Title :
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
fDate :
Sept. 28 2014-Oct. 3 2014
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;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014 International Symposium on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4799-6750-6
DOI :
10.1109/DEIV.2014.6961741
