
29.40.-n
02.60.Cb
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Received: 10 October 2007
Published: 27 December 2007
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| PACS: |
29.40.Wk
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(Solid-state detectors)
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29.40.-n
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(Radiation detectors)
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02.60.Cb
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(Numerical simulation; solution of equations)
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[1] Somogyi G 1977 Nucl. Track Detection 1 3
[2] Durrani S A 2001 Radiat. Meas. 34 5
[3] Khan H A and Gureshi I E 1999 Radiat. Meas. 31 25
[4] Nikezic D, Yu K N 2004 Mater. Sci. Engin. R 46 51
[5] Nikezic D, Yu K N 2006 Comp. Phys. Commun. 174 160
[6] Durrani, S A, Bull, R K 1987 Solid State Nuclear TrackDetection, Principles, Methods and Applications (Oxford: Pergamon) p179
[7] Karamdoust N A and Durrani S A 1988 Nucl. TracksRadiat. Meas. 15 295
[8] Tommasino L 1970 Electrochemical Etching of Damage TrackDetectors by H.V. Pulse and Sinusoidal Wave Forms CNEN ReportRT/PROT 1
[9] Mason J H 1951 Proc. IEEE ( The Deterioration andBreakdown of Dielectrics Resulting from Internal Discharges) 98 44
[10] Pitt E, Scharmann A and Werner B 1988 Rad. Prot.Dosimetry 23 179
[11] Smythe W R 1939 Static and dynamic electricity (New York:McGraw Hill) p 167
[12] Banoushi A, Kardan M R, Sohrabi M, Mostofizadeh A 2007 Radiat. Meas. (in press) doi:10.1016/j.radmeas.2007.11.007
[13] Gonzalez R and Wintz P 1987 Digital Image Processing 2nd edn(New York: Addison-Wesley) chap 4
[14] Taheri M and Toudeshki H S 2005 Rad. Meas. 40 307 |
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