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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

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Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
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Related Experiment Video

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Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Published on: August 1, 2017

Lithium plasma emitter for collisionless magnetized plasma experiment.

Eiichirou Kawamori¹, Jyun-Yi Lee, Yi-Jue Huang

¹Institute of Space, Astrophysical and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan.

The Review of Scientific Instruments

|October 7, 2011

Summary

A new lithium plasma emitter offers stable, low-temperature, collisionless conditions for experiments. This device synthesizes lithium plasma for advanced magnetized plasma research.

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Area of Science:

Plasma Physics
Materials Science

Background:

Magnetized plasma experiments require specific conditions like low temperature and minimal fluctuations.
Existing plasma generation methods may not consistently provide quiescent and collisionless environments.

Purpose of the Study:

To develop and characterize a novel lithium plasma emitter.
To achieve quiescent and low-temperature collisionless plasma conditions for magnetized plasma experiments.

Main Methods:

Synthesized lithium plasma by heating a mixture of lithium beta-eucryptite and lanthanum-hexaboride (LaB(6)) powders.
Utilized a tungsten heater for direct heating and thermal emission of ions and electrons.
Operated the emitter at approximately 1500 K.

Main Results:

Generated a lithium plasma with a diameter of approximately 15 cm in a magnetic mirror configuration.
Achieved electron densities in the range of 10^12-10^13 m^-3.
Obtained low electron temperatures between 0.1-0.8 eV with plasma density fluctuations below 1%.

Conclusions:

The newly developed lithium plasma emitter successfully provides quiescent and low-temperature collisionless plasma.
This emitter is suitable for advanced magnetized plasma experiments requiring stable plasma conditions.