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Related Concept Videos

Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

281
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...
281
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

345
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....
345
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

696
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.
696
Flame Photometry: Lab01:16

Flame Photometry: Lab

448
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
448

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The CoPhyLab comet-simulation chamber.

C Kreuzig1, G Kargl2, A Pommerol3

  • 1Institut für Geophysik und extraterrestrische Physik (IGeP), TU Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany.

The Review of Scientific Instruments
|December 2, 2021
PubMed
Summary
This summary is machine-generated.

The Comet Physics Laboratory (CoPhyLab) simulates cometary conditions to study ice-dust properties. This research provides key insights into comet formation and the origins of early Solar System bodies.

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Area of Science:

  • Planetary Science
  • Cosmochemistry
  • Laboratory Astrophysics

Background:

  • Comets offer vital clues to the early Solar System's composition and evolution.
  • Understanding cometary nuclei's physical properties is crucial for planetary formation theories.

Purpose of the Study:

  • To investigate the physics of comets using analog materials under simulated space conditions.
  • To analyze processes within cometary nuclei, their activity, and surface evolution under solar illumination.

Main Methods:

  • Construction of a new laboratory featuring a large-scale comet-simulation chamber (L-Chamber).
  • Utilizing ice-dust samples (up to 250 mm diameter) under low temperatures (<120 K) and pressures (~10-6 mbar).
  • Employing 14 scientific instruments to monitor sample evolution with precise weight change measurements.

Main Results:

  • The L-Chamber enables long-term (weeks) experiments under controlled, comet-like conditions.
  • Radiation cooling system allows precise measurement of sample mass changes.
  • Data gathered will detail physical property evolution of cometary analogs.

Conclusions:

  • CoPhyLab provides a unique facility for cometary analog research.
  • The study enhances understanding of comet nucleus processes and solar system origins.
  • Findings contribute to models of primitive body evolution.