Diagnostics of a negative hydrogen ion source based on a planar-coil inductively-driven discharge

Recent activity on a volume-production negative-hydrogen-ion source with the design of a matrix of small-radius discharges inductively driven by a planar coil is reported. A single discharge of the matrix has been studied by employing probe-and laser-photodetachment diagnostics. The measurements hav...

Full description

Saved in:
Bibliographic Details
Main Authors: Lishev, Stiliyan St, Shivarova, Antonia P., Iordanov, Dimitar I., Todorov, Dimitar T., Demerdzhiev, Angel P.
Format: Conference Proceeding
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANIONS
ELECTRIC POTENTIAL
ELECTRON DENSITY
HIGH-FREQUENCY DISCHARGES
HYDROGEN IONS
ION DENSITY
LASERS
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
POWER INPUT
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recent activity on a volume-production negative-hydrogen-ion source with the design of a matrix of small-radius discharges inductively driven by a planar coil is reported. A single discharge of the matrix has been studied by employing probe-and laser-photodetachment diagnostics. The measurements have been carried out in the first - small-size - chamber of a two-chamber discharge vessel, with rf power introduced by a planar coil positioned on its front wall. The measured profiles of the negative ion density show strong axial dependence, with two maxima located at the positions corresponding to the maxima of the dc potential, where the maxima of the electron density are also located. The first maximum is in the vicinity of the rf power input and the second one is close to the interface between the two chambers of the discharge vessel.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4792794