| Autor: |
Farahmand M; Delft University of Technology, IRI, 2629 JB Delft, The Netherlands. M.Farahmand@IRI.TUDELFT.NL, Bos AJ, De Nardo L, van Eijk CW |
| Jazyk: |
angličtina |
| Zdroj: |
Radiation protection dosimetry [Radiat Prot Dosimetry] 2004; Vol. 110 (1-4), pp. 839-43. |
| DOI: |
10.1093/rpd/nch144 |
| Abstrakt: |
A new type of mini multi-element tissue-equivalent proportional counter (TEPC) based on a gas electron multiplier (GEM) has been designed and constructed. This counter is in particular suitable to be constructed with a small sensitive volume so that it can be used for microdosimetry in intense pulsed radiation fields to measure the microdosimetric spectrum in the beam of, for instance, a clinical linear accelerator. The concept lends itself also for a mini multi-element version of the counter to be used for applications in which a high sensitivity is required. In this paper, we present the first microdosimetric measurements of this novel counter exposed to a 14 MeV monoenergetic neutron beam and a californium (252Cf) source for a counter cavity diameter of 1.8 mm simulating 1.0 microm tissue site size. The measured spectra showed an excellent agreement with spectra from the literature. The specific advantages of the TEPC-GEM are discussed. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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