Scope of plasma focus with argon as a soft X-ray source

Author

Zakaullah, M. ; Alamgir, K. ; Shafiq, M. ; Sharif, M. ; Waheed, A.

Author_Institution

Dept. of Phys., Quaid-i-Azam Univ., Islamabad, Pakistan

Volume

30

Issue

6

fYear

2002

fDate

12/1/2002 12:00:00 AM

Firstpage

2089

Lastpage

2094

Abstract

The X-radiation emission from a low energy plasma focus with argon as a filling gas is investigated. Specifically, the attention is paid to determine the system efficiency for argon K-lines and Cu-K_α line emission at different filling pressures, and identify the radiation emission region. The highest argon line emission found at 1.5 mbar is about 30 mJ and the corresponding efficiency is 0.0015%. The same pressure is suitable for high Cu-K_α emission, which is about 70 mJ in 4π geometry and the system efficiency is 0.003%. The bulk of X-radiation is emitted from the region close to the anode tip, whereas some radiation emission takes place from the formed hot spots along the focus axis. These radiations are found suitable for backlighting in Al (1-1.56 keV) and Ti (2.9-4.96 keV) energy transmission bands.

Keywords

argon; plasma X-ray sources; plasma focus; 0.0015 percent; 0.003 percent; 1 to 1.56 keV; 1.5 mbar; 2.9 to 4.96 keV; 30 mJ; 70 mJ; Al; Al energy transmission bands; Ar; Ar filling gas; Cu; Cu-K_α line emission; K-lines; Ti; Ti energy transmission bands; X-radiation emission; X-ray backlighting; X-ray emission; anode tip; argon; argon line emission; filling pressures; focus axis; hot spots; low energy plasma focus; soft X-ray source; Argon; Copper; Filling; Laser theory; Physics; Plasma density; Plasma devices; Plasma sources; Plasma x-ray sources; X-ray lasers;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2002.807629

Filename

1178817