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Related Concept Videos

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.
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...
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.
IR Spectrometers01:25

IR Spectrometers

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...
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...
UV–Vis Spectroscopy: Beer–Lambert Law01:09

UV–Vis Spectroscopy: Beer–Lambert Law

The Beer-Lambert law describes the relationship between absorbance and concentration, which combines the principles established by scientists Johann Heinrich Lambert and August Beer. Lambert's law states that when light passes through a medium, the loss in intensity is directly proportional to the original intensity and the path length of the light. Beer's law proposed that the transmittance of a solution remains constant if the product of concentration and path length is constant. The modern...

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Updated: May 16, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

[EUV flat field grating spectrometer and performance measurement].

Xue-wei Du1, Yong-cai Shen, Chao-yang Li

  • 1National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China. dxw@mail.ustc.edu.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|November 20, 2012
PubMed
Summary
This summary is machine-generated.

A new high-resolution extreme ultraviolet spectrometer was developed for diagnosing magnetically confined plasmas. This advanced instrument achieves a spectral resolution of 0.015 nm, crucial for plasma research.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Area of Science:

  • Plasma Physics
  • Spectroscopy
  • Optics

Context:

  • Magnetically confined plasmas are crucial for fusion energy research.
  • Accurate plasma diagnostics are essential for understanding and controlling plasma behavior.
  • Existing spectrometers may lack the required resolution for detailed plasma analysis.

Purpose:

  • To develop and present a high-resolution extreme ultraviolet (EUV) spectrometer.
  • To enable precise diagnosis of magnetically confined plasmas.
  • To achieve a spectral resolution of 0.015 nm at 20 nm.

Summary:

  • A novel EUV spectrometer utilizing a holographic spherical varied line spacing concave grating and a deeply cooled back-illuminated CCD detector has been engineered.
  • The spectrometer operates at a grazing incidence angle of 3 degrees, covering a wavelength range of 5-50 nm.
  • Wavelength calibration confirmed an accuracy of 0.003 nm and a spectral resolution of 0.015 nm at 20 nm, meeting design specifications.

Impact:

  • Provides enhanced diagnostic capabilities for magnetically confined plasmas.
  • Facilitates more accurate studies of plasma properties and dynamics.
  • Contributes to advancements in fusion energy research and other plasma-based technologies.