Fusion Definition and 849 Threads

Does latent heat of fusion typically go up or down with temperature? I'm trying to calculate the amount of pressure needed to move the melting point of Thorium Dioxide up by 444 degrees kelvin using the Clausius-Clapeyron Law to see whether it would be feasible to line the combustion chamber of...

Hi, I came across Muon Catalyzed Fusion while on my physics-researching rampage. How does \mucf take place? Is it that the muon that replaces the electron draws in other nuclei? Does it have anything to do with electronegativity? Thanks,

If an election can tunnel through atomic structures, or move through atomic barriers even when they don't have enough energy, could it be possible to create fusion through tunneling, even without sufficient energy, sufficient relative to standard energy levels needed? I am thinking that it...

Hi an idea came in mind.Before I go further I want to say that I understand that this is just a theoretical philosophy and that in real life there are radiation losses and particle loses and all kinds of other losses. Ok so here's the question.Why can't fusion plasma be heated like a cup of...

Also how is it different (if at all) from promoter fusion?

can a machine like big bang machine be used for controlled nuclear fusion economically for prodution of electricity?

Homework Statement We completed a lab with the following information Substance Mass(g) Starting temperature (°C) Final Temperature (°C) Ice cube 15.55 0 12 Water 151.25 21 12 Now...

is nuclear physics or plasma physics a better grad concentration for current/future fusion research? thx

I need a detailed explanation as to how nuclear fusion works. How it produces energy and why? Be very specific as I have a general understanding.

In the case of nuclear fission, when U-235 splits into Ba,Kr and three neutrons , then it is shown that the total mass of the products on the right side of the equation is slightly less than that of the reactants on the left side. So this missing mass-the mass defect – is converted into energy...

Human chromosome #2 is the result of the fusion of two ancestral chromosomes. I know humans now have one less chromosome pair when compared to an ancestral population from a while ago, that the fusion didn't happen at once from certain parents to sons. So what steps happened to arrive from 24...

As much as i have read and understood antimatter can be created artificially when colliding elementary particles at high energy , like two protons in a particle accelerator. Could antimatter be created in a plasma in a nuclear fusion reactor if the plasma temperature /pressure would be high...

Hi, this is my second year studying physics and few weeks ago we went into nuclear physics very briefly because we are learning it next year. I'm not sure if the energy required to fission is equal to the energy required to fusion. For example is energy required to fission hydrogen atom...

Hello, I'm trying to figure out how to calculate how much energy is being released in a nuclear fusion reaction from x rays. I think it will have to do with how much deuterium is in the vacuum chamber, how many volts I am using and the amount of resistance of the mesh the electricity is...

Has anybody thought of it before? I mean even if it were energetically expensive to harness it it might actually create more than it takes since the energy source is raining down from the heavens anyway. Such a power plant would have to be placed at a high altitude though because most cosmic...

I've often been fascinated by the tantalising nature of muon-catalysed fusion, and have recently been pondering it in the context of supersymmetry. As a Chemist first and foremost, the nearly-chemical nature of the muon-catalysed fusion process really draws my attention. To my understanding...

Hey guys, I'm getting a bit confused about nuclear fusion. I understand the basics of binding energy being the energy required to split the nucleons apart etc. and the fact that in nuclear fusion you are combining two particles e.g. (2 deuterium nuclei) with a lowish binding energy to form a...

I wanted to ask the community about something I ran into the other day and I know nothing about physics. I can help you build and hack your network, but stuff like this? Forget it. Other then posting this guy's website, I don't know how to explain it, beyond what he has designed, and his...

I've been reading about the more or less discarded study of LEFR (Low-Energy Fusion Reactions) and I've read that the only repeatable LEFR process has been Muon-Catalyzed Fusion -- whereas the muon replaces an electron in a deuterium atom and overcomes Coloumb's barrier by attracting itself...

Would it be possible to produce a fusion reaction(fusing deterium atoms) using x rays instead of high voltages? Scientist are trying to create fusion using laser, which is just focused photons, but if you have energetic photons such as x rays, which would knock the electron of the deterium atom...

I am presently working with data fusion of redundant sensor data, basically trying to put together data from an IMU, a gyro and odometry... My question is whether the accuracy of the final state be greater than the accuracy of the most accurate sensor used in the ekf? Thanks in advance for...

Fusion?? (latent heat of fusion) What is fusion? What I know that is fusion is the process of joining of nuclei by melting.Thus , fusion is a melting process. Can i get some more information in easy language. I have read some-were "fusion is a freezing process" is this statement is true by...

Homework Statement Calculate the amount of fission energy, in joules, that can be generated from 2kg of uranium fuel, if the U-235 represents 0.7% of the metal, and every fission reaction produces 200MeV. Homework Equations The Attempt at a Solution My attempt is irrelevant before...

So I have recently been reading up on fusion with Hydrogen atoms. I understand most of it except one essential part, thus bringing me to my question: Can one smash two Hydrogen atoms at extremely high speeds in say room temperature and still get a Deuterium atom?

