DEVELOPMENT OF LARGE AREA RF ION SOURCES FOR FUSION APPLICATIONS

被引：13

作者：

WELLS, SB ^{[1
]}

TAKEIRI, Y ^{[1
]}

NEWMAN, AF ^{[1
]}

MCADAMS, R ^{[1
]}

HOLMES, AJT ^{[1
]}

机构：

[1] NATL INST FUS SCI,NAGOYA 46401,JAPAN

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1992年 / 63卷 / 04期

关键词：

D O I：

10.1063/1.1142839

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A rf ion source with a large extraction area suitable for fusion applications is considered. The source is a metallic magnetic multipole bucket with an internal antenna to couple the rf (at a frequency of 2 MHz) to the plasma. The source is diagnosed by an array of Langmuir probes to measure uniformity, density, and temperature and a small probe accelerator to extract a negative ion beam. A two-turn antenna is found to couple more power into the plasma than a half-turn antenna. When operated as a negative ion source at low powers, the source efficiency is found to be high and not to have a strong dependence on gas pressure. An extracted negative ion current density of about 4 mA/cm2 at 7 mTorr was obtained when 3 kW of power was coupled into the plasma.

引用

页码：2735 / 2737

页数：3