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Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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...
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...
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...
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
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).
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Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
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Rare-earth plasma light source for VUV applications.

G O'Sullivan, P K Carroll, T J McLlrath

    Applied Optics
    |March 25, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new compact light source generates vacuum ultraviolet (VUV) radiation using laser-produced plasmas. This versatile source shows promise for various applications requiring VUV light.

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    Area of Science:

    • Physics
    • Optics
    • Materials Science

    Background:

    • Laser-produced plasmas are a source of intense radiation.
    • Vacuum ultraviolet (VUV) radiation has unique applications in spectroscopy and materials analysis.
    • Developing compact and versatile VUV sources is an ongoing research area.

    Purpose of the Study:

    • To describe a compact and versatile light source for VUV radiation production.
    • To measure the spectral irradiance of laser-produced plasmas in the 115-220 nm range.
    • To compare VUV generation using CO(2) laser with a ruby laser.

    Main Methods:

    • Utilized laser-produced plasmas from gadolinium and ytterbium targets.
    • Employed a CO(2) laser for plasma generation.
    • Measured spectral irradiance in the 115-220 nm wavelength range.
    • Compared results with those obtained using a ruby laser.

    Main Results:

    • Successfully generated VUV radiation using laser-produced plasmas.
    • Quantified spectral irradiance in the 115-220 nm range for gadolinium and ytterbium targets.
    • Provided a comparative analysis of VUV output between CO(2) and ruby lasers.

    Conclusions:

    • The described compact source is effective for producing VUV radiation.
    • The spectral irradiance measurements provide valuable data for source characterization.
    • The comparison highlights the performance differences between laser types for VUV generation.