Neutron Reaction: Calculating Total Cross Section

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    Neutron Reaction
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Discussion Overview

The discussion revolves around calculating the total cross section for neutron reactions at various energy levels, particularly focusing on the challenges faced at low energy where parameters are not well-defined. Participants explore different models and approaches, including the optical model and the Breit-Wigner formula.

Discussion Character

  • Exploratory
  • Homework-related
  • Technical explanation

Main Points Raised

  • One participant is researching neutron reactions across a range of energies and is using the optical model for intermediate and high energies but struggles with low-energy reactions due to unknown parameters.
  • Another participant requests clarification on the specifics of the research, including the type of reaction, energy range, and unknown parameters, and questions whether resonances are being used or if parameters are derived from experimental data.
  • A participant expresses a desire to use the Breit-Wigner formula for calculating the cross section of neutron resonance reactions but notes a lack of knowledge regarding many of the required parameters.
  • There is a reiteration of the need for more information about the specific reaction being examined, and a suggestion that the discussion may belong in a homework section due to its nature.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are multiple competing views regarding the approach to calculating the total cross section and the specific details of the research question remain unclear.

Contextual Notes

Limitations include unspecified parameters necessary for the Breit-Wigner formula, the lack of clarity on the specific neutron reaction being studied, and the potential dependence on experimental data that has not been provided.

ndtkhanhtrinh
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Neutron Reaction?

Now, I am doing a research about neutron reaction with many level of energy. With intermediate and high energy, I use optical model to calculate the total cross section of the reaction. But in the low energy, I can not do like that because I do not know about the parameters of each reaction. How can I to calculate the total cross section?
 
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please specify.

at what level are your "research" ?

What reaction, what energy range are you examine?

What parameters don't you know? Do you use resonances? are your parameters from experimental data? etc.
 
I want to use Breit-Wigner formula to calculate the cross section of neutron resonance reaction.
But, in fact, in that formula, there are a lot of parameters I do not know.
 
ndtkhanhtrinh said:
I want to use Breit-Wigner formula to calculate the cross section of neutron resonance reaction.
But, in fact, in that formula, there are a lot of parameters I do not know.

you still did not say what reaction you are looking at etc.

And this is HOMEWORK, you wrote it in your PM to me, so this should be moved to HW section.
 

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