STRONG, ELECTROMAGNETIC, AND WEAK INTERACTION TABLES

Special heavy ion reactions are then tabulated (taken from Caughlan and Fowler 1988), giving the total and reverse rates for each reaction, as well as the temperature dependent branching ratios where applicable. The 3alpha reaction rate has been divided by 6, while the ¹²C+¹²C and ¹⁶O+¹⁶O rates have both been divided by 2 to account for identical reactants.

Next, strong and electromagnetic reaction rates are tabulated in 12 columns. For each isotope listed, 6 of the columns are defined as "Forward Rates", the others are defined as "Reverse Rates" as follows:

Forward Rates	Forward Rates	Reverse Rates	Reverse Rate
(n,gamma)	(alpha,p)	(gamma,n)	(p,alpha)
(p,n)	(alpha,n)	(n,p)	(n,alpha)
(p,gamma)	(alpha,gamma)	(gamma,p)	(gamma,alpha)

A forward rate increases the charge and/or the atomic number of the target nuclei. The rate for reaction I(j,k)L on target I producing species L, is found by choosing the row in the table corresponding to the isotope (I or L) with the lowest Z value, then moving over to the entry labeled under column (j,k).

For example, consider the "Forward Rate" ¹²C(alpha,gamma)¹⁶O. Choose the row in the table corresponding to the reaction isotope with the lowest Z value (¹²C), then move over to the value listed under the column labeled (alpha ,gamma). The choice of the correct row for a reaction given in terms of a "Forward Rate" will be given by the target nuclei. The corresponding inverse reaction ¹⁶O(gamma,alpha)¹²C, is found by choosing the isotope with the lowest Z value (¹²C), and moving over to the value listed under column (gamma,alpha). The appropriate inverse rate for any reaction given in terms of a "Forward Rate" will be the number directly to the right of its "Forward Rate".

As an example of a reaction given in terms of a "Reverse Rate", consider the reaction ⁴¹K(p,alpha )³⁸Ar. This rate is found by choosing the row corresponding to the isotope with the lowest Z value (³⁸Ar), and moving over to the value listed under the column labeled (p,alpha).

Next, weak interaction rates are tabulated. For T9<1.0 or rho<10⁶ gm cm-3, a mean ground state weak decay rate (s^-1) has been calculated from the nuclides half-life, and taken as a lower limit to the weak decay rate. These are provided in a separate table (Table 10) following the reaction reference bibliography. Given are the beta decay rate (beta^-) out of the isotope, and the sum of positron decay plus electron capture (beta⁺ + EC) into the isotope. Table 11 gives the temperature dependent beta⁺ rate into nucleus AZ that includes contributions from the ground state plus first excited isomeric state (assumed in thermal equilibrium) for 35 nuclei in Table 10. For T9 > 1.0, the temperature dependent rates from Fuller et al. are given. The weak rates are given in 12 columns for 6 values of density between 6 < log10(rho) < 11. For each isotope at a specified density two columns are listed, the first column gives the beta decay rate (beta^-) out of the isotope, the second column gives the sum of positron decay plus electron capture (beta⁺ + EC) into the isotope.