Nuclear fusion Definition and 201 Threads

This excerpt is from "The Universe and the Atom" by Don Lichtenburg: I was under the impression that photons made in the nuclear fusion bounced off of particles for a long time, before they inexplicably were able to escape from the sun. Why does the sun absorb the most energetic photons...

- possible sun timeline - 3,130,000 years for molecular gas to condense into protostar - 40,000,000 for core to condense and heat up to 15 million K - 43,130,000 total - sun has only enough matter to 'burn' by gravitational pressure for 100/300 million yrs - first stage of...

Nuclear power plant which use of fission process have been made but why not fusion power plants, what affect its feasibility ??

If we tried to make elements higher than Helium in a terrestrial fusion reactor, what elements could we realistically make? If I've understood it correctly the triple alpha process reaction rates would be irrelevant due to the considerably lower pressure * time product. But how would Be...

Hey guys. I've recently developed an intense interest in nuclear fusion, and I was wondering what sort of majors would be relevant/helpful to a facility conducting research in that area (like ITER in France). I'm a freshman at Johns Hopkins U, and unfortunately there isn't a major in Nuclear...

My latest thoughts about the life, universe and everything has brought me to this scenario: [in a stars core, but a perfect thought situation, for the sake of illustration] there is a proton, electron and proton on one line in this particular sequence. I think, that the electron, witch has...

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

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.

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...

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...

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...

Hi All First post, so: Hi :smile: I'm in the final year of a MPhys Physics degree at St Andrews Uni, and I expect to do pretty well. I've been thinking about going in for the nuclear industy beacuse I'm a bit of an idealist, and I really think nuclear power will help the UK. The problem is...

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...

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

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

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...

I have a question , hoq much pressure s needed for atoms to start to fuse(hydrogen atoms i guess) let's say we use the same tritium and deuterium and we put them in an environment with pressure how much pressure would it need? could you please say the pressure like in G like in gravitational...

What are the major differences in the fields of study and work done? I know that generally the vast majority of work done on fusion is by physicists but I also know there are several good nuclear engineering graduate programs which have an option to focus on fusion.

Hello there physicists! I am here to ask a few straightforward questions regarding nuclear fusion accomplished here on Earth. Question 1: How does a magnetic field contain the heat produced by nuclear fusion in the reactor? If we look at the example of Deuterium fusing with Tritium, a high...

((Not certain this is the right place)) Hi guys, Currently I'm voluntarily undertaking a project qualification and have decided to write a report on Nuclear Physics and how it could be used as an energy source in the future. I already know quite a bit about this topic but was wondering if...

Homework Statement This is the question: 2H1 + 3H1 ==> 4He2 + 1n0 +Q Where Q = 17.7 MeV The binding energy per nucleon are given below: 2H1 = 1.12 MeV 1n0 = Null 4He2 = 7.07 MeV " Determine the binding energy per nucleon, in MeV, of tritium...

Could we create Nuclear fusion ?? Could we archive nuclear fusion in a tokamak like a H bomb ?? If we get urani/ plotoni meltdown , it ll create - Enegry to heat up - Enough neutron to reach the Lawson criterion - Enough neutron to reduce EMF between nuclears , so it get easier to...

Hello, I am a junior in high school, and for the past few years nuclear physics has caught my attention. Mainly Nuclear Fusion. I have done some reading on the subject and I have looked around but I am having some difficulties finding what exactly I should start with studying first. Nuclear...

I am inquiring as to what the theorem function is for the mean product of cross section and velocity for stellar fusion reactions? \langle \sigma v \rangle Mean product of nuclear fusion cross section and velocity. \langle \sigma v \rangle Maxwell–Boltzmann probability density function: f(v)...

Hello, I am doing a small research investigation into whether Nuclear Fusion will provide a safer and as efficient energy source as current Fission technology. Just interested if anybody has opinions on the topic and what their stance is on Nuclear Fusion, do they think it can work, any...

essentailly cyclotrons are used to smash one atom into another. can it be done to fuse atoms? oh and i read that cyclotrons are used to treat canncer. they shoot ionizing particles at the cancer while, avoiding non cancer tissue. if anyone knows the best way to cure cancer in terms of...

