February 04, 2016
Business Insider is reporting that the claim by the North Koreans that they conducted an H-Bomb test may indeed be something more than a crate of commie kimchee. For one thing, recent analysis of the seismological data indicates that the detonation was actually much deeper than was initially supposed (more than twice the depth of the previous tests). There seem to be other indicators as well, that this was a test related to specific components used in an H-bomb, though officials are a tad coy about specifics, about how they have come to this conclusion or what components they might be. One interesting fact is that air samples aren't detecting any radioactives, which could mean that the DPRK is getting better at preventing any venting. (I suppose it is also possible that they popped of between 7 and 10 thousand tons of TNT; that's not without precedence but there doesn't seem to be any reason to do that as they clearly do have atomic weapons). There is more on this test here and here. American tests that tested H-bomb components prior to the first official H-bomb (Ivy-Mike) included Greenhouse-George. That test (and not Ivy-Mike) was was actually the first thermonuclear burn, though its fusion yield was far less that its fission yield. It was a proof of concept test and could well be what is being implied for the North Korean test. Something along those lines would make North Korean claims about the test substantively true.
As Alex Wellerstein, a nuclear historian at the Steven Institute of Technology and creator of Nuke Map, told Business Insider on January 6, a country that's mastered thermonuclear-weapons design suddenly has a number of possible options open to it.For instance, a country with a thermonuclear capability could build "a very thin-cased bomb of low yield [in this case 1 to 10 kilotons, or 1,000 to 10,000 tons of TNT] that would emit a lot of radiation relative to its blast power."
Posted by: The Brickmuppet at
06:02 PM
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