检索结果-南通市图书馆

Gamma-ray shielding study of light to heavyweight concretes using MCNP-4C code

Nuclear Science and Techniques 2017年第2期28卷 1-7页

作者： Reza Bagheri alireza khorrami moghaddam Ali Yousefi Nuclear Fuel Cycle Research School (NFCRS) Nuclear Science and Technology Research Institute (NSTRI)Tehran 14155-1339 Iran Radiology Department Paramedical Faculty Mazandaran University of Medical Sciences SariMazandaran 14536-33143 Iran

In this work, linear and mass attenuation coefficients, half and tenth-value layers, effective atomic number and electron density of different types of concretes were determined at 316.51, 468.07, 511, 662, 1173 and 1332 keV using MCNP-4C code and Win XCom programs. The MCNP-4C and Win XCom results agreed well with each other, with differences of \±1.9%. The results agreed with available experimental data, too, with differences of \±6%.The MCNP-4C results showed better agreement with the experimental data than the Win XCom results. Also, it was found that the effective electron density of studied concretes varies in the range of(2.83–3.2) 9 10^(23)electron/g.

关键词： Concrete Shielding MCNP-4C WinXCom Mass attenuation coefficient Effective atomic number and electron density

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Determination of water equivalent ratio for some dosimetric materials in proton therapy using MNCPX simulation tool

引用

Nuclear Science and Techniques 2019年第2期30卷 19-28页

作者： Reza Bagheri alireza khorrami moghaddam Bakhtiar Azadbakht Mahmoud Reza Akbari Seyed Pezhman Shirmardi Radiation Application Research School Nuclear Science and Technology Research Institute Radiology Department Allied FacultyMazandaran University of Medical Sciences (MazUMS) Department of Medical Engineering Borujerd BranchIslamic Azad University Therapy Level Laboratory Secondary Standard Dosimetry Laboratory

The water equivalent ratio(WER) was calculated for polypropylene(PP), paraffin, polyethylene(PE), polystyrene(PS), polymethyl methacrylate(PMMA), and polycarbonate materials with potential applications in dosimetry and medical physics. This was performed using the Monte Carlo simulation code, MCNPX, at different proton energies. The calculated WER values were compared with National Institute of Standards and Technology(NIST) data, available experimental and analytical results,as well as the FLUKA, SRIM, and SEICS codes. PP and PMMA were associated with the minimum and maximum WER values, respectively. Good agreement was observed between the MCNPX and NIST data. The biggest difference was 0.71% for PS at 150 MeV proton energy. In addition, a relatively large positive correlation between the WER values and the electron density of the dosimetric materials was observed. Finally, it was noted that PE presented the most analogous Depth Dose Characteristics to liquid water.

关键词： Water equivalent ratio Proton therapy Dosimetric materials MCNPX code

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：