[Mesa-users] Setting nacre rate for c12_ag_o16

[Rob Farmer]

Hi
The problem is that you have not changed the default rate preferences, thus
all rates are nacre (where available)

You should set:

set_rates_preference = .true.
new_rates_preference = 2

in star_job

To switch all rates over to JINA then use set_rate_c12ag to switch that one
back to NACRE.

How you can tell which rates are being used. First do:
rm $MESA_DIR/data/rates_data/cache/*

Then run your model. MESA will regenerate the rates cache, those with a
_1.bin in their name are nacre, _2.bin are JINA and _0.bin are custom rates.

Rob






On Tue, 26 May 2020 at 18:49, Meisel, Zach via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> Hi Guglielmo,
>
>
>
> A previous Rob answer might be useful:
> https://lists.mesastar.org/pipermail/mesa-users/2017-March/007618.html
> <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mesastar.org%2Fpipermail%2Fmesa-users%2F2017-March%2F007618.html&data=02%7C01%7Cr.j.farmer%40uva.nl%7Cb901ab27f62b40685fa708d80194c9d1%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C637261085844738000&sdata=2tUSlJTzimNpbl4bIaag4n1Wf7wwfSMGKBIfcZkIJ9k%3D&reserved=0>.
>
>
>
>
> 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
> <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Freaclib.jinaweb.org%2Flabels.php&data=02%7C01%7Cr.j.farmer%40uva.nl%7Cb901ab27f62b40685fa708d80194c9d1%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C637261085844748004&sdata=fbqv%2FlAqHC8TvX1Ai%2FkzXRuTX2UnwPjlm%2B8b9tVtRt8%3D&reserved=0>.
> You can also compare various rates for c12(a,g) on Reaclib:
> https://reaclib.jinaweb.org/c12(a,g)
> <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Freaclib.jinaweb.org%2Fc12(a%2Cg)&data=02%7C01%7Cr.j.farmer%40uva.nl%7Cb901ab27f62b40685fa708d80194c9d1%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C637261085844748004&sdata=8Y2gQJK6uVxQsYxC4AMemz0sJx4zTRHwBHb4hAkMR%2BY%3D&reserved=0>.
>   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 <mesa-users at lists.mesastar.org>
> *Sent: *Tuesday, May 26, 2020 12:44 PM
> *To: *Guglielmo Volpato <guglielmogosh at hotmail.it>
> *Cc: *mesa-users <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> 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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