Spectrum diagnoses of laser ion source at IFP

Author

Pan Dong ; Huang Zhang ; Jie Li ; Jidong Long ; Kaizhi Zhang ; Jinshui Shi

Author_Institution

Inst. of Fluid Phys., China Acad. of Eng. Phys., Mianyang, China

fYear

2014

fDate

Sept. 28 2014-Oct. 3 2014

Firstpage

549

Lastpage

551

Abstract

Laser ion source is a key component of induction accelerators for heavy ion fusion, and such a source is under research at institute of fluid physics (IFP). In this paper, optical emission spectroscopy is used to diagnose the Cu plasma irradiated by a quadruplicated frequency Nd: YAG laser (266 nm). The spectra show that there are no highly charged ions. The results show that the electron temperature is about 1 eV and the electron density is 4.4×10¹⁶ cm^-3. And the temporal spectra are measured, which indicate that the lifetime of excited state particles is over 3 μs. The temporal electron temperature is calculated, which stays the same in the most of the time during plasma expansion.

Keywords

copper; excited states; ion accelerators; ion sources; laser fusion; plasma accelerators; plasma density; plasma diagnostics; plasma sources; plasma temperature; plasma transport processes; Cu; IFP; electron density; excited state particle lifetime; heavy ion fusion; induction accelerators; laser ion source; optical emission spectroscopy; plasma expansion; quadruplicated frequency Nd:YAG laser; spectrum diagnoses; temporal electron temperature; temporal spectra; wavelength 266 nm; Ion sources; Laser theory; Measurement by laser beam; Plasma temperature; Surface emitting lasers; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014 International Symposium on

Conference_Location

Mumbai

Print_ISBN

978-1-4799-6750-6

Type

conf

DOI

10.1109/DEIV.2014.6961741

Filename

6961741