Nuclear Reactions in Stars & in the Laboratory
Nuclear Reactions in Stars & in the Laboratory
Nuclear Reactions in Stars & in the Laboratory
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Stellar reaction rates<br />
r<br />
1<br />
= YT<br />
Ypρ<br />
2 2<br />
NA<br />
< σv<br />
1+<br />
δ<br />
pT<br />
><br />
reactions per s and cm 3<br />
1<br />
λ = Y p<br />
ρ NA<br />
< σv<br />
1+<br />
δ<br />
pT<br />
><br />
reactions per s &<br />
Target nucleus<br />
this is usually referred to<br />
as <strong>the</strong> stellar reaction rate<br />
units of stellar reaction rate N A<br />
: usually cm 3 /s/mole<br />
n<br />
T<br />
X<br />
T<br />
= ρ ⋅ N<br />
A<br />
⋅ = ρ ⋅<br />
AT<br />
N<br />
A<br />
⋅Y<br />
T<br />
X T ; mass fraction<br />
Y T : abundance
Change language