Author:
Zhang A.L.,Peng S.X.,Wu W.B.,Ma T.H.,Cui B.J.,Jiang Y.X.,Li K.,Zhang J.F.,Zhang T.,Wen J.M.,Xu Y.,Guo Z.Y.,Chen J.E.
Abstract
Abstract
To generate high-current hard-to-ionize elements such as
B+, a hybrid ion source that combines electron cyclotron
resonance and thermal surface ionization, which is called a
high-temperature surface microwave source (HSMS), is under
development. A high-temperature hot surface (2000°) and
microwave heating are the essential components of an HSMS to produce
high-energy electrons for B+ generation. A helical tungsten
filament is used in the HSMS source to obtain a high temperature and
provide an axial configuration with a magnetic field of
approximately 87.5 mT for the 2.45 GHz electron cyclotron
resonance (ECR). The effects of high-temperature surface ionization
and ECR ionization were separately evaluated. The magnetic field
configuration, microwave power, and air pressure have been studied
through this plasma model. A 30% B+ improvement was achieved.
Subject
Mathematical Physics,Instrumentation