The measured fission lifetime with Crystal Blocking technique and K X-ray measurement resulted in 10-18 sec. But the fission dynamics theory suggests it would be 10-21 sec. To incorporate this large change in lifetime one needs to consider a large damping which would result in uniform angular distribution of fission fragments, but experimental results on quasifission show forward focussing of fission fragments.
Maybe a silly quuestion, but: Is it sure that your measured fission lifetime is only an upper limit? That would explain the results.
E.Strub
I understand what you are asking that there might be some distribution of fission timescale... But, it is not so.. It has got much deeper implication on the dynamics involved in that time scale... Fission timescale as mentioned by Bohr Wheeler is 10-21 sec which is not verified experimentally, measurements shows only 10-18 sec only, so it raises the question what is happening for 10^3 sec, why it got delayed?
The question is why at all we get 10-18 sec timescale...Do we understand the reason.
It is a much argued topic for decades and it is still not understandable......People bring in viscosity and argue that viscosity increases with temperature which seem quite irrelevant...It require a much better explanation...
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