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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

2.4K
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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Electron Behavior00:54

Electron Behavior

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Overview
Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the...
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

268
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....
268
Overview of Electron Microscopy01:25

Overview of Electron Microscopy

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The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can only magnify 1000X, and a few can magnify up to 1500X. Electrons, like electromagnetic radiation, can behave like waves, but with wavelengths of 0.005 nm, they produce significantly greater resolution up to 0.05 nm as compared to 500 nm for visible light. An electron microscope (EM) can create a sharp image that is magnified up to 2,000,000X.
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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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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...
218
Electron Orbital Model01:18

Electron Orbital Model

68.1K
Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
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Updated: Aug 7, 2025

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
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Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

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A Case for Electron-Astrophysics.

Daniel Verscharen1,2, Robert T Wicks3,1, Olga Alexandrova4

  • 1Mullard Space Science Laboratory, University College London, Dorking, UK.

Experimental Astronomy
|March 14, 2023
PubMed
Summary
This summary is machine-generated.

Electron-astrophysics explores plasma behavior at the smallest scales, focusing on electron dynamics and heat flux. This research is crucial for understanding plasma turbulence and energy transfer in space and astrophysical environments.

Keywords:
ElectronsVoyage 2050plasma astrophysicssolar windspace missionsspace plasma

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Area of Science:

  • Plasma Physics
  • Astrophysics
  • Space Physics

Background:

  • Electron dynamics govern plasma behavior at the smallest scales, representing a frontier in research.
  • Understanding electron scales is critical for plasma turbulence dissipation and heat flux regulation.

Purpose of the Study:

  • To address fundamental questions in electron-astrophysics.
  • To review outstanding science questions and their importance.
  • To present a roadmap for future research through novel space missions.

Main Methods:

  • Analysis of astrophysical processes at electron scales.
  • Investigating electron-kinetic regimes and plasma turbulence.
  • Studying electron heat flux and thermal energy transfer.

Main Results:

  • Identified electron scales as key to plasma turbulence dissipation.
  • Highlighted the role of electrons in thermal energy transfer via heat flux.
  • Established the link between electron processes and fundamental science questions.

Conclusions:

  • Electron-astrophysics is essential for advancing space physics, astrophysics, and laboratory plasma research.
  • Novel space missions are proposed to answer key questions regarding electron dynamics.
  • Further research is needed to understand electron-kinetic processes and heat flux regulation.