Search found 7 matches

by Margo
Mon Aug 24, 2020 10:32 pm
Forum: Users
Topic: Cross-section generation questions
Replies: 5
Views: 507

Re: Cross-section generation questions

Dear Ana, First of all thank you a lot for your reply. What I am trying to check if I can usethe Beer-Lambert law to estimate macroscopic cross section of absorber in material. I want to compare it with macroscopic cross section that I simply tallied with det option (Macroscopic reaction rate / flux...
by Margo
Wed Aug 05, 2020 2:33 pm
Forum: Users
Topic: Cross-section generation questions
Replies: 5
Views: 507

Re: Cross-section generation questions

Sorry for somehow repetitive and basic question, however as I am not sure if I fully understood the answers, I'd like to ask again. I would like to estimate the effective macroscopic cross section of a medium with few isotopes that have high microscopic thermal absorption cross section. I have an ex...
by Margo
Mon Feb 27, 2017 2:11 pm
Forum: Users
Topic: Errors in burnup calculations
Replies: 1
Views: 864

Errors in burnup calculations

Dear all, I have a problem with my calculations and the results themselfs. I ran burnup calculations for different libraries - one with JEFF3.1.1 and one with ENDFB7. Now the discrepancy between both libraries is extremely big - between 200 and 300 pcm. I'm guessing there's something wrong with libr...
by Margo
Mon Nov 21, 2016 12:52 pm
Forum: Users
Topic: How to get external source?
Replies: 35
Views: 17938

Re: How to get external source?

OK, thank you!
Problem solved, fixing srcrate the way you said, helped.
by Margo
Tue Nov 15, 2016 11:51 am
Forum: Users
Topic: How to get external source?
Replies: 35
Views: 17938

Re: How to get external source?

Thank you for your replay. I did defined the external source using sb option, however I get very different results from MCNP using the same data. For example all SERPENT flux values from detectors are about 30% lower. detector is defined using with it's volume given. I'm wondering if there is any no...
by Margo
Mon Nov 14, 2016 3:02 pm
Forum: Users
Topic: How to get external source?
Replies: 35
Views: 17938

Re: How to get external source?

Dear All, I'm trying to perform calculations for a case with an external source. I'm using detectors to measure interesting for me values, that is flux and reaction rates. I have a PuBe source with it's histogram and bin probabilities. The emission rate is 2.0E6. However comparing values of flux and...
by Margo
Wed Jul 27, 2016 1:59 pm
Forum: Users
Topic: Material balance
Replies: 2
Views: 3387

Material balance

Dear all,

I have a very basic question/problem, yet I couldn't find any answer either in manual nor on the forum.
I'm trying to get composition of all materials, not only burned ones, at each burnup step. Is there any way I could do it?

Thank you in advance,

Margo