[Mesa-users] Setting nacre rate for c12_ag_o16

[Meisel, Zach]

Hi Guglielmo,

A previous Rob answer might be useful: https://lists.mesastar.org/pipermail/mesa-users/2017-March/007618.html.

The ./show_rates code lets you see which reaction rates you’re using.

You may also want to check what the default was for the version of Reaclib that you’re using, since the Nacre rate was at one point the default.  The reaction rate label is in the jina rate file located in $MESA_DIR/data/rates_data/.  The meanings of the labels are on the Reaclib webpage: https://reaclib.jinaweb.org/labels.php.  You can also compare various rates for c12(a,g) on Reaclib: https://reaclib.jinaweb.org/c12(a,g).   It could be that the two different rates you use just aren’t that different for your purposes.

-Zach

----
Zach Meisel
Assistant Professor of Physics & Astronomy
Director, Edwards Accelerator Laboratory
Ohio University
Email: meisel at ohio.edu
Web: http://inpp.ohio.edu/~meisel

From: Rob Farmer via Mesa-users<mailto:mesa-users at lists.mesastar.org>
Sent: Tuesday, May 26, 2020 12:44 PM
To: Guglielmo Volpato<mailto:guglielmogosh at hotmail.it>
Cc: mesa-users<mailto:mesa-users at lists.mesastar.org>
Subject: Re: [Mesa-users] Setting nacre rate for c12_ag_o16

Hi
Can you please attach your full inlist? And mesa version

Thanks
Rob

On Tue, 26 May 2020, 18:26 Guglielmo Volpato via Mesa-users, <mesa-users at lists.mesastar.org<mailto:mesa-users at lists.mesastar.org>> wrote:
Hi all,
I'm having some problems while trying to change the rate for the 12C(a,g)16O reaction. I write in the inslist_common (I'm basing my model on the example_make_pre_ccsn from test_suite) in the section &star_job  the following: set_rate_c12ag = 'NACRE'.  But when the evolution ends it seems that there isn't any change at all from the model without the above line, which theoretically uses the jina reaclib rate for that reaction. How can i be sure that the rate of the reaction is set properly? Shouldn't this different rate change something regarding the e.g. co_core_mass of the star?
Thanks to anyone that tries to give some advises

Guglielmo

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