مجله علوم و فنون هستهای (Feb 2014)
An Investigation on the Energy and the Angular Distribution of Nitrogen Ions in SBUMTPF1 Plasma Focus Device, Using Polycarbonate Nuclear Track Detector and Different Thicknesses of Aluminum Filters
Abstract
The purpose of this research is to investigate the energy and the angular distribution of nitrogen ions in SBUMTPF1 plasma focus device (3.2 kJ, 25 kV, 10.4 µF), using a polycarbonate solid state nuclear track detector. In this experiment, the operational voltage of the device is 23kV and nitrogen gas, under 0.5 mbar pressure, is used as a functional gas. In order to detect the ions more clearly, a 200 and 500 micron pinhole is utilized. Various thicknesses of aluminum filter were coated on the films. Detectors were set at 21.5cm away from the top of the anode and the angle toward the anode’s top was set at zero degree in order to determine the energy distribution of nitrogen ions. Also, a polycarbonate film with 1200 nanometer aluminum filter was used for determining the angular distribution, where it was set 10 cm away from the anode’s top, positioned at 0, 15, 30, 45 and 60 degrees in angle toward the anode’s top. Detector films were irradiated by nitrogen ions. The range of nitrogen ions in aluminum was calculated by the use of SRIM code. In addition, the appropriate thickness of aluminum filters in a range between 1200 and 2630 nanometer were obtained by this inwestigate to collect data by means of polycarbonate detectors.
