Fusion Definition and 834 Threads

Fusion for power?? I am guessing that the Coulomb Barrier is the major problem? What exactly is necessary to breach the Barrier, as far as the amount of energy, heat, velocity of proton, etc, etc. If the Barrier COULD be breached without destroying the city at the same time, what other...

Kapitza won his prize for low temp. physics but opted to give his http://nobelprize.org/nobel_prizes/physics/laureates/1978/kapitsa-lecture.pdf" on nuclear fusion possibilities. I was interested in the plasma thin layer heat insulation effect he mentions, as I wasn't previously familiar though...

does the fusion process cause a chain reaction? or in a fusion reactor are lots of hydrogen atoms released to produce energy. does a fusion reactor heat water and produce steam to generate electricity? if you know anything then please let me know. thanks

Can anyone expound on product/design approach of the neutron-generator company NSD-Fusion GmbH? http://www.nsd-fusion.com/core-tech.php I'm guessing this is a spin off of the attempt by Daimler-Chrysler & G. Miley to build inertial electrostatic based N generators a few years back. Here...

http://www.springerlink.com/content/75p4572645025112/

What are the advantages and disadvantages of dt fusion over dd fusion?

Encyclopedias and the like seem to explain the energy gain from nuclear fusion reactions (as in the sun) in the following manner: for elements with atomic weights less than iron, the HIGHER the weight of the atom the less binding energy needed to overcome electromagnetic repulsion in the...

Can anyone please suggest a comparative pro/con review of the various fusion approaches for power generation? In those approaches I'd include: tokamaks, stellarators, spheromaks, pinches (Z, focus, etc) -ICF laser, ion beam -Other inertial electrostatic Beam-beam FRC ? Obviously the available...

in nuclear fusion, 2 nuclei join to make one correct, therefore there is a loss of mass and energy, that energy escapes as gamma rays etc. but in nuclear fission, as the binding energy increases surely energy must have to come from somewhere, but apparently energy is given out? also my...

hello I am a new members in this forum I have one question - Why do not melts plastic Pots If it filled with water? thank you.o:)

Could Bernouilli's principle be used to cause nuclear fusion.Instead of spherical targets for lasers to strike what if we had funnel shaped targets - lots of them - with their apices all meeting in roughly the same region of space.Lasers beams could strike the wide ends of the funnels and force...

Hey people, Had an idea about a device for nuclear fusion. Now I figure its too much mess and too many people will have to be envolved anyway to get a patent or something, even if it was a realistic idea - as remote as that chance may be, so if it works remember I thought about it so I could...

Hey people, Had an idea about a device for nuclear fusion. Now I figure its too much mess and too many people will have to be envolved anyway to get a patent or something, even if it was a realistic idea - as remote as that chance may be, so if it works remember I thought about it so I could...

Homework Statement a) 1H + 2H 3He + gamma The rest mass of the proton is 1.0073 u (unified atomic mass unit, 1.66 10-27 kg), the rest mass of the deuteron is 2.0136 u, the rest mass of the helium-3 nucleus is 3.0155 u, and the gamma ray is a high-energy photon, whose mass is zero. The strong...

What's the status of fusion energy? (not "CF") So, I know that fusion as an energy source has hit a lull of sorts. Could somebody fill me in on a few points (and correct any misconceptions I reveal in my questions). I'm working on a motivational lecture for my high school students, and I'd...

help! need help here because my answers are different from the answer on the book. just wanted to make sure that i am right. these are the problems: 1. How much heat is needed tor aise the temperature by 10 deg celsius of 5 kg og a substance of specific heat capacity 300J/kg deg celsius? what...

Pons and Fleischman used a palladium cathode in their cold fusion experiment of 1989 (cathode immersed in heavy water,D20) and they said that excess energy was released from the system. Since 1989 lots of experiments have been done and some researchers have agreed with the findings of Pons and...

Does anyone know of some easy to build cold fusion? I’m seeking to generate electricity

Homework Statement How many grams of aluminum at 90 C would have to be dropped into a hole in a block of ice at 0 C to melt 20 g of ice. Homework Equations Q = mcdelta T and Q = mLf c(H2O) = 1 cal/g.C c(Al) = 0.215 cal/g.C The Attempt at a Solution I can find the heat of fusion Q...

It is known from both theory and experiment that muon-catalyzed fusion of light isotopes occurs--see this link http://en.wikipedia.org/wiki/Muon-catalyzed_fusion. But my question--is Tau-Catalyzed Fusion also predicted by theory, let us say between the proton nucleus [P] and deuteron...

Determine the final temperature Tf, that results when 77 grams of ice at 0 °C are mixed with 300 grams of liquid water at 50 °C. Specific heat of water: c = 1.00 cal/(gram*°C). Heat of fusion for the ice - liquid water transition: cF = 79.7 cal/gram I have tried this several times and...

I need to explain fusion to some intro chem people, but they are really dense...Think this will work: *see picture

Apparently efforts to recover U from seawater were abandoned in the 1970s when studies concluded that it would cost about $1400 / lb. At the time, the spot price of U was about $40/lb. If the cost of recovering U from sea water can be brought down to $100 a pound, (current price is around $62...

I was reading about the undergraduate research opportunity at Princeton Plasma Physics Laboratory and I ran across this fun flash game. It simulates a tokamak, and you can control the power used for heating, magnetic field intensity, and plasma density...