When does helium fusion occur in an evolution of star? Well, i just need help in this confusing part of a star's life. First of all, when the sun finishes the H-fuel at core, why doesn't it immediatly use the H-fuel on the surface.. And then another doubt is, what causes the expansion of the...

The most difficult aspect of hydrogen fusion is overcoming the electrostatic forces that cause the hydrogen nuclei to repel each other. Would it be possible to place one of the nuclei inside some conducting sphere like a Buckminsterfullerene so that the fullerene acts as a Faraday cage? The...

Hi, has it really been proven that the process of fusion is REALLY enough to keep stars from imploding under their own gravitational force? I suspect that there might possibly be another factor involved, in keeping the stars inflated until they start to cool and hit that point of...

I'm not as smart as many of you, nor is this something I've looked into deeply. I say that not only to excuse my stupidity, but also to appear modest and hopefully likeable/helpable. And I say that (as well as this) not only to appear honest, but also to begin with a little humor. I've...

I've been playing in the lab with distilled water and noticed that the smaller water drops are, the longer I could over cool them. In fact, even with 20 ml of distilled water, I couldn't get it to freeze when it passed by 0.0°C. Instead it would go around -3.5°C, then freeze almost instantly and...

Is there any other elements that can be used for fusion?

Hallo everyone! I'd like to understand why is it that the sun can produce fusion energy with less heat then the required heat in our current reactors? Fusion reactors produce 100M/Degrees to produce a few minutes of fusion where the sun uses only 10M degrees and still produces fusion? Why...

Hello people, I couldn't find a direct answer anywhere. Can nuclear fusion create any radioactive substances. Please answer this is detail. Thanks.

Interesting. According to the following link: http://www.sciencedaily.com/releases/2012/04/120423143128.htm What do you all make of this?

Homework Statement Find the reaction rate of a star purely of Hydrogen at temperature of 15MK, density of 150gm/cm^3, most of the reactions take place at R0=0.25R. Each reaction released energy of 25MeV Homework Equations This is the part I'm lacking. I've got the number of protons...

I've just watched the Extreme Stars program in How the Universe Works and it states that when a massive star starts to make iron, the fusion is quenched and the core collapses. From the program, it sounds like the process is fast and will happen when a few grams of iron is formed. I find this...

Just curious, I am new to learning about nuclear science and would like to know some differences between Fission and Fusion. Thanks in advance! -Posh

The President’s 2013 budget proposal has called for reduced funding of fusion energy programs. At the same time, an increasing portion of the fusion budget is allocated toward ITER, which is a large reactor being built in France, a collaborative effort between many countries. Funds for remaining...

Is it possible to use neutral beam accelerators to smash deuterium atoms at each other to achieve practical fusion?

Does anyone happen to know any undergrad research programs in the U.S. that deal with cold fusion and related experiments?

Why isn't it breaking even? Is it just too much energy is needed to cause it? Or it needs to be a continuous reaction? Why can't we just heat up multiple hydrogen atoms enough to cause multiple fusion reactions? And is it possible to use a molecule, say carbon dioxide, and induce fusion? And...

If the melting point depends on the pressure, does the latent heat of fusion also depend on the pressure? The equation relating the entropy of fusion to the enthalpy of fusion is given by: \Delta H=T\Delta S where T is, apparently, the temperature of melting. So, if the melting point...

I am not a student, unfortunately, just a curious layperson who gets random, weird questions sometimes, so my apologies if this is a basic question generally covered in astrophysics for dummies, but ... here goes ... Nuclear fusion is the process of atoms combining to form heavier elements...

Okay. I'm doing a science fair project on we're kiling the Earth and that changing simple everyday things could help save our dying planet. My experiment is going to be cold fusion vs fossil fuels and to perform that experiment I need to build a simple cold fusion reactor. Anybody got any ideas...

without having to rely on quantum channeling

If you need to put more energy into making a bigger nucleus, shouldn't bigger nuclei have more energy that can be released? How does putting energy into making hydrogen into helium even release that much more energy?

I am currently reading E=Mc^2 and have a quick question regarding some of the nuclear fusion they describe that takes place in stars: When proton fusion occurs, one of the protons decays into a neutron + positron + neutrino – due to the weak interaction. And the proton and neutron , acted...

Does all it require to create fusion energy is to heat something up to 8000 C? Is that in principle all that it requires? Does it require any other fundamental tricks?

If a stable He 3 particle [PNP] hits a stable Be 9 isotope, would not three stable alpha (He-4) be the most commonly predicted byproducts of this fusion reaction, resulting with two alpha with high energy, the third with lower energy ? If not, what more common byproducts are predicted from...

Homework Statement http://pds24.egloos.com/pds/201201/22/94/f0095594_4f1af1d126bf3.png [Fusion cycle of the SUN] Show that in the fusion cycle, the energy released is about 30 MeV. Homework Equations The Attempt at a Solution Can you do this without any relevant information!? If you have the...

Why is the latent heat of vaporisation greater than that of fusion(melting)? I mean in liquid state,atoms are already far apart, so it must require less energy to make them gas(far apart) as forces(electric in nature) between molecules decrease with distance.