The performance of a novel ion-counting nanodosimeter
- 作者：Garty ; G. ; Shchemelinin ; S. ; Breskin ; A. ; Chechik ; R. ; Assaf ; G. ; Orion ; I. ; Bashkirov ; V. ; Schulte ; R. ; et. al.
- 关键词：87.53.Rd ; 29.40.Cs ; 61.80.&minus ; x ; Ion counting ; Nanodosimetry ; Radiation effects
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2002
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：October 11, 2002
- 卷：492
- 期：1-2
- 页码：212-235
- 文件大小：760 K
摘要
We present the performance of a novel device conceived for measuring minute energy deposits in a low-density gas, capable of operating in various radiation fields, including in an accelerator environment. The ion-counting nanodosimeter provides a precise measurement of the ionization distribution deposited within a small wall-less gas volume, modeling nanometer-scales of condensed matter, e.g. the DNA molecule. We describe the instrument and its data acquisition system. The results of systematic studies with low-energy alpha particles, protons and carbon ions are compared to model simulations; they demonstrate the capabilities and indicate the limitations of this novel technique.