What would happen if we applied high potential difference to a mixture of deuterium and tritium gases in a superconducting tube?:confused: Would the electric discharge give suffecient energy and conditions for fusion to occur??:rolleyes:

In the book, "Phase Transformations in Metals and Alloys" by D.E. Porter and K.E. Easterling on pg. 11, it says the entropy of fusion equation is \deltaS= \deltaH/Tm=L/Tm but what is L?

In normal hydrogen bomb tritium and deuterium atoms fuse and lithium-6 is used as a regenerator of tritium.I have got a new alternative in which the regenerator is produced in the reaction itself .Here is it- T + P => 2n + 2p {eq .taken in multiple of two} 4p...

This is definitely the field I'm most interested in. Does the outlook look good for the field? I would think that with much of the country more than open for energy alternatives, this field would be one with a bright future, but I don't hear much about fusion research in mainstream.

You hear from me first. I claim, “We can apply very high voltage on deuterium to achieve fusion power generation.” Using a device like a van De Graaff or Tesla Coils machine, we can generate very high voltage with minimum power input on a deuterium gas mixture which surrounds a pullet. The...

How many times longer does a 0.50 Msolar star fuse hydrogen at it’s core than dose a 1.5 Msolar star? i just need the equation and i can figure it out. i can't find anything on google thank you

Is 40,000 joules of energy enough for Nuclear fusion?

Hey, I was wondering if somebody out there might be able to help with my problem, by posting a suitable web-link if they happen to know one. I need to know the differences between Fusion and Fission. I understand that fusion is when atoms of a light element are combined to an atom of a heavier...

I just need a little help in interpreting a question. Question Identify the terms in the above two expression and give their physical significance What do you think they mean by physical significance? These are the two expressions by the way. \epsilon = n_a n_x \frac{< \sigma V >} {\rho} <...

Quick question. Are physicists and engineers who work on designing fusion reactors generally well versed in both inertial confinement fusion and magnetic confinement fusion, or are they two separate subfields altogether.

I have managed to find out that waste products from fusion reactions are far less dangerous than those from traditional fission reactions but i cannot find anywhere that states what the waste products actually are. Can somone please tell me what the waste products from a deuterium and a tritium...

Hey, From a Philosophy of Science angle, I'm trying to argue why concepts (say, scientific hypotheses) survive even when they don't seem to be succesful. I thought a great example would be fusion.:biggrin: Now, I'm not that big on particle physics (I've a Bachelor in Engineering Physics...

If I'm correct nuclear fusion rockets, (if used the right way), can go up to 10% the speed of light. THis is while nuclear fission goes 5% the speed of light. Yet NASA is working on craft that can make a "Earth-Mars-one way in two months". This is better then our current six month. Yet if I'm...

I wonder if someone could help me out. I'm a bit confused about how fusion (and fission for that matter) releases energy. Looking at a graph of binding energy per nucleon against mass number, fusion gives out energy up to iron (correct?). The thing that confuses me is that as two nuclei are...

just curious.

By comparing hot, cold and soundfusion (sonofusion) power which one yields more energy and more favourable for future power generation? well as far as i know sonoluminscence are generated from collapse of bubble when excited by ultrasonic sound wave, thus light are emmited from it, and it is...

1.with the hot and cold fusion under experiment level now, would power from sound fusion provides equal or more power and economic value if it has been successfully researched? 2. what is the difficulty faced in building a commercial sound fusion generator? 3. Future of sound fusion...

If you miss the news report in the March 9th issue of Nature, you may want to read it. And... Zz.

I need to know the applications of nuclear fusion, Is there anybody who could help?

I have a graph here separated into 5 different parts (A-B, B-C, C-D, D-E, E-F) It is a curve going upwards...I just need to know how to calculate the heat of fusion of the substance using the curve in the graph...I can use the formula and calculate the heat of fusion for each little piece...

well, i stumbled across this link: http://jlnlabs.imars.com/cfr/index.htm it seems unbelievable that something is really happening in there... then i started looking around the net to see what other people think: http://en.wikipedia.org/wiki/Cold_fusion...

Okay deuterium consists of 1 proton and 1 neutron and tritium consists of 2 protons and 1 neutron, now if one atom of each, smash together that forms an atom of Helium which consists of 2 proton and 2 neutrons, a 3rd neutron is created and released, how does the 3rd neutron come about?

[SOLVED] fusion vs. fission I was trying to describe to my buddy the difference between fusion and fission and my explanation got a jumbled up, which made me realize how I myself don't really understand the difference. My understanding is... fission - two or more particles combines...

Is it a rumor or is the government really devolping a fusion rocket. From what I've heard it's so strong it could get us to Mars in as quick as 8 ays. Not lieing 8 days. If you wondering about the acceleration and deccearation it supposedly would have 1.5 time the force of gravity. So you could...

Hello. Often high temperature data are not available. I am missing the melting heat of many coumpounds. However, rather precise binary phase diagrams are available. (my examples deal with silicates, say CaO-SiO2 for example, http://www.npl.co.uk/mtdata/demo/dgox1.html) I would like to...

I asked one of the professors in the nuclear engineering department recently how inertial fusion could be a viable energy source if so little matter was fused. He told me that I would be suprised and said that I should do the calculation myself. I found the volume of the pellet, but now I have...