Title :
Laboratory investigation of vapor shielding for lithium-coated molybdenum in DEVeX
Author :
Jung, S. ; Andruczyk, D. ; Ruzic, D.N.
Author_Institution :
Nucl., Plasma, & Radiol. Eng, Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Abstract :
To investigate an effect of lithium on a molybdenum target, a triple Langmuir probe diagnostics [1-3] and target temperature measurement are carried out. Several experimental scenarios are tested to optimize the device for the vapor shielding experiment. A lithium sputtering system is used to deposit lithium on a molybdenum target. A triple Langmuir probe is placed near the target at various pressures to estimate change of plasma density and electron temperature and their effects on vapor shielding. Temperature increase at the target is measured by a thermocouple and its relation with plasma parameter and lithium is discussed in detail.
Keywords :
Langmuir probes; fusion reactor design; fusion reactor operation; plasma confinement; plasma density; plasma diagnostics; plasma temperature; plasma-wall interactions; Langmuir probe diagnostics; electron temperature; lithium effect; lithium sputtering system; lithium-coated molybdenum; molybdenum target; plasma parameter; target temperature measurement; vapor shielding experiment; Electrodes; Inductors; Laboratories; Magnetic noise; Magnetic shielding; Materials; Plasmas; lithium; molybdenum; triple langmuir probe; vapor shielding;
Conference_Titel :
Fusion Engineering (SOFE), 2011 IEEE/NPSS 24th Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4577-0669-1
Electronic_ISBN :
1078-8891
DOI :
10.1109/SOFE.2011.6052299
