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" Theoretically, if the reaction completes with perfect efficiency (a practically impossible feat), a small amount of fuel about the size of a pinhead releases the energy equivalent to a barrel of oil.", Since when is a barrel of oil a unit of energy? This is just bad on so many levels, please reword. -- PoorLeno 19:02, 12 January 2006 (UTC)
"If this is to be typical of the development of such systems, it is unlikely they will ever be a practical power source." - this comment sticks out in an otherwise excellent article as a piece of irrelevant opinion and should be deleted - Discuss! - Rich 00:37, 24 December 2005 (UTC)
I thought flibe was LiF and BeF2 rather than just generic salts. Does anyone know precisely? Should it be a new article, FLiBe?
I removed the section with the aforementioned title for the following reasons.
-- Deglr6328 16:54, 17 July 2006 (UTC)
Why is there no reference to the University of Rochester's Laboratory for Laser Energetics? It jas the OMEGA laser system there, where they carry out tests now, not years from now when the NIF of ITER will be finished/started.
The article seems a bit inconsistent as to what constitutes ICF. The introduction defines ICF as involving lasers or heavy ion beams. Some of the article is written as though lasers are the only possible drivers, but there is a mention of Z-pinch and heavy ions as well. In the template an the bottom, 'Inertial confinement' has laser driven, z-pinch, and bubble fusion next to it. Does it only count as ICF if lasers or heavy ions are involved? Seems like Z-pinch driven hohlraums are very similar to laser driven hohlraums. And what about laser fast ignition of a fuel compressed by a Z-pinch? (Also, I second the idea that there should be an article on magnetised target fusion.) -- Dashpool 12:10, 18 August 2006 (UTC)
This article is entirely about lasers, while ignoring inertial electrostatic confinement (IEC) and acoustic inertial confinement (AICF). It should therefore be renamed to Laser inertial confinement fusion or similar. Actually, Laser fusion redirects here. It should be moved there. — Omegatron 15:04, 27 November 2006 (UTC)
The result of the proposal was not to move the article. — Josiah Rowe ( talk • contribs) 01:27, 13 January 2007 (UTC)
Inertial confinement fusion → Inertial confinement fusion (beams) — No one wants to move the page because "inertial confinement fusion" is the term usually used for lasers or ion beams. But there are actually several other types of fusion that are also "inertial confinement fusion", including z-pinch, acoustic inertial confinement, inertial electrostatic confinement, and so on. I'm not a physicist, but I think Inertial confinement fusion should be a summary of all the various types and general concepts, and this article should be moved to a more descriptive title. — Omegatron 21:33, 5 January 2007 (UTC) — Omegatron 21:33, 5 January 2007 (UTC)
Although I'm hardly a fan of ratings, it seems a lot of people think they are important. So can anyone suggest a reason this isn't A or FA? It certainly meets every one of the criterion for the A rating, it's clear, well written and organized, has a great intro, is reasonable length given the topic, and well supported by "hard" sources. So how do we move this process along? Maury 14:04, 15 April 2007 (UTC)
Can anyone qualified please add a section on the use of hybrid Fusion-Fission fuel pellets which rely on the excess of neutrons produced by the fusion process in the instantaneous conversion and fission of a depleted Uranium shell? I have been hearing about this process, but I can't find any mention of it in this article or other articles which I have cross-referenced. This should be the most appropriate article, since inertial confinement and fusion is key to the process. The use of Uranium is a short cut to getting a net positive power output. I realize that there may be some negative feelings, since the Holy Grail of fusion is the clean (radioactive by-product-free) generation of power. On the bright side, at least the tiny size (and non-sustaining chain reaction) means that it has limited accident potential. —Preceding unsigned comment added by Pmarshal ( talk • contribs) 00:26, 18 November 2008 (UTC)
IMHO, it is biased to refer to the NIF page and not to the LMJ one: http://en.wikipedia.org/wiki/LMJ I'll try to amend the article in that sense as soon as I find some time, unless somebody does it first :D —Preceding unsigned comment added by MarmotteNZ ( talk • contribs) 03:21, 4 August 2009 (UTC)
The description states 'sometimes called a microballon'. I believe this should read 'microballoon'. I would have just corrected it if i was certain, so can anyone confirm? Cameron McCormack ( talk) 11:41, 13 October 2009 (UTC)
The article's name is still too large for its subject. ICF should be a summary that points to more specific articles. Laser is a subset of beam which is a subset of inertial. Why is this hard to understand? Lfstevens ( talk) 08:21, 8 April 2012 (UTC)
The article says "The first credible attempts at ignition are scheduled for 2010" with nothing more current. On the one hand Nature reported this March that laser energy was up to 2.03 megajoules (reduced to 1.875 by diagnostic and other optics). On the other the program ends this year. It's now June. What are the current odds of (a) ignition by 2012 and (b) continuation beyond 2012?
