Register to reply

14-N (n,p) 14-C Reaction

by cajunjacket
Tags: reaction
Share this thread:
Apr12-10, 02:40 PM
P: 2
I feel like a fraud. I learned neutron kinematics many years ago, yet I don't even know how to determine the Average energy of each particle being emitted from a basic nuclear reactions such as the one in the subject line.

What am I trying to calculate?

The average energy of a particle leaving a reaction such as the one above, i.e. not an elastic or inelastic reaction. A reaction involving a Q-value.

In particular, I want to calculate the average energy for a given incoming neutron energy. The test case I am using as a sanity check is a 20 MeV neutron striking 14N, producing a proton and 14C. The Q-value for this reaction is 625.8706 keV. The average energy of the exiting proton is supposed to be 3.974 MeV.

I have attempted to calculate the average energy, but I keep getting 17.9874 MeV using the methods presented in:, yet I did not consider relativistic effects. Regardless the relativistic effects shouldn't be a factor 4 difference in this case because of the relatively low kinetic energy compared with the rest mass of a neutron.

Any help would be greatly appreciated.

Phys.Org News Partner Physics news on
Scientists uncover clues to role of magnetism in iron-based superconductors
Researchers find first direct evidence of 'spin symmetry' in atoms
X-ray laser probes tiny quantum tornadoes in superfluid droplets

Register to reply

Related Discussions
Mathematical relationship between reaction time and reaction rate HELP! Biology, Chemistry & Other Homework 2
Fundamentals of Reaction Theory: reaction rate constant in the statistical ensemble Biology, Chemistry & Other Homework 0
Is there a reaction called nucleus reaction? High Energy, Nuclear, Particle Physics 6
If a reaction is not spontaneous is there any of making that reaction occur? Chemistry 6
Reaction of Mg with acids (molat enthalpy and rate of reaction) Biology, Chemistry & Other Homework 1