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Atomic Emission Spectroscopy: Instrumentation

Atomic Emission Spectroscopy: Instrumentation

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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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
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Updated: Jul 12, 2026

Bringing the Visible Universe into Focus with Robo-AO

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Published on: February 12, 2013

The upgraded arecibo observatory.

Science (New York, N.Y.)

|October 18, 1974

Summary

The Arecibo Observatory upgraded its giant reflector antenna with a new surface and S-band radar capabilities. These enhancements significantly boost its research potential in radio and radar astronomy.

Area of Science:

Astronomy and Astrophysics
Radio Astronomy
Radar Astronomy

Background:

The Arecibo Observatory's primary reflector antenna required modernization to enhance its observational capabilities.
Previous limitations in surface accuracy and frequency operation restricted advanced research.

Purpose of the Study:

To detail the significant upgrades performed on the Arecibo Observatory's main reflector antenna.
To introduce the new S-band radar transmitter and its integration with the existing UHF system.
To highlight the enhanced research potential in radio and radar astronomy.

Main Methods:

Replaced the reflector surface with aluminum panels, achieving 3.2 mm root-mean-square (r.m.s.) accuracy.
Stabilized and modified the superstructure to support S-band frequency operations.

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Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Published on: April 22, 2013

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Bringing the Visible Universe into Focus with Robo-AO

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Published on: February 12, 2013

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Published on: April 22, 2013

Integrated a high-power S-band radar transmitter alongside the existing UHF system.

Main Results:

Achieved a surface accuracy of 3.2 mm r.m.s. across the reflector.
Enabled operation at S-band frequencies, expanding the observatory's spectral range.
Successfully integrated new high-power radar transmitter capabilities.

Conclusions:

The Arecibo Observatory's upgrades have significantly improved its precision and operational flexibility.
The enhanced system offers advanced capabilities for radio and radar astronomy research.
These improvements position the observatory for new discoveries in cosmic studies.