Subscribe to our free daily newsletters
  Energy News  




Subscribe to our free daily newsletters



ENERGY TECH
Donut-shaped fusion plasmas decrease adverse turbulence
by Staff Writers
Washington DC (SPX) Feb 28, 2017


Toroidal fusion plasma.

Fusion research has been dominated by the search for a suitable way of ensuring confinement as part of the research into using fusion to generate energy. In a recent paper published in EPJ H, Fritz Wagner from the Max Planck Institute for Plasma Physics in Germany, gives a historical perspective outlining how our gradual understanding of improved confinement regimes for what are referred to as toroidal fusion plasmas - confined in a donut shape using strong magnetic fields-- have developed since the 1980s.

He explains the extent to which physicists' understanding of the mechanisms governing turbulent transport in such high-temperature plasmas has been critical in improving the advances towards harvesting fusion energy. The release of energy from fusion processes between deuterons and tritons (DT-fusion) requires high temperatures to overcome the Coulomb potential, high density for frequent collisions and a high energy confinement time.

Plasma is composed of light negative and heavy positive charges with strongly different mobilities. However, increasing the pressure by additional heating to bring the plasma closer to the fusion conditions causes turbulence to become more violent so that plasma confinement is degraded.

The level of adverse turbulence ultimately reduces the prospects of fusion. Physicists found in the 1980s that toroidally shaped plasmas of the tokamak type offer a path to low turbulence thanks to their ability to self-organise.

Over the course of the past 30 to 40 years, they came to realise that turbulence and plasma flow are linked and regulate each other.

Indeed, they found that the spatial variation of the plasma flow regulates the turbulence of the drift-wave type. They also found that this mechanism is another example of a self-organisation process known for a long time in geophysical fluid dynamics.

Research paper: The history of research into improved confinement regimes. F. Wagner (2017), European Physical Journal H, DOI 10.1140/epjh/e20

ENERGY TECH
UMD physicist improves method for designing fusion experiments
College Park MD (SPX) Feb 14, 2017
"Measure twice, cut once" is an old carpenter's proverb - a reminder that careful planning can save time and materials in the long run. The concept also applies to the design of stellarators, which are complex nuclear fusion experiments meant to explore fusion's potential as an energy source. Stellarators work by confining a ring of blazing-hot plasma inside a precisely shaped magnetic fie ... read more

Related Links
Springer
Powering The World in the 21st Century at Energy-Daily.com


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment on this article using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

ENERGY TECH
New Zealand lauded for renewables, but challenges remain

EU parliament backs draft carbon trading reforms

Taiwan lantern makers go green for festival of lights

Republican ex-top diplomats propose a carbon tax

ENERGY TECH
A new approach to improving lithium-sulfur batteries

Imaging the inner workings of a sodium-metal sulfide battery for first time

ABB delivers first urban battery storage solution in Denmark to support renewables

Romeo Power expands EV battery pack production in Southern California

ENERGY TECH
Breakthrough research for testing and arranging vertical axis wind turbines

German company to store US wind energy in batteries in Texas

US grid can handle more offshore wind power

Michigan meets renewable energy targets

ENERGY TECH
King County Metro signs Urban Solar on for rare 10 year contract

DuPont Photovoltaic Solutions Introduces New Solamet

SOVENTIX developing solar parks of up to 140 megawatts in Alberta, Canada

meeco installed biggest solar energy plant in Zimbabwe

ENERGY TECH
EU approves Hungary's Kremlin-backed nuclear plant

Researchers find new clues for nuclear waste cleanup

Next generation of nuclear robots will go where none have gone before

Areva narrows losses in 2016

ENERGY TECH
New materials could turn water into the fuel of the future

Novel 3-D manufacturing leads to highly complex, bio-like materials

Light-driven reaction converts carbon dioxide into fuel

New polymer additive could revolutionize plastics recycling

ENERGY TECH
Oil prices face pressure over slowing China

OPEC not entirely in compliance with production deal

Russia defers questions on Crimean oil and gas

Austrian energy OMV establishes Russian footprint

ENERGY TECH
Just how early is spring arriving in your neighborhood

Somali president declares 'national disaster' over drought

Warming ponds could accelerate climate change

Brazil's poorest region suffers worst drought in a century




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement