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Related Concept Videos

Mass Analyzers: Overview01:13

Mass Analyzers: Overview

The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
Mass Spectrometers01:16

Mass Spectrometers

This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...
MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...

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Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet (VUV) Synchrotron Radiation
09:53

Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet (VUV) Synchrotron Radiation

Published on: October 30, 2012

Variable magnification spectrometer.

M Clement, B Moulin, D Pinet

    Applied Optics
    |February 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel high-speed spectrometer utilizes a Fabry-Perot disperser for pulsed plasma line profile measurements. Its electronic scanning offers advantages in simplicity and direct visualization without mechanical parts.

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    Published on: March 24, 2016

    Area of Science:

    • Spectroscopy
    • Plasma Physics
    • Optical Instrumentation

    Background:

    • Accurate measurement of line profiles is crucial for understanding pulsed plasma characteristics.
    • Existing spectroscopic methods may involve complex mechanical components, limiting speed and reliability.

    Purpose of the Study:

    • To introduce a new high-speed spectrometer designed for pulsed plasma diagnostics.
    • To highlight the advantages of electronic radial scanning over mechanical scanning.

    Main Methods:

    • Design of a spectrometer incorporating a Fabry-Perot etalon as the dispersing element.
    • Implementation of an electronic radial scanning mechanism for spectral analysis.
    • Utilizing the device for measuring line profiles emitted by pulsed plasmas.

    Main Results:

    • The developed spectrometer enables high-speed measurement of spectral line profiles.
    • Electronic radial scanning eliminates the need for mechanical scanning components.
    • The device demonstrates simplicity and allows for direct visualization of stored data.

    Conclusions:

    • The new spectrometer provides an efficient and advanced tool for pulsed plasma research.
    • Electronic scanning offers significant advantages in terms of speed, simplicity, and reliability for spectroscopic measurements.