[Mesa-users] Rate Cutoffs below logT < 7

[Rob Farmer]

Have a look at an abundance plot around the mass coordinate equal to
logT=7. If you see a step function in an isotope then there is a bad rate
involving that isotope. In general this problem only involes reactions with
"_to_" in their name which is only ~20 reactions. Also this is likely to
only affect pp reactions which further limits the number of reactions.

Rob


On Wed, 13 May 2020, 22:24 Bradley Munson via Mesa-users, <
mesa-users at lists.mesastar.org> wrote:

> Hi All,
>
> At Josiah's request to share this question so it can be discussed with
> everyone, I've copied it below:
>
> I had a question regarding the email chain with the mesa-users and Ian
> Foley, but didn't want to add to the chain with more (possibly simple)
> questions.
>
> How did you all go about finding the rates that were suddenly turned off
> when logT < 7? I noticed that mesa75 (what we use for RCB evolution) is
> entirely a soft network for version 12115, so this will also have the same
> problem with Li7 reactions for instance. But there is some indication that
> there are other isotopes that use "bad" rates but may have "good" rates
> that can be included instead? I would like to modify mesa75 to exclude any
> rates that have that discontinuity present if possible. I could, of course,
> print all 549 reactions and look for discontinuities in those zones, but I
> don't know if there is a better method.
>
> Best Regards,
>
> Brad
>
>
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