Better Link.
 
http://hyperphysics.phy-astr.gsu.edu/Hbase/doubal.html
 
"The rebound velocity of 3v for the small ball implies that its kinetic energy is nine times its incoming kinetic energy since the kinetic energy is proportional to the square of the velocity. Since the gravitational potential energy is proportional to the height and the kinetic energy is all converted to potential energy at the peak of the motion, it will rise to height 9h. "
 
The Coulomb potential barrier at d = 1.0e-15 meters for P-11B is 7.2MeV.
 
Divide that by nine and you get 800 KeV.  :-)
 
Fred
Correction:
Coulomb barrier potential Z1*Z2*kq/d.
Coulomb barrier repulsive force Z1*Z2*kq^2/d^2
 
Fred
----- Original Message -----
Sent: 11/15/05 3:29:09 AM
Subject: Re: Focus Fusion

Robin wrote:
 
> Jones Beene wrote:
>
> >  Eric Lerner's comment that reaction rates at 200keV for p,B11 is nearly 4
> > times higher than for p,Li is something I am finding hard to believe.
>
 
Reaction Cross Section for P-Li7
 
 
Reaction Cross Section for P-B11
 
 
At first glance it looks like the cross sections are close to the same.
 
IOW, the 3/5  Li7/B11 coulomb barrier  potential ratio  Z1*Z2*kq^2/d^2 
approximates the 5/11 proton/nucleon ratio because of target atom inertia ?
 
Untangle that one for me.   :-)
 
Fred
 
 

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