Intercomparison exercise with MeV neutrons using various electronic personal dosimeters

Wieluński, M.; Wahl, W.; El-Faramawy, Nabil; Rühm, W.; Luszik-Bhadra, M.; Roos, H.

doi:10.1016/j.radmeas.2007.10.017

Cited by 20 publications

(8 citation statements)

References 11 publications

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“…To ensure the selective detection, in the sensors of thermal neutrons and epithermal used the cover of cadmium from the orifice, in the fast neutron sensors -lead casing. [2,3,4,5,6] Figure 2 shows a schematic diagram of the sensors HZ1/50. …”

Section: Neutron Sensor Operationmentioning

confidence: 99%

Influence of construction and technology on the time stability of the neutron sensors

et al. 2013

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This article describes a study on the influence construction and technology on the time stability of neutron sensors developed at the Institute of Electron Technology, and was prepared the need to eliminate the dark current growth in longterm use, not associated with radiative exposures.After analyzing the construction of detectors makes some changes to technological processes. To improve the assembly technology changed the type of converter (hard wax is replaced with a soft petroleum jelly) and introduced the foam insert to the casing of the sensor in order to avoid mechanical stresses in the structure. These stresses occur as a result of thermal shrinkage of wax (almost abrupt change of state from liquid to crystalline phase), which caused the piezoelectric effect. After conducting structural and technological changes detectors were long-term electric load.

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Section: Neutron Sensor Operationmentioning

confidence: 99%

Influence of construction and technology on the time stability of the neutron sensors

et al. 2013

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“…The detector-converter design and calculations were performed in order to get optimized response functions from thermal up to 20 MeV. A dosemeter with low power electronics has been implemented; its response has been recently measured in the neutron energy range from 1.5 MeV to 4.5 MeV [21], but it still needs to be verified in a broader energy region.…”

Section: Prototype Dosemetersmentioning

confidence: 99%

State of the Art in Electronic Dosemeters for Neutrons

Luszik-Bhadra¹

2011

AIP Conference Proceedings

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Articles you may be interested in 3D printer generated thorax phantom with mobile tumor for radiation dosimetry Rev. Sci. Instrum. 86, 074301 (2015); Abstract. The paper presents an overview of electronic personal dosemeters for neutrons in mixed neutron/photon fields. The energy response of commercially available electronic dosemeters in quasi-monoenergetic neutron fields and their performance in working places is discussed. The response curves are extended to high-energy neutrons up to 100 MeV, new prototype dosemeters are described and discussed especially for use at high-energy accelerators and in space.Electronic personal dosemeters for neutrons are much less developed than those for photon and beta radiation fields. After an introduction on quantities measured in personal dosimetry, a short overview of the performance of electronic dosemeters for photons and electrons is given. This is followed by a description of the general problems for the development of neutron dosemeters, i.e. the huge range of neutron energies encountered in workplace fields, the limited number of nuclear reactions available for detecting these neutrons and the problems involved in the discrimination of photon-induced signals in mixed neutron-photon radiation fields.First, the performance of passive personal neutron dosemeters is described for the two main detection methods in routine use, i.e. that of TLD-Albedo dosemeters and nuclear track dosemeters. This is followed by the description of the performance of commercially available electronic neutron dosemeters, most of them based on silicon detectors, and some prototype dosemeters, based on special silicon detectors, bubble detectors, direct ion storage (DIS) detectors and tissue equivalent counters (TEPCs). The results of measurements in calibration fields and in workplace fields of the nuclear industry are presented. In addition, the existing neutron energy responses of dosemeters are updated to higher energies, up to about 100 MeV, in order to estimate the readings of these dosemeters behind the heavy shielding of high-energy accelerators, i.e. for use in ion therapy.At the end, a short outlook is given of the development of electronic personal dosemeters for astronauts. The radiation field in space is even much more complex since it includes not only neutrons and photons, but also ions and electrons and dose equivalent spectra extend to even higher energies.

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“…Nowadays, neutrons are widely used in many fields of both research and technology (Wielunski et al, 2008b). Reliable determination of neutron doses is still an issue in the field of radiation protection (Lacoste et al, 2007).…”

Section: Artificial Neural Network and Neutron Spectrometrymentioning

confidence: 99%