Fusion Definition and 834 Threads

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Dear PF Forum, What is CNO Cycle? Is it Carbon Nitrogen Oxygen cycle or Carbon Neon Oxygen? Veritasium CNO cycle In this video, Derek Muller says that Carbon fuses into Neon, and Neon fuses into Oxygen. I can't imagine that Derek makes an error here. But for myself, I get a little confused...

An antiproton cannot be used to practically catalyse fusion because the annihilation cross-section between it and a reactant nuclei is greater than the fusion cross-section between the reactant nuclei [1]. Can a positron bound to the antiproton reduce the annihilation cross-section adequately to...

Stumbled across this article this morning… [link to deleted page deleted] “A Gibraltar-based company specializing in catalyzed fusion has achieved a significant breakthrough in power generation. ENG8, which has been developing a range of catalyst fusion reactors called EnergiCells, achieved a...

Technetium 99 was detected by spectroscopy in a red giant. How did it get there if it is heavier than the “iron peak”, the upper limit for fusion?

Qmelt, honorite = (m honorite)⋅(Lfusion, honorite) Qmelt, honorite = 4.51kg⋅15500J/kg = 69905J Qcool, odium = (m odium)⋅(Cliquid, odium)⋅(391.14K−331.44K) Qcool, odium = 14.69kg⋅431.1J/kgK⋅(391.14K−331.44K) Qcool, odium = 378071.6823 Qfreeze, odium = (m odium)⋅(L fusion, odium) Qfreeze, odium...

we have two different definitions for burn-up fraction related to inertial confinement fusion the fraction of the target mass that burns a fraction that is calculated on number densities how are these two related in non-equimolar case?

When looking up stellar nucleosynthesis and the various reactions that occur inside stars, I often see very straightforward reaction chains, such as this one for the Silicon burning process (isotope numbers and such left out): ##Si + He \to S## ##S + He \to Ar## ##Ar + He \to Ca## And so forth...

During the neon-burning process in stars, why do two Neon-20 atoms fuse into Oxygen-16 and Magnesium-24 instead of forming Calcium-40?

Is the dissociation energy of a muonic molecular hydrogen ion the same as an ordinary molecular hydrogen ion? Would the cross-section for dissociation be the same as an ordinary molecular hydrogen ion? I am trying to determine the fusion rate for muon-catalyzed fusion in warm dense plasma, and I...

Suppose a craft derived its energy from fusion— converting Hydrogen into Iron… If it started with a kilo of Hydrogen, how much mass of Iron would it have at the end and how much energy would be extracted?

Sorry for bad english, does anyone know where I can purchase a spherical vacuum chamber made from metal, that preferably ships internationally ?

why can not simply explode an atomic bomb inside a recint with plasma and hydrogen so the temperature and power generated will make the fusion working

A classical from the previous century in Fusion: A prog Chord Change And a little bit Metal: Share your own from those genres.

The musical style called fusion lasted only a few years in the West but caught on in Japan. I supposed that's natural for a nation whose symbol is a fusion-fueled fireball. The exponents were T Square and Cassiopeia, which are getting pretty old but still doing it. Their influence was mostly...

Is it possible to detect transuranic elements that may eventually occur during big astronomical events? I know that transuranic elements are radioactive, so we could maybe measure the radiation that is being emited, but how could we separate the radiation that comes from the transuranic elements...

https://www.theatlantic.com/science/archive/2023/01/astrophysics-fusion-experimentation-supernovas/672625

Hi, I was reading about fusion reactions recently, and it was pointed out that the problem seems to be that positively charged nuclei repel each other. If that is the problem, why don't scientists try to go with another fusion reaction? Would it be possible to have fusion if neutrons fuse...

Fusion has bigger output then input, because produce more energy than to initiate reaction. This is allways case, for example 100kg of wood burning produce much more energy then initiate fire with one match fire. Can someone explain this statement?

https://nypost.com/2022/12/12/us-set-to-announce-major-fusion-energy-breakthrough/

Hello ! I would like to consult you about this cylindrical nuclear reactor model that I have been thinking of with the idea of reducing the friction of the plasmas with the walls of the Toroidal nuclear fusion reactors that causes the plasma temperature to drop and the nuclear reactions to stop...

I want to start a serious discussion here about our future on this small planet. This thread is especially dedicated to those of you, who are enthusiastic about atomic energy and energy crisis.

There are many articles like this one https://www.science.org/content/article/fusion-power-may-run-fuel-even-gets-started Where scientists talk about the problem of obtaining tritium even if the fusion engineering itself finally crosses the "net gain" margin for electricity production. Here is...

Hydrogen as well as Deuterium are both flammable chemically, I read that both hydrogen as well as deuterium can ignite/combust upon compression even in ordinary ICE engines. Hydrogen has been investigated and used as fuel for internal combustion engines. Now in a inertial fusion approach the...

Nuclear Fusion Breakthrough Confirmed: California Team Achieved Ignition BY JESS THOMSON ON 8/12/22 AT 9:20 AM EDT https://www.newsweek.com/nuclear-fusion-energy-milestone-ignition-confirmed-california-1733238 For those of us not literate in the field, how significant is this and what are the...

As I've mentioned in a few previous threads, at the midpoint of my sci-fi story on a generation ship, I need a disaster that wipes out about a third of the (male half of) the crew. Several people have suggested things like "a virus that disproportionately affects men", but that didn't quite cut...

Me again! For a sci-fi story I'm working on, I've created a sci-fi technology called an Aneutronic Triple Alpha Fusion Reactor. It works via aneutronic fusion, in this case, fusing Deuterium with Helium 3, but it also mimics the triple alpha process found within stars to maximise fuel use...

