caa a22 4500 397503814 CHVBK 20180308164539.0 cr unu---uuuuu 161202e19950801xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082783 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082783 A Single-Electron Counter for Nanodosimetry [Elektronische Daten] [A. Breskin, R. Chechik, P. Colautti, V. Conte, L. De Nardo, A. Pansky, S. Shchemelinin, G. Talpo, G. Tornielli] A detector has been devised able to measure with high resolution the primary ionisation yield in tissue-equivalent gas volumes of a few nanometres equivalent length. The sensitive ionisation volume is a wall-less millimetric region defined by a properly shaped electric field. Free electrons creased by the radiation inside the sensitive volume are collected into an electron multiplier, capable of efficiently counting single electrons at low gas pressure. The single-electron detection system consists of a long drift column attached to a multistep proportional counter. The electron cloud created by the radiation inside the sensitive volume, diffuses along the drift column. Single electrons, successively arriving at the multiplier are amplified, giving rise to a pulse trail from which the original number of ionisation electrons is counted. The experimental set-up, the electron counting principle, and first data are presented and discussed. Radiation Protection Dosimetry Breskin A. aut Chechik R. aut Colautti P. aut Conte V. aut De Nardo L. aut Pansky A. aut Shchemelinin S. aut Talpo G. aut Tornielli G. aut Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 199-204 0144-8420 61:1-3<199 1995 61 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082783 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082783 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Breskin A. aut NATIONALLICENCE 700 1- Chechik R. aut NATIONALLICENCE 700 1- Colautti P. aut NATIONALLICENCE 700 1- Conte V. aut NATIONALLICENCE 700 1- De Nardo L. aut NATIONALLICENCE 700 1- Pansky A. aut NATIONALLICENCE 700 1- Shchemelinin S. aut NATIONALLICENCE 700 1- Talpo G. aut NATIONALLICENCE 700 1- Tornielli G. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 199-204 0144-8420 61:1-3<199 1995 61 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford