[FLASH-USERS] Converting sesame opacities to ionmix4

[Reyes, Adam]

Hi Markus,

Since FLASH4.7 the TOPS opacity tables are natively supported. You can set the runtime parameter(s) for you species

op_<spec>FileType = “tops”

The only considerations to be aware of with TOPS is that you have to generate the tables for multi-group.

The multi-temp multi-material multi-type (mtmmmt) EoS which you are probably using currently only supports tabulated & gamma-law options for the different species.
*********************************************
Adam Reyes


Code Group Leader, Flash Center for Computational Science  
Research Scientist, Dept. of Physics and Astronomy
University of Rochester
River Campus: Bausch and Lomb Hall, 369  
500 Wilson Blvd. PO Box 270171, Rochester, NY 14627
Email adam.reyes at rochester.edu
Web https://flash.rochester.edu
 (he / him / his)


*********************************************



> On Jul 18, 2024, at 3:10 PM, Dr. Markus Nöth <markus.noeth at marvelfusion.com> wrote:
> 
> Dear flash users,
>  
> I’m trying to run a simulation similar to the z-pinch setup, so I’m modifying that one. I want different species than the ones used there. Regarding eos I think I’m fine with the Helmholtz eos unit, but for opacities I would like to use tabulated values that I obtained from the TOPS website. 
>  
> Now, since flash uses its own format for such data, I need to convert the data into that format. I’ve seen in old emails on this thread that opacplot2, found here https://github.com/flash-center/opacplot2,  has been suggested for this purpose.
>  
> Sadly, I’ve not been able to install this tool. The reason being software compatibility issues. The github page says it needs python 2.7 or 3.5, both of which are no longer supported (see https://devguide.python.org/versions/ ).
>  
> Is there a different tool available for this purpose?
>  
> Best,
> Markus
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