Measurement of ion beam angular distribution at different helium gas pressures in a plasma focus device by large-area polycarbonate detectors
- Authors: Sohrabi M.1, Habibi M.1, Ramezani V.1
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Affiliations:
- Energy Engineering and Physics Department
- Issue: Vol 43, No 2 (2017)
- Pages: 196-201
- Section: Plasma Diagnostics
- URL: https://journals.rcsi.science/1063-780X/article/view/186456
- DOI: https://doi.org/10.1134/S1063780X17020143
- ID: 186456
Cite item
Abstract
The paper presents an experimental study and analysis of full helium ion density angular distributions in a 4-kJ plasma focus device (PFD) at pressures of 10, 15, 25, and 30 mbar using large-area polycarbonate track detectors (PCTDs) (15-cm etchable diameter) processed by 50-Hz-HV electrochemical etching (ECE). Helium ion track distributions at different pressures, in particular, at the main axis of the PFD are presented. Maximum ion track density of ~4.4 × 104 tracks/cm2 was obtained in the PCTD placed 6 cm from the anode. The ion distributions for all pressures applied are ring-shaped, which is possibly due to the hollow cylindrical copper anode used. The large-area PCTD processed by ECE proves, at the present state-of-theart, a superior method for direct observation and analysis of ion distributions at a glance with minimum efforts and time. Some observations of the ion density distributions at different pressures are reported and discussed.
About the authors
M. Sohrabi
Energy Engineering and Physics Department
Email: mortezahabibi@gmail.com
Iran, Islamic Republic of, Tehran
M. Habibi
Energy Engineering and Physics Department
Author for correspondence.
Email: mortezahabibi@gmail.com
Iran, Islamic Republic of, Tehran
V. Ramezani
Energy Engineering and Physics Department
Email: mortezahabibi@gmail.com
Iran, Islamic Republic of, Tehran