[HN Gopher] Born secret - the heavy burden of bomb physics ___________________________________________________________________ Born secret - the heavy burden of bomb physics Author : pseudolus Score : 54 points Date : 2021-04-19 20:06 UTC (2 hours ago) (HTM) web link (www.nature.com) (TXT) w3m dump (www.nature.com) | Gauge_Irrahphe wrote: | Is this the reason why the obviously wrong calculation that | fusion ends with iron is hammered into everyone? | XorNot wrote: | Why is it obviously wrong? | gct wrote: | You can fuse above iron but you spend energy to do it instead | of releasing energy I guess? | adrian_b wrote: | I do not know what the other poster had in mind. | | While fusion does not end at iron 56 (whose nucleus has the | lowest mass per nucleon), the quantities of heavier nuclei | produced by fusion decrease very steeply with increasing | atomic mass, becoming low beyond the isotopes of nickel, very | low beyond the isotopes of zinc and negligible beyond the | isotopes of germanium. | | The elements heavier than zinc are produced mostly or | completely by other kinds of reactions, e.g. neutron capture. | petermcneeley wrote: | Note this is not about https://en.wikipedia.org/wiki/Max_Born | 8bitsrule wrote: | Article left this one out: | | https://en.wikipedia.org/wiki/The_Progressive#United_States_.... | DoctorOetker wrote: | a more direct link: | | https://progressive.org/magazine/november-1979-issue/ ___________________________________________________________________ (page generated 2021-04-19 23:00 UTC)