UM-Bot Posted August 22, 2017 #1 Share Posted August 22, 2017 Scientists have developed a new way of heating fusion plasmas inside tokamak nuclear fusion reactors. http://www.unexplained-mysteries.com/news/310915/plasma-heating-method-offers-fusion-boost Link to comment Share on other sites More sharing options...
ROGER Posted August 22, 2017 #2 Share Posted August 22, 2017 My understanding of this is poor at best . Does this mean more heat energy being generated ? And it has to be converted to electrical power for our use ? Link to comment Share on other sites More sharing options...
paperdyer Posted August 22, 2017 #3 Share Posted August 22, 2017 My understanding is low as well. My understanding is fusion is defined as getting more energy out than you put into the reaction. But as Roger asked, is this still sounds using heat energy to produce electricity similarly to the way a fission reactor works? A great leap in technology, but still sounds a bit inefficient having to convert the heat to electricity. Link to comment Share on other sites More sharing options...
TaintlessMetals Posted August 22, 2017 #4 Share Posted August 22, 2017 Essentially it allows them to better understand how to maintain a fusion reaction. 1 Link to comment Share on other sites More sharing options...
Tom the Photon Posted August 22, 2017 #5 Share Posted August 22, 2017 Yes to ROGER and paperdryer. This is 'just' another way of generating enormous amounts of heat to drive turbines that generate the electricity. Other ways include burning fossil fuels and nuclear fission. The problem is - to achieve fusion positively-charged particles must be forced together, but the forces between them are enormous (think of the strongest magnets you've played with, times a million million million million). This happens all the time inside stars where conditions are right: high density (lots of particles crammed together) and high temperature (particles are moving really, really fast). On Earth we can't create a plasma approaching the density inside the Sun, so we need much higher temperatures if we hope to achieve fusion. So we have to heat these particles hotter and hotter to the point where temperatures in kelvin have no real meaning (150 000 000 K anyone?) so particle energies are instead expressed in terms of electronvolts eV, which is basically the voltage required to make them move at a certain speed. So: we pump in huge amounts of energy using electricity to generate high temperatures. This creates fusion which in turn releases vast amounts of energy (think of the H-bomb) that has to be contained and converted back into useful electricity. Link to comment Share on other sites More sharing options...
Harte Posted August 22, 2017 #6 Share Posted August 22, 2017 We can already heat hydrogen to fusion temperatures. It's sort of dangerous when we don't have sure containment. Just like TaintlessMetals said, this will allow scientists to study the behavior of ultra-high temperature particles without having to worry about the fusion reaction that results with hydrogen. Having such particles on hand allows you to try different things with your containment method, which could lead to the sort of containment we'll have to have to make fusion power plants a reality. This is clearly stated in the front page U-M article: Quote "To be able to create such energetic ions in a non-activated device (not doing a huge amount of fusion) is beneficial, because we can study how ions with energies comparable to fusion reaction products behave, how well they would be confined." Harte Link to comment Share on other sites More sharing options...
Harte Posted August 22, 2017 #7 Share Posted August 22, 2017 Non-activated fusion product: Quote (not doing a huge amount of fusion) Figure it out from there. Hint - antonym. Harte Link to comment Share on other sites More sharing options...
Harte Posted August 23, 2017 #8 Share Posted August 23, 2017 10 hours ago, seanjo said: So you don't know either. Tells you right there in the article. As I said. Harte Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now