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Type: Artigo de periódico
Title: On the reproducibility of SSNTD track counting efficiency
Author: Guedes, S
Hadler, JC
Iunes, PJ
Paulo, SR
Tello, CA
Abstract: In this work, the influence of track density and chemical etching on the reproducibility of the track counting efficiency, epsilon(0), in solid state nuclear track detectors (SSNTDs) is studied. This was performed by means of the analysis of CR-39 sheets that were attached to a thin film of natural uranium. Maintaining the chemical etching parameters constant and varying the exposition time, epsilon(0) is observed to be constant for track densities varying between values approximately equal to the track background and those corresponding to the track: overlapping limit, where track counting becomes difficult (similar to 10(5) cm(-2) at our conditions). Otherwise, keeping constant the exposition time and varying the etching temperature, a variation in Eg is found if a usual track counting criterion is employed. However, such a variation vanishes statistically when a more rigorous criterion is adopted. (C) 1998 Elsevier Science B.V. All rights reserved.
Subject: solid-state nuclear track detectors
track counting efficiency
superficial track density and chemical etching
Country: Holanda
Editor: Elsevier Science Bv
Citation: Nuclear Instruments & Methods In Physics Research Section A-accelerators Spectrometers Detectors And Associated Equipment. Elsevier Science Bv, v. 418, n. 41700, n. 429, n. 433, 1998.
Rights: fechado
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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