🚀 go-pugleaf

In article <9207251756.AA07822@Ra.MsState.Edu> rsf1@RA.MSSTATE.EDU (Robert S. Fritzius) writes:
>
>In article <1992Jul22.150401.15820@news.endg.convex.com> Steve Warren
>writes:
> 
>>...When particles get zinging around near c in, say, the Bevatron
>>here at Berkeley, not only does it require more enery to accelertate
>>them, but when they smash into something (...) the energy released
>>is significantly *more* than can be accounted for by the particles
>>rest mass...

More importantly, the momentum (hence the magnetic field required to 
bend the beam) is seen to increase even though the speed does not.

>In article <1992Jul24.230350.16042@murdoch.acc.Virginia.EDU> Cameron
>Bass responds:
> 
>>>... A bigger problem, though, is explaining other things like the
>>>apparently physical time dilation experienced by things like mesons.
> 
>In nuclear fission, fast neutrons need to be slowed way down to thermal
>speeds to increase the likelihood of their entering into neutron capture
>events.  It's as though there is a minimum value of neutron dwell-time in
>close proximity to a nucleus required to enable the capture.

This is not correct.  Slow neutrons are needed only for the fission of 
specific nuclei such a U-235.  Fast neutrons are required for the 
fission of other nuclei, such as U-238.  The optimum energy is dictated 
by nuclear-structure details such as the location of resonances (states 
of target+neutron that are unbound but act as if they are -- and can 
sometimes be coupled strongly to the ground state or an isomeric state 
that leads to spontaneous fission).  These resonances have been very 
carefully mapped out and tabulated in terms of parameters and graphs. 

>Perhaps for mesons there is a velocity related dwell-time factor
>at work in their decay mechanism in addition to (or rather than) a
>time-dilation effect.

It would be rather curious to see how you would get *exactly* the 
non-linear relationship predicted by relativity and observed in 
experiment, in particular the same factor as one gets for the mass...

--
J. A. Carr                                    |  "The New Frontier of which I  
jac@gw.scri.fsu.edu                           |  speak is not a set of promises
Florida State University  B-186               |  -- it is a set of challenges."
Supercomputer Computations Research Institute |   John F. Kennedy (15 July 60)