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Related Concept Videos

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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

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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...
676
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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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....
201
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

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.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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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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Electrospray Ionization (ESI) Mass Spectrometry01:12

Electrospray Ionization (ESI) Mass Spectrometry

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Higher molecular weight biomolecules are nonvolatile compounds that may decompose before ionizing or vaporizing during mass analysis with conventional electron impact ionization methods. Accordingly, electrospray ionization (ESI) is the favored method for vaporizing and ionizing biomolecules as it circumvents rapid fragmentation and enables the recording of mass signals for the entire biomolecule.
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
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Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

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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.
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Related Experiment Video

Updated: Jun 16, 2025

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
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Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

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Polarization-separated double-imaging spectroscopy for weakly-ionized plasma diagnostics.

Junhwi Bak, Takuya Koiso, Richard Miles

    Optics Express
    |June 14, 2025
    PubMed
    Summary
    This summary is machine-generated.

    A new technique called polarization-separated double-imaging spectroscopy (PoDIS) effectively separates rotational Raman and Thomson scattering signals. This allows for precise, independent measurement of neutral and electron thermal properties in plasma diagnostics.

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    Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
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    Total Internal Reflection Absorption Spectroscopy TIRAS for the Detection of Solvated Electrons at a Plasma-liquid Interface
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    Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
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    Area of Science:

    • Plasma physics
    • Spectroscopy
    • Laser diagnostics

    Background:

    • Laser Thomson scattering is crucial for measuring electron thermal properties in plasma diagnostics.
    • Weakly-ionized plasmas present challenges due to spectral overlap from Mie, Rayleigh, and rotational Raman scatterings.
    • Existing methods struggle to isolate Thomson scattering signals in complex plasma environments.

    Purpose of the Study:

    • To introduce a novel imaging spectroscopy technique, polarization-separated double-imaging spectroscopy (PoDIS).
    • To demonstrate PoDIS's capability in separating superimposed scattering spectra without prior assumptions.
    • To enable independent determination of neutral and electron thermal properties.

    Main Methods:

    • Development and application of polarization-separated double-imaging spectroscopy (PoDIS).
    • Utilizing an atmospheric plasma jet as a testbed for the technique.
    • Analyzing spectral data to differentiate between rotational Raman and Thomson scattering signals.

    Main Results:

    • PoDIS successfully separated rotational Raman and Thomson scattering spectra from a superimposed signal.
    • The technique operated effectively without requiring prior knowledge of neutral or electron thermal properties.
    • Independent spectral fitting for rotational Raman and Thomson scattering was achieved.

    Conclusions:

    • PoDIS offers a robust solution for resolving spectral overlaps in plasma diagnostics.
    • The technique enables accurate and independent characterization of neutral and electron thermal properties.
    • PoDIS enhances the precision and reliability of laser-based plasma analysis.