Dose rate measurement through MCNP

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SUMMARY

The discussion focuses on calculating dose rates (Gy/h, rad/h) from a point source using the MCNP (Monte Carlo N-Particle Transport Code) simulation. Users can utilize the F6 tally to obtain results in MeV/g, which can be converted to Gray or rad using the FM card. To derive dose rates, one must multiply the dose obtained from the F6 tally by the number of particles emitted per second, as MCNP provides results for a single particle.

PREREQUISITES
  • Understanding of MCNP (Monte Carlo N-Particle Transport Code)
  • F6 tally usage in MCNP for energy deposition calculations
  • Knowledge of radiation dose units (Gray, rad)
  • Basic principles of particle emission rates
NEXT STEPS
  • Research how to implement the FM card in MCNP for dose conversion
  • Learn about particle emission rates and their impact on dose calculations
  • Explore advanced MCNP features for dose rate simulations
  • Study the relationship between energy deposition and dose rate in radiation physics
USEFUL FOR

This discussion is beneficial for radiation physicists, medical physicists, and researchers involved in radiation dose calculations using MCNP simulations.

Salman Khan
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I am interested to calculate dose rate (gy/h, rad/h) from a point source at a certain distance through MCNP. If I use F6 tally it will give answer in Mev/g which can be converted to Gray or rad by using FM card, but I don't know how can I find dose rate like rad/h or g/h.?
 
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Hi,
1 Gy = 1 J/kg
1 eV = 1.6022E-19 J
hope it's help
 
PSRB191921 said:
Hi,
1 Gy = 1 J/kg
1 eV = 1.6022E-19 J
hope it's help
I know to convert F6 tally (Mev/g) to dose (Gray) but how to find dose rate i.e Gray/hour from MCNP ?
 
mcnp gives the result for one particle. Simply multiply by the number of particles emitted per second
 
Ok thanks
 

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