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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

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.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then passed on to...
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...

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Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
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Published on: August 1, 2017

An interchangeable-cathode vacuum arc plasma source.

David K Olson1, Bryan G Peterson, Grant W Hart

  • 1Department of Physics and Astronomy, Brigham Young University, N283 ESC, Provo, Utah 84602, USA.

The Review of Scientific Instruments
|February 2, 2010
PubMed
Summary
This summary is machine-generated.

A novel, simplified vacuum arc plasma source was developed for (7)Be non-neutral plasma studies. This design enables easy cathode replacement, simplifying radioactive material use and offering versatile applications in plasma confinement.

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Area of Science:

  • Plasma Physics
  • Nuclear Physics

Background:

  • Metal vapor vacuum arc (MeVVA) concepts are utilized for plasma generation.
  • Non-neutral plasmas, particularly those involving radioactive isotopes like Beryllium-7 (7Be), require specialized plasma sources.
  • Existing MeVVA designs can be complex and costly, especially for applications involving radioactive materials.

Purpose of the Study:

  • To develop a simplified vacuum arc plasma source for generating (7)Be non-neutral plasma.
  • To demonstrate the capability of producing confinable charges using a novel cathode interchangeability mechanism.
  • To adapt MeVVA concepts for lower energy and density applications.

Main Methods:

  • A simplified vacuum arc design based on MeVVA principles was employed.
  • A trigger spark mechanism was used instead of a full vacuum arc for simplified operation.
  • A boron-carbide disk served as the interchangeable cathode target.
  • The plasma source was tested for charge production and energy confinement.

Main Results:

  • The plasma source successfully produced approximately 10(12) charges.
  • The generated plasma exhibited confinable energies.
  • The interchangeable cathode design facilitated the use of radioactive (7)Be.
  • The simplified design proved effective for lower energy and density plasma generation.

Conclusions:

  • The simplified vacuum arc design is a viable and effective plasma source for (7)Be non-neutral plasma.
  • The cathode interchangeability simplifies the handling of radioactive materials in plasma experiments.
  • The design is adaptable for various plasma confinement and full MeVVA applications.