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Related Concept Videos

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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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...
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Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
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Published on: July 27, 2018

The Offner imaging spectrometer in quadrature.

Xesús Prieto-Blanco1, Carlos Montero-Orille, Héctor González-Nuñez

  • 1Departamento de Física Aplicada, Escola Universitaria de Optica e Optometría, Universidade de Santiago de Compostela, 15782 Galicia, Spain.

Optics Express
|July 1, 2010
PubMed
Summary

A novel Offner imaging spectrometer design uses off-plane gratings and a unique mirror configuration for improved performance. This compact system offers high spectral resolution, outperforming traditional designs for specific applications.

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Area of Science:

  • Optics and Spectroscopy
  • Instrument Design

Background:

  • Offner imaging spectrometers are crucial for spectral analysis.
  • Existing designs face limitations in compactness and spectral resolution.

Purpose of the Study:

  • To propose and describe a new Offner imaging spectrometer configuration.
  • To enhance system performance, particularly compactness and spectral resolution.

Main Methods:

  • Utilizes off-plane classical-ruled spherical diffraction gratings.
  • Employs a concave mirror in double reflection and a convex reflection grating in quadrature.
  • Features a concentric layout for simplified design.

Main Results:

  • Achieves anastigmatic designs for specific entrance slit points and wavelengths.
  • Demonstrates improved performance over analogous conventional in-plane systems.
  • Offers enhanced compactness and/or high spectral resolution.

Conclusions:

  • The proposed Offner spectrometer configuration offers significant advantages.
  • This design is particularly beneficial for applications demanding compactness and high spectral resolution.