How Do I Interpret MCNP Output Table 140 for Reaction Rates?

AI Thread Summary
Interpreting MCNP output table 140 for reaction rates can be challenging, as it provides data like total collisions and weight lost to capture rather than direct reaction rates. To convert weight lost to capture into an actual reaction rate, one needs to understand the relationship between production and consumption rates of U-233 from thorium. The breeding ratio of U-233 can be calculated using the formula: production rate of U-233 divided by consumption rate of U-233. While the original poster expressed frustration with the software and sought assistance, they later indicated that they received help and resolved their issue. Engaging in further training on MCNP is expected to enhance their understanding and ability to interpret the data effectively.
Azael
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Im having some trouble interpreting the MCNP output file, more specificaly table 140 that describes reaction rates.

The problem of course is that the acctual reaction rates isn't written but rather things like total colissions, collions*weight, weight lost to capture etc.

How do I convert for instance the weight lost to capture into a acctual reaction rate?

The information I want to find is the breeding ratio of u-233 from thorium so I want.

[Th-232(n,gamma)-Pa-233(n, absorbtion)]/U-233(n, absorbtion).

i.e production rate of u-233 divided by consumption rate of u-233. But I don't have the slighest clue how to figure that out from the table 140 information? I have attached the table.
 

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Can't help you for the moment. At the end of May I will follow a course on MCNP, maybe then I'll be able to help :smile:
 
Fortunaly I got some help so its a solved problem :)

99% of the time spent on my masters thesis so far has only been familiarising myself with different software :( Frustration is starting to run quite high!
 
Dear Azael
Please convey to me what was the answer of your question.
I also want to know.
Best Wishes
 

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