Graduate Thesis Or Dissertation
 

Pair production treatments for deterministic pulse-height distribution simulations

公开 Deposited

可下载的内容

下载PDF文件
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/z316q385n

Descriptions

Attribute NameValues
Creator
Abstract
  • This thesis presents methods for treating annihilation photon pairs in deterministic pulse height distribution (PHD) simulations. The methods are applied in PHD simulations for monoenergtic sources of 1.6 and 2.6 MeV photons incident on 5 and 10 cm 1-D slabs of germanium, sodium iodide, and lead and the results are compared with PHD simulations generated using MCNP5. Comparisons show good agreement between the peak area estimates of the deterministic and Monte Carlo codes. Average relative error in peak area estimates compared to the MCNP5 benchmark was 7%. A new treatment for the distribution of energy deposition resulting from group-to-group transfer is introduced that provides limited improvement in resolution when compared to treatments used in previous work [1]. An iteration parameter study is also conducted on slab geometry systems composed of carbon, silicon, germanium, tin, lead, and lead sodium iodide of various thickness. The results indicate a maximum of approximately seven iterations required to converge transport solutions (>95% of escaping boundary current) for spatially uniform distributions of 0.511 MeV photons in 5 cm thick slabs.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
权利声明
Publisher
Peer Reviewed
Language
Replaces

关联

Parents:

This work has no parents.

属于 Collection:

单件

缩略图 标题 上传日期 公开度 行动
file details MacQuiggMichaelR2011.pdf 2017-08-02 公开 下载