| Zugriffsnummer | 18481 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | Ion-counting nanodosemeter with particle tracking capabilities |
| Autor(in); Institution |
Bashkirov, V.; Loma Linda University Medical Center, Department of Radiation Medicine, Loma Linda, USA
Schulte, R.; Loma Linda University Medical Center, Department of Radiation Medicine, Loma Linda, USA
Breskin, A.; Weizmann Institute of Science, Rehovot, ISRAEL
Chechik, R.; Weizmann Institute of Science, Rehovot, ISRAEL
Shchemelinin, S.; Weizmann Institute of Science, Rehovot, ISRAEL
Garty, G.; RARAF, Columbia University, Irvington, New York, USA
Wroe, A.; University of Wollongong, Centre for Medical Radiation Physics, Wollongong, NSW, AUSTRALIA
Sadrozinski, H.; Santa Cruz Institute of Particle Physics, University of California, Santa Cruz, CA, USA
Großwendt, Bernd; 6.6, Grundlagen der Dosimetrie, PTB-Braunschweig
|
| Quelle/Jahr | Microdosimetry : proceedings of the 14th International Symposium on Microdosimetry. Radiation Protection Dosimetry: 122 (2006), 1/4, 415 - 419 |
| ISSN | 0144-8420 |
| ISBN | 978-0-19-923171-3 |
| DOI | |
| Verlag | Oxford: Oxford University Press |
| Konferenzangaben | 14th International Symposium on Microdosimetry, Venice, 13-18, November, 2005, Italy |
| Freie Schlagworte | Nanodosimetry ; Ion detection efficiencies ; Track structure studies ; Ionization pattern of 250 Me V protons |
| Zusammenfassung | In recent years, we have developed an ion counting nanodosimeter capable of measuring the distribution of radiation-induced ions in a millimetric, wall-less sensitive volume in a low-pressure gas. The sensitive volume models an equivalent nanometric volume of DNA. At Loma Linda University Medical Center (LLUMC), this device has been equipped with a silicon microstrip telescope that tracks the primary particles, allowing correlation of nanodosimetric data with particle position relative to the sensitive volume. Here we report on the design and performance of this tracking nanodosimeter, tested with a broad 250 MeV proton beam. We demonstrate that particle coordinate information in the silicon tracker combined with nanodosimetric data can map the ionization pattern of track segments in three dimensions within a few hundred nanometer-equivalent volume and with a resolution of about 5 tissue-equivalent nanometers. The precision tracking capability also enabled us to perform measurements aimed at verification of the wall-less sensitive volume dimensions, for which only simulated data were available. We have seen that the tracking nanodosimetry data and Monte Carlo simulation results agreed well, thus allowing application of this technique to experimental track-structure studies of charged particles. |
Zitierung
Bashkirov, V., Schulte, R., Breskin, A., Chechik, R., Shchemelinin, S., Garty, G., Wroe, A., Sadrozinski, H., & Großwendt, B. (2006). Ion-counting nanodosemeter with particle tracking capabilities. Radiation Protection Dosimetry, 122(1/4), 415–419. https://doi.org/10.1093/rpd/ncl470