Fusion Definition and 849 Threads

I have been reading a lot about Z-pinch fusion recently, and i am still not entirely sure what it is. Is it a completely new type of fusion? is it in any way comparable to the fusion that is thought to be happeneing in the sun? or are they completely different processes? The Z machine has...

Hi: Neutron-neutron fusion is an example of nuclear fusion because neutrons are nucleons. Is it possible to solve the energy crisis using neutron-neutron fusion? Can this fusion be used to generated sufficient amounts of power? One advantage to neutron-neutron fusion over H-H fusion is that...

Hi this is my first post and I'm stumped on my last HW problem, so I'm open to suggestions or solutions. 1. A jar of tea is placed in sunlight until it reaches an equilibrium temperature of 35°C. In an attempt to cool the liquid, which has a mass of 220 g, 112 g of ice at 0.0°C is added. At...

Hi, I'm a first year nuclear engineering major at Georgia Tech and I've been interested in fusion power since about my freshman year of high school. I'm wondering what sort of places and positions that people who doing nuclear fusion research are at, and what sort of education it requires...

I have a general interest in fusion energy and I'm currently looking at the 'fusion energy gain factor' (Q) of fusion reactors (the energy produced divided by the energy used to induce ignition). I'm aware that the JET recorded a Q factor of 0.7 in 1997, the ITER is anticipated to have a Q...

URGENT HELP! Melting Iceberg: Latent heat of fusion Homework Statement Icebergs in the North Atlantic present hazards to shipping, causing the length of shipping routes to increase by about 30 percent during the iceberg season. Attempts to destroy icebergs include planting explosives...

does the fusion reaction in sun produce neutrons or neutrinos? i read websites of which one is saying neutron is produced but the other one says neutrino is produced..which one is correct..what other things would be produced when hydrogen fuses to produce helium in the core of sun?

A student takes 0.45kg of ice. The ice is initally at -23'C. She heats the sample in an oven until the temp is 134'C. a). What is the NRG needed to heat the ice to its melting point? b). What is the NRG needed to change the solid ice into liquid water? c). What is the NRG needed to heat the...

That last thread on Fusion was interesting. Now I have a question for the experts: How long would it take to solve and commercialize fusion power problems given an all out crash program? And how much money would that represent? What would be the risk factor of out right failure? Thanks!

You got temperature and/or pressure, and one simple atom to play with. What's the big deal?

Homework Statement In a fusion reaction, the nuclei of two atoms join to form a single atom of a different element. In such a reaction, a fraction of the rest energy of the original atoms is converted to kinetic energy of the reaction products. A fusion reaction that occurs in the Sun...

Homework Statement need to work out the Specific Latent Heat of Fusion i did the experiment and here are the results Results: Mass of calorimeter Mcal 116.87g Mass of H2O MH2O = [Mcal + H2O] - Mcal 80.82g (197.69g) Mass of Ice Mice = [Mcal + Mice + H2O] - MH2O 12.58g (210.27g) Room...

How do 4 Hydrogen atoms combine to form 1 Helium atom? What I'm looking for is the sub-atomic process. So, here come 4 Hydrogen atoms racing towards each other and they are at such a high speed and temperature that something different happens. Something different than if they were going...

It never occurred to me until now why instead of using two charged protons to fuse together, rather fuse neutrons to a hydrogen nucleus. Yes, it seems like cheating the system and therefore that's why I've not heard about this before, but what is the exact mechanism that prevents this from...

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 The first step in nuclear fusion on the sun involves the collison of two protons, which form a deutron. Consider two protons far apart on a collison course with equal but opposite velocity. Their average kinetic energy is given by K = 1/2mv^2 = 3/2KbT where Kb is...

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...