Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

Thomson's e/m Experiment

Thomson's e/m Experiment

In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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.

Tandem Mass Spectrometry

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Initial results of the high resolution edge Thomson scattering upgrade at DIII-D.

The Review of scientific instruments·2012

Same author

Vascular access type and risk of mortality in a national prospective cohort of haemodialysis patients.

QJM : monthly journal of the Association of Physicians·2012

Same author

Resonant pedestal pressure reduction induced by a thermal transport enhancement due to stochastic magnetic boundary layers in high temperature plasmas.

Physical review letters·2009

Same author

Dust measurements in tokamaks (invited).

The Review of scientific instruments·2008

Same author

(R)-3,3,3-Trifluoro-2-hydroxy-2-methylpropionamides are orally active inhibitors of pyruvate dehydrogenase kinase.

Journal of medicinal chemistry·1999

Same author

A random survey of the Cryptosporidium parvum genome.

Infection and immunity·1999

Search research articles

Related Experiment Video

Updated: Jun 7, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Thomson scattering diagnostic upgrade on DIII-D.

D M Ponce-Marquez¹, B D Bray, T M Deterly

¹General Atomics, P.O. Box 85608, San Diego, California 092186-5608, USA. poncedm@fusion.gat.com

The Review of Scientific Instruments

|November 2, 2010

Summary

The DIII-D Thomson scattering system upgrade enhanced temperature and density measurements. Faster detectors and new hardware improve signal-to-noise ratio and spatial channel capacity for fusion plasma research.

More Related Videos

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Preparing an Isotopically Pure ²²⁹Th Ion Beam for Studies of ^229mTh

Published on: May 3, 2019

$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Related Experiment Videos

Last Updated: Jun 7, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Preparing an Isotopically Pure ²²⁹Th Ion Beam for Studies of ^229mTh

Published on: May 3, 2019

$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Area of Science:

Plasma Physics
Fusion Energy Research
Diagnostic Systems

Background:

The DIII-D tokamak requires advanced diagnostics for accurate plasma characterization.
Previous Thomson scattering system limitations included spatial resolution and signal acquisition capabilities.
Upgrades are essential for improving plasma confinement and understanding fusion processes.

Purpose of the Study:

To detail the first phase of the DIII-D Thomson scattering system upgrade.
To evaluate the performance improvements of the upgraded system compared to the original.
To outline the planned second phase of the upgrade, including new laser installations.

Main Methods:

Installation of new data acquisition hardware to increase spatial channels and acquisition time.
Replacement of detector modules with faster transimpedance circuitry.
Performance comparison between the original and upgraded Thomson scattering systems.

Main Results:

The upgraded system demonstrates a twofold increase in signal-to-noise ratio.
Enhanced capacity for additional spatial channels and longer acquisition times for temperature and density measurements.
The upgrade facilitates future expansion to the edge plasma system.

Conclusions:

The first phase of the DIII-D Thomson scattering system upgrade significantly enhances measurement capabilities.
The improved signal-to-noise ratio and spatial resolution are critical for detailed plasma analysis.
The planned second phase will further advance diagnostic capabilities for fusion energy research.