Hello, I was just wondering if anybody could give me any ideas about a possible direction in a Physics issues investigation. I am looking at choosing one around nuclear energy and the issues of radiation. Any help or interesting sugestions of avenues in nuclear physics, and or possibe guiding...

? Nuclear Fusion Homework Statement Two deuterium nuclei overcome the Coulomb force of repulsion and attain the necessary 1 × 10−14 m distance for fusion. What is the minimum initial velocity of each nuclei, as measured in the center-of- mass frame? The permittivity of free space is 8.85419 ×...

Most research on nuclear fusion obviously is done in materials for containing and generating the plasma and this is not the speciality of a nuclear physicist. Is there actually anything for nuclear physicists to do for research other than figuring out a totally new path for achieving fusion?

Hello,I've been wondering if any of you can suggest an internet source that explains nuclear fusion in a not too complicated way.My problem was,that I need it to make a presentation in physics class,but the simple ways it explains it,it says things like ''protons and neutrons are clumped...

I am interested in doing research in controlled nuclear fusion , i am doing my electrical engineering 4th year in India. Since no college in my country offers post graduation in fusion related fields , i have decided to do M.Tech in Nuclear science and technology in Indian Institute of Technolgy...

What do you guys think about this? [crackpot link deleted] Personally I think this should be researched with utmost effort of the science community. Had to do research on this. I am not a nuclear physicist but i have some knowledge of electrochemistry and nuclear chemistry. Peer reviewed...

I had a question after having read an article in an old Popular Science magazine I found at a children's Hospital. These two guys apparently are building a nuclear fusion generator that's going to excite hydrogen plasma inside of a magnetic "sphere", and then they're going to use magnetic...

Let me first say that the answer to this question is not going to determine my career path; it is just to satisfy my curiosity. I am interested in the research and development nuclear fusion and would like to know how much people in this field make. I have scoured the internet and cannot find...

If you combined these elements does it decrease the nuclear fusion reaction because of the fission or do i have this all mixed up??

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...

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

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...

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...

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

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?

http://news.bbc.co.uk/2/hi/science/nature/4629239.stm What is all this nonsense about what 'we' are going to do about new energy sources? What is the most that 'we' are ever going to do--vote for a new 'Energy Czar' to head-up our worldwide Centrally Planned Economy, and then sit back while...

I was reading aboot sono-luminescence, and the researcher from llnl, that thought that he had (mistakenly) produced nuclear fusion. With all of the info available that I could find aboot sono-luminescence...it all seems to come down to 'how fascinating, but we don't much aboot it'. With that in...

Would common sense dictate that along with providing energy, that each fusion reactor would double as a Helium balloon factory, or would I have to take it upon myself to lobby for the creation of such a facility when the time comes? I would assume that any scientist worth his weight in salt...

http://news.yahoo.com/news?tmpl=story&ncid=753&e=1&u=/ap/20050427/ap_on_sc/tabletop_fusion The article says that the results of this experiment will be published in Thursday's edition of Nature. I'm sure many of you have subscriptions. Would anybody care to recap?

Some principal nuclear fusion reactions which have been considered are: 1) D + T -> n + 4He 2) D + 3He -> H + 4He 3) D + D -> H + T / 3He + n 4) T + T -> 4He + 2n 5) T + 3He -> (various products) 6) H + 11B -> 3 (4He) from G. H. Miley, H. Towner and N. Ivich, U. of...

Could anyone give me a few examples of endothermic fusion reactions between elements solid at room temperature?

could anyone explian how do we get energy from the nuclear fusion and fission thx isnt that fission requires bindling energy which use up energy

I'm a noob in this lol, but a thought just cross my mind. If in nuclear fusion, we require high temperature to overcome the EM repulsion of nuclei, is it possible to bypass this and simply make use of the nuclear force, or color interaction which holds the nucleus together. Is it possible to...