Interpreting (n,n*3) and (n,3n) ENDF Charts

Thread starter Kryptonite-19
Start date Mar 11, 2010

In summary, the (n,n*3) and (n,3n) ENDF charts are used to represent energy-dependent cross sections for neutron interactions with a material. They provide valuable information about the probability of different types of interactions and are used in nuclear engineering to predict neutron behavior, design shielding materials, and understand the effects of neutron radiation on materials. ENDF charts can also represent other reactions such as (n,n), (n,n'), (n,n'p), (n,n'a), and (n,n'α). These charts are created and updated by a collaboration of scientists using experimental data and theoretical models to generate the most accurate representation.

Mar 11, 2010

Kryptonite-19

1. What is the meaning of (n,n*3) and (n,3n)?

(n,n*3) is shown in ENDF charts for Inelastic levels and (n,3n) is shown for Threshold Reactions. For an example, see http://t2.lanl.gov/data/n7-pdf/sm/149.pdf

2. Also can you refer me to a book that explains how to interpret these types of charts?

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Mar 11, 2010

mathman

Science Advisor

http://www.nndc.bnl.gov/exfor/help7.jsp

Try the above.

What is the significance of (n,n*3) and (n,3n) ENDF charts?

The (n,n*3) and (n,3n) ENDF charts are used to represent the energy-dependent cross sections for neutron interactions with a material. These charts provide valuable information about the probability of various types of interactions that can occur between a neutron and a material.

What is the difference between (n,n*3) and (n,3n) reactions?

The (n,n*3) reaction refers to a process where a neutron collides with a nucleus, resulting in the emission of three neutrons. On the other hand, the (n,3n) reaction refers to a process where a neutron collides with a nucleus, resulting in the emission of three neutrons and the absorption of energy.

How are the (n,n*3) and (n,3n) ENDF charts used in nuclear engineering?

The (n,n*3) and (n,3n) ENDF charts are used to predict the behavior of neutrons in nuclear reactors and other nuclear systems. They are also used to design shielding materials and to understand the effects of neutron radiation on materials.

What are some other types of reactions that can be represented on ENDF charts?

ENDF charts can also represent (n,n), (n,n'), (n,n'p), (n,n'a), and (n,n'α) reactions, where 'p' stands for proton, 'a' stands for alpha particle, and 'α' stands for helium-4.

How are ENDF charts created and updated?

ENDF charts are created and updated by a collaboration of scientists from various institutions. They use experimental data and theoretical models to generate the most accurate representation of neutron interaction cross sections. These charts are constantly being updated as new data and methods become available.