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
 
http://www.phy.ornl.gov/astrophysics/data/cf88/plot/react34.gif
 
Reaction Cross Section for P-B11
 
http://www.phy.ornl.gov/astrophysics/data/cf88/plot/react57.gif
 
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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