[mesa-users] nuclear reaction rates - n14pg and 3a

[Jakub Ostrowski]

Christoph,

I checked the data and they look exactly as you described them.

Bill,

Thank you for the clarification. It basically covers all I need to know about using reaction rates in my project - at least now.

Cheers,
Jakub

> On 13 Nov 2014, at 18:22, Bill Paxton <paxton at kitp.ucsb.edu> wrote:
> 
> Hi Jakub,
> 
> Don't guess what the rates are --- look in the mesa/data/rates_data files and find out!
> 
> Here's the place in star_job.defaults where you specify which JINA reaclib database file you want to use:
> 
> 
>          !### jina_reaclib_filename
>          ! Empty string means use current standard version.
>          ! Else give name of file in directory `mesa/data/rates_data`,
>          ! e.g., `jina_reaclib_results_20130213default2`
>          ! (which is an 18.8 MB file of rates data).
>          ! To use previous version, set to `jina_reaclib_results05301331`.
>       jina_reaclib_filename = ''
> 
> 
> In the old days we were using jina_reaclib_results05301331; 
> now we use the more recent jina_reaclib_results_20130213default2.
> 
> Searching the current for n14pg says it is from "im05".
> Searching the previous says the same.   So this reaction rate didn't change.
> 
> Similar searches for 3a both give "fy05" -- so this one didn't change either.
> 
> I changed the options for the inlist controls because for the jina rates,
> we don't promise that you are getting Imbriani for n14pg or Fynbo for 3a.
> We simply grab whatever is in the jina database file you have selected.
> So it was misleading to have the control indicate a particular rate.
> 
> To make things more precise they became more confusing.  Typical.
> 
> I believe there may be even more recent versions of the jina database.
> If so, we should do an update --- Ed Brown is the one to ask about this.
> 
> Cheers,
> Bill
> 
> 
> 
> 
> 
> 
> On Nov 13, 2014, at 8:32 AM, Jakub Ostrowski wrote:
> 
>> Hi Christoph,
>> 
>> This is basically what I needed to now. Thank you!
>> 
>> Cheers,
>> Jakub
>> 
>>> On 13 Nov 2014, at 16:48, Christoph Langer <langer at nscl.msu.edu <mailto:langer at nscl.msu.edu>> wrote:
>>> 
>>> Hi Jakub,
>>> 
>>> the current 14N(p,g) rate in the reaclib database is still taken from G. Imbriani et al. ( European Physics Journal A 25 (2005)). 
>>> The 3a reaction in reaclib is from H.O.U. Fynbo et al. ( Nature 433, 136-139 (2005)).
>>> 
>>> So I guess, the rates should be the same as in the previous version. 
>>> 
>>> The JINA reaclib database provides the option to download different sets of rates. This gives you more flexibility.
>>> 
>>> Cheers,
>>> Christoph
>>> 
>>> 
>>> On 11/13/2014 10:32 AM, Jakub Ostrowski wrote:
>>>> Hi,
>>>> 
>>>> A couple of stable releases ago an option ‘Imbriani’ has been removed from set_rate_n14pg and ‘Fynbo’ has been removed from set_rate_3a. Instead of these there is now possibility to choose ‘jina reaclib’. The question is: are these new rates from jina the same as ‘Imbriani’ and ‘Fynbo’ or are they different?
>>>> 
>>>> Cheers,
>>>> Jakub
>>>> 
>>>> 
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