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MicroShield是一款輻射劑量計(jì)算軟件,它廣泛應(yīng)用于屏蔽體設(shè)計(jì)與屏蔽外參考點(diǎn)劑量率計(jì)算等方面。 該軟件有16種源項(xiàng)模型并自帶一個含12種屏蔽材料的材料庫以及一個含大量放射性核素的核素庫,用戶還可以根據(jù)工程需要自行添加屏蔽材料,這些功能使用戶在建模時有更廣泛的選擇范圍。
MicroShield除了重視建模、核素參量輸入等功能外,其結(jié)果是以Microsoft Office方式輸出,方便用戶對計(jì)算結(jié)果進(jìn)行后續(xù)應(yīng)用。
MicroShield是完全互動的,并利用豐富的輸入錯誤檢查。集成工具提供結(jié)果,材料和源文件創(chuàng)建的圖形,具有衰減的源推斷(考慮衰變和子堆積的劑量——Ci計(jì)算),衰減導(dǎo)致的暴露率與實(shí)踐的預(yù)測,材料和核素數(shù)據(jù)的訪問行業(yè)衰變熱計(jì)算。
MicroShield現(xiàn)在有兩個不同的版本:MicroShieldPro和MicroShieldLT。MicroShieldPro提供MicroShield軟件的全部功能以及各種源,衰變和其他劑量評估工具。MicroShieldLT提供了基本的三維解決方案算法和基本功能。
MicroShield功能比較:
| 特征 | MicroShieldLT | MicroShieldPro |
| 完全兼容Microsoft Windows10 | √ | √ |
| 支持國際數(shù)字格式 | √ | √ |
| 3D MicroShield 解決方案引擎 | √ | √ |
| 16種不同的幾何形狀 | √ | √ |
| 以國際單位和英制單位輸入 | √ | √ |
| 具有多達(dá)30種成分的定制材料 | √ | √ |
| 包括基于NIST,ANSI/ANS-6.4.2-2006等的60多種定制材料 | √ | √ |
| ICRP 38& 107核素來源 | √ | √ |
生成子產(chǎn)品的源項(xiàng)衰變 | √ | √ |
| 基于ICRP、51、71&116 DCF的多次劑量結(jié)果 | √ | √ |
| 批處理工具 | √ | √ |
| 結(jié)果導(dǎo)出到MicrosoftWord和Excel | √ | √ |
| 靈敏度工具 | √ | √ |
| 特定幾何形狀的多層堆積系數(shù) | √ | |
| 特定幾何的累積因子敏感性 | √ | |
| 外部來源工具 | √ | |
| 源推理工具 | √ | |
| 曝光率工具 | √ | |
| 衰減熱工具 | √ | |
| 材料與核數(shù)據(jù)查看器 | √ | |
| 可用的站點(diǎn)許可證 | √ | |
| 靜默安裝和SCCM支持 | √ |
MicroShield通用功能包括
16個幾何形狀,適應(yīng)偏移劑量點(diǎn)和多達(dá)10個標(biāo)準(zhǔn)屏蔽加上源自屏蔽和圓柱包層
輸入尺寸時,將重新調(diào)整輸入的幾何顯示。尺寸數(shù)據(jù)以米,厘米,英尺或英寸為單位
更新的數(shù)據(jù)(放射性核素,衰減,累積和劑量轉(zhuǎn)換)反映了ICRP 38和107以及ANSI / ANS標(biāo)準(zhǔn)和RSICC出版物的標(biāo)準(zhǔn)數(shù)據(jù)
劑量轉(zhuǎn)換因子包括ICRP出版物116吸收劑量率和來自ANSI / ANS -6.1.1-1977的劑量轉(zhuǎn)換因子
包括基于NIST,ANSI / ANS-6.4.2-2006等各種定制材料
自動和同時計(jì)算積累和未積分的結(jié)果
可以為任何情況設(shè)計(jì)和保存多達(dá)巴中自定義材料,已添加到十二種內(nèi)置材料中
可以創(chuàng)建和保存源并在案例之間移動源,可以是核素或能量,也可以是濃度或總數(shù)。提供了幾種光子分組方法,包括自定義(用戶定義)。
可以使用生成的子產(chǎn)品計(jì)算源衰減
可以使用多達(dá)25個能量組(能量范圍為15keV至10MeV);輸入可以是集中或總計(jì)
可以研究曝光速率對時間,光源尺寸,屏蔽厚度或距離的靈敏度??梢詫φ豁樞蛎舾械剡M(jìn)行積分轉(zhuǎn)換驗(yàn)證
可以計(jì)算衰變熱/能量
能夠使用國際數(shù)字格式(十進(jìn)制逗號等)
幾何源配置包括
點(diǎn)
線
磁盤
矩形區(qū)域 - 垂直
矩形區(qū)域 - 水平
球
氣缸容積 - 側(cè)擋板
氣缸表面 - 端罩
氣缸表面 - 內(nèi)部劑量點(diǎn)
氣缸表面 - 外部劑量點(diǎn)
環(huán)形氣缸 - 內(nèi)部劑量點(diǎn)
環(huán)形氣缸 - 外部劑量點(diǎn)
矩形體積
截斷錐
無限平面
無限平板
MicroShield V13新特性:
MicroShield V13包括
改進(jìn)的計(jì)算算法包括添加更新的National Institute of Standards and Technology (NIST) 質(zhì)量衰減因子 [Hubbell, JH 和 Seltzer, SM (2004)]
擴(kuò)大自定義材料庫以包括30多種新的自定義材料,使庫中的材料達(dá)到100多種
添加了為每個劑量點(diǎn)設(shè)置固定氣隙的功能
包含來自ICRP-21以及ANSI/ANS 6.1.1-1991和2020的劑量轉(zhuǎn)換因子
與Microsoft Windows 10和11的新更新兼容
系統(tǒng)要求
Windows10 或11
英文介紹
MicroShield is a comprehensive photon/gamma ray shielding and dose assessment program that is widely used for designing shields, estimating source strength from radiation measurements, minimizing exposure to people, and teaching shielding principles.
