A solid state microdosimeter based on a monolithic silicon telescope.
Radiat Prot Dosimetry
; 122(1-4): 382-6, 2006.
Article
em En
| MEDLINE
| ID: mdl-17151010
ABSTRACT
A monolithic silicon telescope, consisting of a DeltaE and an E stage-detector ( approximately 1.9 microm and 500 microm thick, respectively), was coupled to a polyethylene converter in order to investigate the feasibility of a solid state microdosimeter with respect to the field-funnelling effect. This work discusses the preliminary results of an analytical approach for the correction of a spectrum measured with this silicon-based microdosimeter for tissue-equivalence and geometrical effects. The device was irradiated with 2.7 MeV monoenergetic neutrons at the INFN-Laboratori Nazionali di Legnaro (Legnaro, Italy). The non tissue-equivalence of silicon was corrected by exploiting the signals generated in the E-stage. The correction for the sensitive volume geometry was optimised by taking into account the track length distribution of the recoil-protons generated in the converter. The derived dose distribution of the energy imparted per event was compared to the one measured with a cylindrical tissue-equivalent proportional counter (TEPC). The agreement is satisfactory.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radiometria
/
Silício
/
Óptica e Fotônica
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Radiat Prot Dosimetry
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Itália