Wall-less ion-counting nanodosimetry applied to protons

G. Garty, S. Shchemelinin, A. Breskin, R. Chechik, I. Orion, G. P. Guedes, R. Schulte, V. Bashkirov, B. Grosswendt

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


A wall-less ion-counting nanodosemeter, conceived for precise ionisation-cluster measurements in an accelerator environment, is described. The technique provides an accurate means for counting single radiation-induced ions, in dilute gas models of condensed matter. The sensitive volume dimensions, a few tissue-equivalent nm in diameter by a few tens of nm, are tunable by a proper choice of the gas pressure and electric fields; nanometric sub-sections can be electronically selected. Detailed ion-cluster distributions are presented for protons of 7.15, 13.6 and 19.3 MeV, in biologically relevant DNA-like sensitive volumes of low-pressure propane. Experimental results are compared to model simulations.

Original languageEnglish
Pages (from-to)325-330
Number of pages6
JournalRadiation Protection Dosimetry
Issue number1-4
StatePublished - 1 Jan 2002
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health


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