scholarly journals Highly Efficient Small Anode Ion Source

Plasma ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 214-221
Author(s):  
Vadim Dudnikov ◽  
Andrei Dudnikov
Keyword(s):  
Space Charge ◽  
Production Efficiency ◽  
Ion Beam ◽  
Emission Current Density ◽  
Ion Source ◽  
Charge Neutralization ◽  
Material Recycling ◽  
Beam Production ◽  
Operating Lifetime ◽  
Gas Space

We describe some modifications to a Bernas-type ion source that improve the ion beam production efficiency and source operating lifetime. The ionization efficiency of a Bernas type ion source has been improved by using a small anode that is a thin rod, oriented along the magnetic field. The transverse electric field of the small anode causes the plasma to drift in the crossed ExB field to the emission slit. The cathode material recycling was optimized to increase the operating lifetime, and the wall potential optimized to suppress deposition of material and subsequent flake formation. A three-electrode extraction system was optimized for low energy ion beam production and efficient space charge neutralization. An ion beam with emission current density up to 60 mA/cm2 has been extracted from the modified source running on BF3 gas. Space charge neutralization of positive ion beams was improved by injecting electronegative gases.

scholarly journals A Study on the negative ion beam production in the ININ sputtering ion source

2019 ◽  
Vol 65 (3) ◽  
pp. 278
Author(s):  
C. A. Valerio Lizarraga ◽  
C. Duarte-Galvan ◽  
I. Leon-Monzon ◽  
P. Villaseñor ◽  
And J. Aspiazu
Keyword(s):  
Space Charge ◽  
Particle Tracking ◽  
Linear Accelerator ◽  
Ion Beam ◽  
Negative Ions ◽  
Ion Source ◽  
Beam Dynamics ◽  
Negative Ion ◽  
Beam Generation ◽  
Beam Production

To improve the beam brightness produced by a Source of Negative Ions by Cesium Sputtering we studied the beam generation in the 12~MeV Vandergraff linear accelerator at Instituto Nacional de Investigaciones Nucleares. Results of 3D particle tracking simulations of the ion source and beamline have been compared with measurements, with better agreement than traditional codes that only take into account the negative beam, and they determine a suppression in the Cs$^{+}$ production due to space charge, which in turn explains the intensity limits for negative beam production in both ionizers, and the best way to overpass them. Also, the beam dynamics variation due to the erosion of the target inside the cathode has been determined, helping to prevent beam losses and enhance the beam brightness.

Ion beam extraction with ion space‐charge compensation in beam‐plasma type ion source

1982 ◽  
Vol 53 (9) ◽  
pp. 6018-6028 ◽  
Author(s):  
Junzo Ishikawa ◽  
Fumimichi Sano ◽  
Toshinori Takagi
Keyword(s):  
Space Charge ◽  
Ion Beam ◽  
Charge Compensation ◽  
Ion Source ◽  
Beam Extraction ◽  
Beam Plasma

Low‐energy ion beam space‐charge neutralization

1994 ◽  
Vol 65 (4) ◽  
pp. 1451-1453 ◽  
Author(s):  
S. V. Dudin ◽  
A. V. Zykov ◽  
V. I. Farenik
Keyword(s):  
Space Charge ◽  
Ion Beam ◽  
Low Energy ◽  
Charge Neutralization

scholarly journals Low Energy Metal Ion Beam Production with a Modified Freeman-Type Ion Source for Development of Novel Catalysts

2012 ◽  
Vol 10 ◽  
pp. 139-144 ◽  
Author(s):  
S. Yoshimura ◽  
M. Kiuchi ◽  
Y. Nishimoto ◽  
M. Yasuda ◽  
A. Baba ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Beam ◽  
Ion Source ◽  
Low Energy ◽  
Beam Production

A 13.56MHz multicusp ion source for gaseous ion-beam production

1999 ◽  
Vol 112 (1-3) ◽  
pp. 314-317 ◽  
Author(s):  
Dheerawan Boonyawan ◽  
Pradoong Suanpoot ◽  
Thiraphat Vilaithong
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Multicusp Ion Source ◽  
Beam Production

Meter-long plasma source for heavy ion beam space charge neutralization

2007 ◽  
Author(s):  
Philip C. Efthimion ◽  
Erik P. Gilson ◽  
Ronald C. Davidson ◽  
Larry Grisham ◽  
B. Grant Logan ◽  
...  
Keyword(s):  
Space Charge ◽  
Ion Beam ◽  
Plasma Source ◽  
Heavy Ion ◽  
Charge Neutralization ◽  
Heavy Ion Beam
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