Proper way to define LFP (Lumped Fission Product)

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youpeng
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Proper way to define LFP (Lumped Fission Product)

Post by youpeng » Thu Jan 31, 2013 3:44 pm

Dear all,

I am now planing to use SERPENT to calculate safety related parameters with specific isotopic compositions of fuels, in order to benchmark a sodium cooled fast reactor design. However, in the technical report provided by the organizer, all fission products was categorized into LFP groups for U-235, U-238, Pu-239, Pu-240 and Pu-241 respectively. The concentration of individual isotopes in each group were not described. Hence, is there any possibilities to define LFP instead of isotope concentrations into the material card of SERPENT input?

Thanks for your reading and be eager for your reply.

Regards

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Jaakko Leppänen
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Re: Proper way to define LFP (Lumped Fission Product)

Post by Jaakko Leppänen » Thu Jan 31, 2013 4:20 pm

Unfortunately this is not possible. Serpent handles every FP isotope separately, and the are no LFP's.
- Jaakko

satkinson
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Re: Proper way to define LFP (Lumped Fission Product)

Post by satkinson » Tue Oct 16, 2018 6:28 pm

Hi Jaakko,

This is quite an old post, but is there now an option to define LFP for larger simulations?

Thanks

Ville Valtavirta
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Re: Proper way to define LFP (Lumped Fission Product)

Post by Ville Valtavirta » Wed Oct 17, 2018 9:52 am

It is not possible to use lumped fission products as a part of material composition as there are no cross section libraries for lumped fission products.

-Ville

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