Nuclear Reactions in Stars & in the Laboratory
Nuclear Reactions in Stars & in the Laboratory
Nuclear Reactions in Stars & in the Laboratory
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0.007<br />
Stellar lifetime of nuclei<br />
abundance<br />
0.006<br />
0.005<br />
0.004<br />
0.003<br />
0.002<br />
0.001<br />
Y A (t)<br />
τ<br />
Y B<br />
(t)<br />
same<br />
abundance<br />
level Y A<br />
(t=0)<br />
0<br />
10 -2 10 -1 10 0 10 1 10 2 10 3 10 4 10 5<br />
time<br />
Y<br />
Y<br />
A<br />
B<br />
( t)<br />
( t)<br />
=<br />
=<br />
Y<br />
Y<br />
0 A<br />
0 A<br />
e<br />
−λ<br />
t<br />
(1 −<br />
e<br />
−λ<br />
t<br />
)<br />
τ =<br />
1<br />
=<br />
λ<br />
1<br />
Y a<br />
ρ < σ v<br />
N A<br />
>
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