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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

3.3K
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...
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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....
563
Calculation of Electric Flux01:25

Calculation of Electric Flux

2.7K
Consider the electric field of an oppositely charged, parallel-plate system and an imaginary box between those plates. Let the bottom face of the box be ABCD, and the top face be FGHK. The electric field between the plates is uniform and points from the positive plate toward the negative plate. The calculation of this field's flux through the box's various faces shows that the net flux through the box is zero. Why does the flux cancel out here?
2.7K
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals01:17

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

3.2K
Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
3.2K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.5K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.5K
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

498
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...
498

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Updated: Dec 29, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
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RBSP-ECT Combined Spin-Averaged Electron Flux Data Product.

A J Boyd1, G D Reeves1,2, H E Spence3

  • 1New Mexico Consortium Los Alamos NM USA.

Journal of Geophysical Research. Space Physics
|February 7, 2020
PubMed
Summary
This summary is machine-generated.

A new dataset combines electron flux measurements from the Van Allen Probes

Keywords:
ECTHOPEMagEISREPTVan Allen Probesradiation belts

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Area of Science:

  • Space Physics
  • Plasma Physics
  • Particle Physics

Background:

  • The Earth's radiation belts are dynamic regions of energetic charged particles.
  • Understanding particle acceleration and loss mechanisms is crucial for space weather prediction.
  • Previous studies have relied on limited energy range or instrument-specific data.

Purpose of the Study:

  • To present a new, unified dataset of electron flux measurements.
  • To provide a consistent, cross-calibrated dataset for the inner magnetosphere.
  • To facilitate research on energetic particle dynamics across a wide energy spectrum.

Main Methods:

  • Combining spin-averaged electron flux measurements from the Van Allen Probes' ECT suite.
  • Developing a methodology for data merging and consistency checks.
  • Producing three-minute-averaged flux spectra from 15 eV to 20 MeV.

Main Results:

  • A comprehensive dataset of electron flux spectra is now available.
  • The data spans a wide energy range (15 eV to 20 MeV).
  • The dataset covers the period from September 2013 to the present.

Conclusions:

  • This new data product enhances the utility of ECT data.
  • It offers a valuable resource for studying inner magnetosphere dynamics.
  • Researchers can now examine particle behavior across a broader energy range with improved consistency.