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Related Concept Videos

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....
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

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Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
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Atomic Emission Spectroscopy: Lab01:29

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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...
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Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
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Atomic Emission Spectroscopy: Instrumentation01:22

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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.
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Atomic Emission Spectroscopy: Overview01:20

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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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The integrated miniaturized electrostatic analyzer: A space plasma environment sensor.

G R Wilson1, C A Maldonado2, C L Enloe3

  • 1Physics Department, University of Colorado at Colorado Springs, 1420 Austin Bluffs Pkwy, Colorado Springs, Colorado 80918, USA.

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The integrated Miniaturized Electrostatic Analyzer (iMESA) successfully measured ion density, ion temperature, and spacecraft potential in Earth's ionosphere. This satellite-based sensor met all scientific mission objectives, validating its performance.

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Area of Science:

  • Space physics and atmospheric science
  • Satellite-based remote sensing
  • Ionospheric research

Background:

  • The ionosphere plays a crucial role in space weather and satellite operations.
  • Accurate in-situ measurements of ionospheric plasma properties are essential for scientific understanding.
  • Previous instruments have provided valuable data, but continuous improvements in sensor technology are needed.

Purpose of the Study:

  • To deploy and evaluate the integrated Miniaturized Electrostatic Analyzer (iMESA) on the STPSat-3 satellite.
  • To measure key ionospheric parameters: plasma density, plasma temperature, and spacecraft potential.
  • To assess the overall success of the iMESA scientific mission based on data quality and achievement of objectives.

Main Methods:

  • The iMESA instrument utilized electrostatic analysis to measure ion current density.
  • Spacecraft motion through the ionosphere enabled sampling every 10 seconds.
  • Ground-based post-processing and numerical analysis of current density spectra derived plasma parameters.

Main Results:

  • The iMESA instrument successfully measured ion density and ion temperature within expected ranges.
  • Quantification of spacecraft potential relative to the ambient plasma potential was achieved.
  • Data analysis confirmed that measured values align with existing literature predictions.

Conclusions:

  • The iMESA instrument successfully met all three primary scientific objectives.
  • The performance evaluation indicates a successful scientific mission for ionospheric research.
  • The study validates the design and data processing of the iMESA sensor for future applications.