A PF search results in some discussion of proton-boron fusion, and from those posts, it seems that cross-section issues limit the likelihood of this type of fusion device. Now, Avalanche Energy (https://www.avalanche.energy/index.html) is claiming a design that is backpack sized and capable of...

In Britannica's article on nuclear fusion, I came across the following description of the recycle of triton and neutrons: What puzzle me are why the tritons are produced from the D-T fusion reaction, given that the products are alpha particle, neutron, and energy; and how the neutrons can be...

More or less all ICF schemes seem to be similar to the first artificial fusion method (also inertial) of the secondary of the hydrogen bomb. Before I present the question let me show just another ICF approach recently done. The company is called "first light fusion", Their method is essentially...

Fusion power is mentioned a lot in Star Wars. In the Bad Batch arc of the second to last season of Clone Wars, the Separatist facility was powered by a fusion reactor. The A-wing is powered by fusion. GNK droids are walking fusion batteries and they have made fusion furnaces the size of a small...

Western musical instruments Western musical instruments images Trumpet and Saxophone. Is it possible to design and construct western musical instruments as a fusion of two or more functions and features? I mean to say Guitar, Violin, Trumpet, Saxophone, Piano etc integrated into a single...

Hello! I have finished high school quite a few years ago. I did a physics course that went over nuclear fusion and fission, and I quite enjoyed it. However, I unfortunately no longer have those textbooks (I sold them on as many people do). Now I am doing a bit of programming in the field of...

How did you find PF?: I searched google for a Physics Forum I searches Google for a Physics Forum, to enable me to pose a question to people who know more about physics than I do. I have no detailed physics knowledge, but do read a lot of science articles, so understand most of the basics. A...

Hi all, per the title I'm looking for career advice on getting into fusion. Whether that is working at a fusion company or doing research in the field. The university I graduated from was the best I could get into at the time, due to the poor grades I left there with (~2.5 GPA) from 06-08. I...

My name "crystal catalyst" because I believe that is the best way to achieve fusion. It was inspired by the Pons and Fleishman experiments. Were they actually right? I don't know. But maybe they were on the right track, as having the fusion fuel loaded inside a crystal catalyst that holds the...

Its unclear to me what exactly these tests entailed and how much today is still top secret. They involved inertial confinement fusion with x-rays from a fission explosion. never see this discussed - forgetting about political issues with fission, how feasible is a fusion reactor utilizing...

Hi Is it possible to get two neutrons to fuse together to form helium? If so, would it not make cold fusion possible?

Sorry for the clickbaity title, real science question- The part below of the Wikipedia article on Nuclear Fusion seems to imply that some miniscule number of fusion reactions might occur randomly at normal temperatures (of course no ability to turn this into an energy source) So just due to...

Hey, its that under educated guy again, I hope the mighty big brains can spare me my feelings. Anyways, I saw this toy that levitated a ball of water using nothing but sound waves. So naturally I tried to apply this to a plasma and fusion. Using a inert gas reactor, or a fusor for that matter or...

Is this a 'big deal' ? https://www.llnl.gov/news/national-ignition-facility-experiment-puts-researchers-threshold-fusion-ignition

https://phys.org/news/2021-08-major-nuclear-fusion-milestone-ignition.html Anybody know any more? Like what they did differently from earlier trials.

I thought the first step is to compute the loss of mass. ##\Delta m=m(_1^2\textrm{H})+m(_1^3\textrm{H})-m(_2^4\textrm{He})-m(_0^1\textrm{n})=2.0141018u+3.0160493u- 4.0026033u-1.0086650u=0.0188828u##. The corresponding reaction energy is ##0.0188828 \cdot 931,5MeV=17.54MeV\approx 2.81\cdot...

Hi everyone! I was wondering if it is possible for a proton (H+) to fuse with an atom of potassium (K39 or K41) to create (Ca40+ or Ca42+)? And if so what types of forces would need to be overcome to make this possible? Thanks in advance for any help and sorry if this is a stupid question!:sorry:

Homework Statement:: French Fusion Reactor Relevant Equations:: F=ma Hey anyone here working on the French Fusion reactor? Heard about it over the radio. ITER just been reading the annual reports from CERN. Kind of a fun read if you haven’t read it yet.

Assumptions: 1) Fusion reactors are easily obtainable. Every spacecraft or hover-car has one. 2) Fusion reactors are neutron sources. 3) Neutron sources are the "difficult bit" in the enrichment of uranium and plutonium. 4) Uranium and plutonium are "freely" available in asteroids or...

a) Ew = EL + Ei mwc(T2-T1) = miL + mic(T2-0) 160 x 4.2 x (30 - 20) = 20L + (20 x 4.2 x 20) L = (6720 - 1680)/20 = 252 J/g b) accounting for 3 gram of melted ice 160 x 4.2 x (30 - 20) = (20 - 3) + (20 x 4.2 x 20)...

I read in 2 books that 4 atoms of Hydrogen fuse and give 1 atom of Helium and 2 electrons, and these 2 electrons convert to light. And that the mass of the Helium is less than the mass of the 4 atoms of Hydrogen, thus that the mass lost converted to light too. But I sum up the masses of...

Heard talk about He3 on the Moon and launching a fusion rocket. Is this all just a mashup of Sci-fi ideas?

Summary:: Similar to the Kardashev Scale, create a means for forming a hierarchy of civilization based on deuterium access. I'm interested in the fusion process using deuterium, and I've noted that it remains (to this day) the greatest source of energy of any reactions. Because of this reason...