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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Raman Spectroscopy Instrumentation: Overview

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Atomic Emission Spectroscopy: Instrumentation

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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.

Atomic Absorption Spectroscopy: Instrumentation

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Mass Analyzers: Common Types

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The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

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Updated: Jun 17, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

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A time-resolving spectrograph for free-flight ballistic range application.

¹AC Electronics Defense Research Laboratories,General Motors Corporation, Santa Barbara, California 93017, USA.

|January 12, 2010

Summary

This summary is machine-generated.

This study analyzed hypervelocity object emissions using spectroscopy. Researchers observed molecular species in the near wake of ablating models, suggesting potential for further wake studies.

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Area of Science:

Fluid Dynamics
Spectroscopy
Aerophysics

Background:

Understanding hypervelocity object dynamics is crucial for aerospace applications.
Spectroscopic analysis provides insights into the physical and chemical processes occurring during high-speed flight.
Previous studies have limited detailed spectral analysis of the near-wake region.

Purpose of the Study:

To obtain time-resolved spectra of hypervelocity spheres and cones.
To identify molecular species present in the near-wake region of ablating models.
To assess the feasibility of using advanced imaging for far-wake emission studies.

Main Methods:

Utilized a free-flight ballistic range.
Employed a large aperture, slitless spectrograph coupled with an image converter camera.
Analyzed spectral data from nonablating and ablating models at hypervelocities.

Main Results:

Observed emission primarily from the shock cap for nonablating spheres.
Identified molecular species like C(2), CH, CN, Cu(2), CuF, CuO, BeO, and AlO in the near wake of ablating models.
Detected distinct spectral signatures for hydrocarbon and metallic models.

Conclusions:

The study successfully characterized near-wake emissions from hypervelocity models.
Spectroscopic methods reveal the presence of specific molecular species under hypervelocity conditions.
Further investigation into far-wake emission using image intensifiers is warranted.