A Method for Monte Carlo Neutral Particle Radiation Transport in a Variable Density Atmosphere

Author

Aidan B. Edens

Date of Award

3-2023

Document Type

Thesis

Degree Name

Master of Science in Nuclear Engineering

Department

Department of Engineering Physics

First Advisor

Whitman T. Dailey, PhD

Abstract

This study focuses on accurately simulating the transport of radiation in the atmosphere to better understand the effects of nuclear weapons. The variable nature of the atmosphere poses a challenge in accurately simulating the prompt radiation following a nuclear explosion. To address this challenge, the Mass Integral Scaling technique is integrated with the Monte Carlo method to perform calculations in a variable density atmosphere. In addition to previous free-field estimates, this work also enables the simulation of transport calculations with other media, such as clouds. Results of neutron and photon fluence have been verified against the standard version of MCNP and improvements in simulation run times and model complexity have been observed.

AFIT Designator

AFIT-ENP-MS-23-M-082

Comments

A 12-month embargo was observed.

Approved for public release. PA case number on file.

Recommended Citation

Edens, Aidan B., "A Method for Monte Carlo Neutral Particle Radiation Transport in a Variable Density Atmosphere" (2023). Theses and Dissertations. 7343.
https://scholar.afit.edu/etd/7343