It would be very sad to see all those billions down the drain for an approach to fusion that looks looked to stand a much better chance than magnetic confinement. --
Vaughan Pratt (
talk)
05:33, 9 June 2012 (UTC)
An unsupported statement is made that "... the smaller a thermonuclear bomb is, the "dirtier" it is ..." This is misleading, if not untrue.
Bombs are optimised for an entirely different purpose. It is true that in small and large bombs, the bulk of the yield is from fission, but this is a design decision, and can easily be eliminated by using a non-fissile tamper material. The secondary of a small multi-stage bomb is just another boosted fission stage, fusion yield negligible. The largest bomb ever tested (~50MT) was fairly clean, but only because the fissile tamper was removed from the secondary to reduce contamination. Small ultra-clean bombs have also been tested.
The article is about the current art of laser-driven ICF. Fission-driven ICF was the first mechanism used and has been proven, so a summary definitely belongs here. The details of using large explosions for power belong in another more general nuclear power article.
Thomasonline ( talk) 06:47, 12 September 2014 (UTC)
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The article says "The implosion process must be extremely uniform ... For a beam energy of 1 mJ, the fuel capsule cannot be larger than about 2 mm ..." Is this correct? Beam energy of 1 mJ? Did the author mean 1 MJ? Discostu5 ( talk) 04:56, 8 May 2023 (UTC)
The section says, "These X-rays are absorbed by a special material surrounding the secondary stage, which consists mostly of the fusion fuel. The X-rays heat this material and cause it to explode." I read the "special material" to be the polystyrene that's typically used in the radiation channel. If this is a correct interpretation; this becomes a plasma and is transparent to X-rays meaning that the secondary is directly compressed by X-ray pressure not by explosion of the "special material". Certainly the cited source seems to indicate this: "As the radiation channel approaches this temperature the foam will become completely ionized and nearly transparent to thermal radiation" Am I incorrect? NBeddoe ( talk) 12:02, 25 July 2023 (UTC)
Why are there two sections on fast ignition? They both seem to be poorly sourced as well. Guthrette ( talk) 17:47, 20 November 2023 (UTC)
![]() | This ![]() It is of interest to the following WikiProjects: | |||||||||||||||||||||||
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" Theoretically, if the reaction completes with perfect efficiency (a practically impossible feat), a small amount of fuel about the size of a pinhead releases the energy equivalent to a barrel of oil.", Since when is a barrel of oil a unit of energy? This is just bad on so many levels, please reword. -- PoorLeno 19:02, 12 January 2006 (UTC)
"If this is to be typical of the development of such systems, it is unlikely they will ever be a practical power source." - this comment sticks out in an otherwise excellent article as a piece of irrelevant opinion and should be deleted - Discuss! - Rich 00:37, 24 December 2005 (UTC)
I thought flibe was LiF and BeF2 rather than just generic salts. Does anyone know precisely? Should it be a new article, FLiBe?
I removed the section with the aforementioned title for the following reasons.
-- Deglr6328 16:54, 17 July 2006 (UTC)
Why is there no reference to the University of Rochester's Laboratory for Laser Energetics? It jas the OMEGA laser system there, where they carry out tests now, not years from now when the NIF of ITER will be finished/started.
