How is Alpha Particle Energy Defined in MCNP6?

Thread starter physadict
Start date Jan 24, 2024
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Alpha particle Energy Mcnp6

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The discussion revolves around the configuration of simulation parameters for a physics model, detailing specific values for different modes and materials. Key parameters include the energy levels and positions for materials $MAT1 and $MAT2, with various negative values indicating potential energy states. A warning is noted regarding the constant nature of the external variable, which typically varies in most scenarios. The setup includes specific definitions for source and particle interactions, with a focus on ensuring accurate simulation results. Overall, the thread emphasizes the importance of precise parameter settings in achieving reliable outcomes in the model.

Jan 24, 2024

physadict

TL;DR: Hello everyone here,

I do need your help in this matter, please kindly help me solve this problem. I am new to this forum and now am seeking for help.

I'm new to MCNP code, and I ran the MCNP6 code with particle alpha mode a and 'phys:a'. Where the default energy is 100 MeV. if I want to use more than 250 MeV energy, How do I arrange it?
How to determine the maximum energy in mcnp6?

thanks

15- mode a
16- m1 1000. -0.111894 $MAT1
17- 8000. -0.888106
18- m2 6000. -0.000124 $MAT2
19- 7000. -0.755268 8000. -0.231781 18000. -0.012827
20- imp:a 1 3r 0 $ 1, 5
21- phys:a 250
22- sdef pos 5 0 0 axs=1 0 0 ext=-8 rad=d1 par=34 erg=250 vec=1 0 0 dir=1
warning. ext is constant. in most problems it is a variable.
23- si1 1 5
24- sp1 -21 1
25- f6:a 3 2
26- nps 1000

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