[Mesa-users] Re3: Calculate the epsilon of nuclear reaction

[辛文宇]

Hi, Prof. Timmes,

Thanks you very much. This may be very helpful.

Wenyu


> -----原始邮件-----
> 发件人: "Francis Timmes" <fxt44 at mac.com>
> 发送时间: 2022-12-29 20:57:29 (星期四)
> 收件人: "辛文宇" <wyxin at nao.cas.cn>, xinwenyu16 at mails.ucas.ac.cn
> 抄送: "Frank Timmes" <fxt44 at mac.com>, mesa-users <mesa-users at lists.mesastar.org>
> 主题: Re: Re2: [Mesa-users] Calculate the epsilon of nuclear reaction
> 
> hi wenyu,
> 
> for versions around 11701 - 12778 one can extract the desired information 
> by incorporating some calls into your run_star_extras routines.
> 
> https://lists.mesastar.org/pipermail/mesa-users/2022-April/013609.html
> 
> http://doi.org/10.5281/zenodo.3372837
> 
> this was how it was done in the past, before rob & earl did a nice job 
> making the flow more general and a default option in 22.11.1.
> 
> fxt
> 
> 
> 
> 
> 
> > On Dec 29, 2022, at 12:19 AM, 辛文宇 <wyxin at nao.cas.cn> wrote:
> > 
> > Hi, Prof. Timmes,
> > 
> > Thanks very much for the infomation of newest version of MESA. These update may be useful for my
> > following work. However, I have calculate a series of models with MESA 12778 and it is time-consumed
> > to update those models with newest version of MESA.
> > Now I want to ensure the ignition temperature of C+C reaction when X(C)=1, 0.1, 1E-3 and so on, 
> > according to the formula of eps_nuc = eps_neu. I have find your code from https://cococubed.com/code_pages/nuloss.shtml
> > which can calculate eps_neu and its derivatives. But I need eps_nuc and its derivatives now.
> > Thus, it is better for me to find the subrotine in MESA to calculate these value independently.
> > 
> > I also checked the book of kippenhahn, in wich a formula to calculte eps_nuc of C+C is provided,
> > but this formula used the C+C rate of CF88. In our models, the C+C rate from Tumino 2018 is also used in some
> > models. I am not sure how to replace CF88 to Tumino 2018 in the fomula.
> > 
> > Thanks,
> > Wenyu
> > 
> > 
> > > -----原始邮件-----
> > > 发件人: "Francis Timmes" <fxt44 at mac.com>
> > > 发送时间: 2022-12-28 23:56:40 (星期三)
> > > 收件人: "辛文宇" <wyxin at nao.cas.cn>, "xinwenyu16 at mails.ucas.ac.cn" <xinwenyu16 at mails.ucas.ac.cn>
> > > 抄送: "Frank Timmes" <fxt44 at mac.com>, mesa-users <mesa-users at lists.mesastar.org>
> > > 主题: Re: [Mesa-users] Calculate the epsilon of nuclear reaction
> > > 
> > > the current public release 22.11.1 includes the capability of
> > > including individual nuclear reaction rates and related quantities 
> > > in the history or profile data files - thank you rob & earl! 
> > > 
> > > see section 10.3 of the arxiv version of the mesa VI instrument paper
> > > https://ui.adsabs.harvard.edu/abs/2022arXiv220803651J/abstract , 
> > > and visit $MESA_DIR/r22.11.1/star/defaults.
> > > 
> > > fxt
> > > 
> > > 
> > > 
> > > 
> > > 
> > > > On Dec 28, 2022, at 8:06 AM, 辛文宇 via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> > > > 
> > > > I know the subotine of  $MESA_DIR/net/test/src/sample_net.f90
> > > > However, this subrotine give the epsilon of a centain network, 
> > > > instead of one reaction. 
> > > > 
> > > > Thanks, 
> > > > Wenyu 
> > > > 
> > > > 
> > > > -----原始邮件-----
> > > > 发件人:"辛文宇 via Mesa-users" <mesa-users at lists.mesastar.org>
> > > > 发送时间:2022-12-28 22:57:14 (星期三)
> > > > 收件人: mesa-users at lists.mesastar.org
> > > > 抄送: "xinwenyu16 at mails.ucas.ac.cn" <xinwenyu16 at mails.ucas.ac.cn>
> > > > 主题: [Mesa-users] Calculate the epsilon of nuclear reaction
> > > > 
> > > > Dear everyone: 
> > > > 
> > > > I want to calculate the energy generation rate(epsilon) for a certain reaction rate. 
> > > > Such as 12C+12C reaction rate, I want to calculate the epsilon of 12C+12C reaction with rate from different references under different logT, logRho and mass fraction of 
> > > > 12C. Where this subrotine is in MESA_dir. 
> > > > 
> > > > Thanks, 
> > > > Wenyu 
> > > > _______________________________________________
> > > > mesa-users at lists.mesastar.org
> > > > https://lists.mesastar.org/mailman/listinfo/mesa-users
> > > > 
> > </xinwenyu16 at mails.ucas.ac.cn></mesa-users at lists.mesastar.org></mesa-users at lists.mesastar.org></mesa-users at lists.mesastar.org></fxt44 at mac.com></xinwenyu16 at mails.ucas.ac.cn></wyxin at nao.cas.cn></fxt44 at mac.com>
> 
</wyxin at nao.cas.cn></mesa-users at lists.mesastar.org></fxt44 at mac.com></wyxin at nao.cas.cn></fxt44 at mac.com>