MicroShield is useful to health physicists, waste managers, design engineers, and radiological engineers and only requires a basic knowledge of radiation and shielding principles.
MicroShield is fully interactive and utilizes extensive input error checking. Integrated tools provide graphing of results, material and source file creation, source inference with decay (dose-to-Ci calculations accounting for decay and daughter buildup), projection of exposure rate versus time as a result of decay, access to material and nuclide data, and decay heat calculations.
MicroShield Version 13 Lastest Features:
MicroShield V13 includes
Improved computational algorithms including the addition of updated National Institute of Standards and Technology (NIST) mass attenuation factors [Hubbell, J.H. and Seltzer, S.M. (2004)].
Enlargement of the Custom Material Library to include more than 30 new custom materials, bringing the library to over 100 materials.
Added functionality to set a fixed air gap for each dose point.
Inclusion of dose conversion factors from ICRP-21 as well as ANSI/ANS 6.1.1-1991 and 2020.
Full compatibility with the latest updates to Microsoft Windows 10 and 11.
MICROSHIELD’S FEATURES INCLUDE:
Full Microsoft Windows 8/8.1 (32 bit and 64 bit), Windows 7 (32 bit and 64 bit), Vista and XP compatibility.
Ability to export results into Microsoft Office applications.
Ability to utilize international numerical formats (decimal commas, etc.).
Current industry standard dose conversion factors including ICRP-116, ICRP-74, ICRP-51 as well as ANSI/ANS-6.1.1.
Sixteen geometries that accommodate offset dose points and as many as ten standard shields plus source self-shielding and cylinder cladding.
The geometry display for entry is re-scaled as dimensions are entered. Dimensional data are accepted in meters, centimeters, feet, or inches.
Library data (radionuclides, attenuation, buildup, and dose conversion) reflect standard data from industry standard radiation libraries ICRP-38 and ICRP-107 as well as ANSI/ANS standards and RSICC publications.
Buildup and uncollided results are both automatically and simultaneously calculated.
Sources may be created and saved and moved among cases (either as nuclides or energies) and as concentrations or totals. Several photon grouping methods are provided including custom (user defined) grouping methods.
Source decay can be calculated with daughter products generated using the same algorithms as found in the RadDecay software
GEOMETRY – SOURCE CONFIGURATIONS INCLUDED:
Point
Line
Disk
Rectangular Area – Vertical
Rectangular Area – Horizontal
Sphere
Cylinder Volume – Side Shields
Cylinder Volume – End Shields
Cylinder Surface – Internal Dose Point
Cylinder Surface – External Dose Point
Annular Cylinder – Internal Dose Point
Annular Cylinder – External Dose Point
Rectangular Volume
Truncated Cone
Infinite Plane
Infinite Slab
Requirements:
Microsoft Windows 10or 11