The article seems a bit inconsistent as to what constitutes ICF. The introduction defines ICF as involving lasers or heavy ion beams. Some of the article is written as though lasers are the only possible drivers, but there is a mention of Z-pinch and heavy ions as well. In the template an the bottom, 'Inertial confinement' has laser driven, z-pinch, and bubble fusion next to it. Does it only count as ICF if lasers or heavy ions are involved? Seems like Z-pinch driven hohlraums are very similar to laser driven hohlraums. And what about laser fast ignition of a fuel compressed by a Z-pinch? (Also, I second the idea that there should be an article on magnetised target fusion.) -- Dashpool 12:10, 18 August 2006 (UTC)
This article is entirely about lasers, while ignoring inertial electrostatic confinement (IEC) and acoustic inertial confinement (AICF). It should therefore be renamed to Laser inertial confinement fusion or similar. Actually, Laser fusion redirects here. It should be moved there. — Omegatron 15:04, 27 November 2006 (UTC)
The result of the proposal was not to move the article. — Josiah Rowe ( talk • contribs) 01:27, 13 January 2007 (UTC)
Inertial confinement fusion → Inertial confinement fusion (beams) — No one wants to move the page because "inertial confinement fusion" is the term usually used for lasers or ion beams. But there are actually several other types of fusion that are also "inertial confinement fusion", including z-pinch, acoustic inertial confinement, inertial electrostatic confinement, and so on. I'm not a physicist, but I think Inertial confinement fusion should be a summary of all the various types and general concepts, and this article should be moved to a more descriptive title. — Omegatron 21:33, 5 January 2007 (UTC) — Omegatron 21:33, 5 January 2007 (UTC)
Although I'm hardly a fan of ratings, it seems a lot of people think they are important. So can anyone suggest a reason this isn't A or FA? It certainly meets every one of the criterion for the A rating, it's clear, well written and organized, has a great intro, is reasonable length given the topic, and well supported by "hard" sources. So how do we move this process along? Maury 14:04, 15 April 2007 (UTC)
Can anyone qualified please add a section on the use of hybrid Fusion-Fission fuel pellets which rely on the excess of neutrons produced by the fusion process in the instantaneous conversion and fission of a depleted Uranium shell? I have been hearing about this process, but I can't find any mention of it in this article or other articles which I have cross-referenced. This should be the most appropriate article, since inertial confinement and fusion is key to the process. The use of Uranium is a short cut to getting a net positive power output. I realize that there may be some negative feelings, since the Holy Grail of fusion is the clean (radioactive by-product-free) generation of power. On the bright side, at least the tiny size (and non-sustaining chain reaction) means that it has limited accident potential. —Preceding unsigned comment added by Pmarshal ( talk • contribs) 00:26, 18 November 2008 (UTC)
IMHO, it is biased to refer to the NIF page and not to the LMJ one: http://en.wikipedia.org/wiki/LMJ I'll try to amend the article in that sense as soon as I find some time, unless somebody does it first :D —Preceding unsigned comment added by MarmotteNZ ( talk • contribs) 03:21, 4 August 2009 (UTC)
The description states 'sometimes called a microballon'. I believe this should read 'microballoon'. I would have just corrected it if i was certain, so can anyone confirm? Cameron McCormack ( talk) 11:41, 13 October 2009 (UTC)
The article's name is still too large for its subject. ICF should be a summary that points to more specific articles. Laser is a subset of beam which is a subset of inertial. Why is this hard to understand? Lfstevens ( talk) 08:21, 8 April 2012 (UTC)
The article says "The first credible attempts at ignition are scheduled for 2010" with nothing more current. On the one hand Nature reported this March that laser energy was up to 2.03 megajoules (reduced to 1.875 by diagnostic and other optics). On the other the program ends this year. It's now June. What are the current odds of (a) ignition by 2012 and (b) continuation beyond 2012?
It would be very sad to see all those billions down the drain for an approach to fusion that looks looked to stand a much better chance than magnetic confinement. --
Vaughan Pratt (
talk)
05:33, 9 June 2012 (UTC)
An unsupported statement is made that "... the smaller a thermonuclear bomb is, the "dirtier" it is ..." This is misleading, if not untrue.
Bombs are optimised for an entirely different purpose. It is true that in small and large bombs, the bulk of the yield is from fission, but this is a design decision, and can easily be eliminated by using a non-fissile tamper material. The secondary of a small multi-stage bomb is just another boosted fission stage, fusion yield negligible. The largest bomb ever tested (~50MT) was fairly clean, but only because the fissile tamper was removed from the secondary to reduce contamination. Small ultra-clean bombs have also been tested.
The article is about the current art of laser-driven ICF. Fission-driven ICF was the first mechanism used and has been proven, so a summary definitely belongs here. The details of using large explosions for power belong in another more general nuclear power article.
Thomasonline ( talk) 06:47, 12 September 2014 (UTC)
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The article says "The implosion process must be extremely uniform ... For a beam energy of 1 mJ, the fuel capsule cannot be larger than about 2 mm ..." Is this correct? Beam energy of 1 mJ? Did the author mean 1 MJ? Discostu5 ( talk) 04:56, 8 May 2023 (UTC)
The section says, "These X-rays are absorbed by a special material surrounding the secondary stage, which consists mostly of the fusion fuel. The X-rays heat this material and cause it to explode." I read the "special material" to be the polystyrene that's typically used in the radiation channel. If this is a correct interpretation; this becomes a plasma and is transparent to X-rays meaning that the secondary is directly compressed by X-ray pressure not by explosion of the "special material". Certainly the cited source seems to indicate this: "As the radiation channel approaches this temperature the foam will become completely ionized and nearly transparent to thermal radiation" Am I incorrect? NBeddoe ( talk) 12:02, 25 July 2023 (UTC)
Why are there two sections on fast ignition? They both seem to be poorly sourced as well. Guthrette ( talk) 17:47, 20 November 2023 (UTC)