Development of a compact permanent magnet helicon plasma source for ion beam bioengineering

作者：Kerdtongmee P^*; Srinoum D; Nisoa M

来源：Review of Scientific Instruments, 2011, 82(10): 103503.

DOI：10.1063/1.3646467

A compact helicon plasma source was developed as a millimeter-sized ion source for ion beam bioengineering. By employing a stacked arrangement of annular-shaped permanent magnets, a uniform axial magnetic flux density up to 2.8 kG was obtained. A cost effective 118 MHz RF generator was built for adjusting forward output power from 0 to 40 W. The load impedance and matching network were then analyzed. A single loop antenna and circuit matching elements were placed on a compact printed circuit board for 50 Omega impedance matching. A plasma density up to 1.1 x 10(12) cm(-3) in the 10 mm diameter tube under the magnetic flux density was achieved with 35 W applied RF power.

• 出版日期2011-10