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Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...

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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Ion-Exchange Chromatography

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Related Experiment Video

Updated: May 24, 2026

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Published on: May 9, 2020

New ion source for KSTAR neutral beam injection system.

Tae-Seong Kim¹, Seung Ho Jeong, Sang-Ryul In

¹Department of Nuclear Fusion Engineering Development, Korea Atomic Energy Research Institute, Daejeon 305-353, South Korea. tskim@kaeri.re.kr

The Review of Scientific Instruments

|March 3, 2012

Summary

This summary is machine-generated.

A new ion source for the KSTAR tokamak will enhance neutral beam injection (NBI) performance. This advanced source aims for 2 MW deuterium beam power at 100 keV, improving KSTAR plasma heating efficiency.

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Area of Science:

Fusion Energy Research
Plasma Physics
Accelerator Technology

Background:

The KSTAR tokamak's neutral beam injection system (NBI-1) currently uses a single prototype ion source.
Previous campaigns (2010-2011) delivered 0.7-1.6 MW deuterium neutral beam power at 70-100 keV.

Purpose of the Study:

To develop and prepare an advanced ion source for the 2012 KSTAR campaign.
To significantly improve neutral beam injection performance for enhanced plasma heating.

Main Methods:

Design of a new ion source with high transparency (∼56%) without compromising beam optics.
Utilizing a horizontally cusped bucket type plasma generator with an integrated anode.
Employing a four-grid accelerator assembly with copper apertures and aluminum alloy flanges, insulated by PEEK.

Main Results:

The new ion source is designed for 2 MW deuterium beam power injection at 100 keV.
Achieved high transparency without deteriorating beam optics.

Conclusions:

The advanced ion source is expected to enhance KSTAR's plasma heating capabilities.
Completion and testing of the new ion source are scheduled for 2011.