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Radiation Protection Dosimetry 2004 110(1-4):195-200; doi:10.1093/rpd/nch129
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Radiation Protection Dosimetry Vol. 110 Nos. 1-4 © Oxford University Press 2004; all rights reserved

Invited Paper

Passive detectors for neutron personal dosimetry: state of the art

Francesco d'Errico1,2,* and Adrie J. J. Bos3

1 Departments of Therapeutic Radiology and Biomedical Engineering, Yale University, P.O. Box 208040, New Haven, CT 06520, USA
2 Dipartimento di Ingegneria Meccanica, Nucleare e della Produzione, Università degli Studi di Pisa, 2 via Diotisalvi, I-56126 Pisa, Italy
3 Delft University of Technology, IRI, 2629 JB Delft, The Netherlands

* Corresponding author: francesco.derrico{at}yale.edu

Passive, solid-state detectors still dominate the field of neutron personal dosimetry, mainly thanks to their low cost, high reliability and elevated throughput. However, the recent appearance in the market of several electronic personal dosemeters for neutrons presents a challenge to the exclusive use of passive systems for primary or official dosimetry. This scenario drives research and development activities on passive dosemeters towards systems offering greater accuracy of response and lower detection limits. In addition, further applications and properties of the passive detectors, which are not met by the electronic devices, are also being explored. In particular, extensive investigations are in progress on the use of solid-state detectors for aviation and space dosimetry, where high-energy neutron fields are encountered. The present situation is also stimulating an acceleration in the development of international standards on performance and test requirements for passive dosimetry systems, which can expedite significantly the implementation of techniques in commercial personal dosimetry services. Upcoming standards will cover thermoluminescence albedo dosemeters, etched-track detectors, superheated emulsions and direct ion storage chambers, attesting to the level of maturity reached by these techniques. This work reviews the developments in the field of passive neutron dosimetry emerged since the previous Neutron Dosimetry Symposium, reporting on the current status of the subject and indicating the direction of ongoing research.


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