[mesa-users] approx13

[Bill Paxton]

On May 14, 2014, at 3:49 PM, Ken Shen wrote:

> One major difference is the presence and participation of neutrons and protons.  Among other things, I'd like to show that they are indeed important for a given regime and are not fully accounted for with just the (a,p)(p,g) reactions in approx13.

you might start with a copy of approx20 and remove reactions to get to something very close to approx13.

get a list of reactions in approx20 (show_net_reactions_info = .true.)

edit your copy of approx20 to get rid of ones you don't want.

	remove_reactions(
		....
	)



> 
> I think the approx13.net I attached before works if the isotope list also contains neut, prot, and h1.  But it would be good to figure out why the network is wrong without them, even though those isotopes don't participate!

i agree that it would be good to understand that (along with a ton of other things on my list of things i don't understand!)

but i can't get it to soon.   let us know if you figure it out. 

-B







> 
> 
> 
> On Wed, May 14, 2014 at 3:23 PM, Bill Paxton <paxton at kitp.ucsb.edu> wrote:
> 
> On May 14, 2014, at 2:57 PM, Ken Shen wrote:
> 
>> Hi Bill, performance isn't an issue for my actual calculations, so I've been using soft-wired networks with lots of isotopes.  But I'm trying to compare to someone else's calculation, which used approx13...
>> 
> 
> and what disaster happens if you compare to approx20 in mesa?    what is in approx20 that isn't in approx13?   and is it important in the regime you are studying (if so, the other calculation is wrong; if not, you're good to go.)
> 
> -b
> 
> 
> 

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