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's® Features include:

1. Sixteen geometries that accommodate offset dose points and as many as ten standard shields plus source self-shielding and cylinder cladding.
2. The geometry display for entry is re-scaled as dimensions are entered. Dimensional data are accepted in meters, centimeters, feet, or inches. Display can be rotated in 3-D for viewing and printing.
3. Library data (radionuclides, attenuation, buildup, and dose conversion) reflect standard data from RSICC, ANS, and ICRP.
4. Provides the ability to access and use the Optional ICRP-38 Nuclide Library. This library, which is significantly larger than the standard library, is currently being distributed with RadDecay® 2.0. Microshield® will keep track of which library is used an analysis or the creation of a source file.
5. Buildup and uncollided results are both automatically and simultaneously calculated.
6. Provides the ability to design and save up to eight custom materials for any case to add to the twelve built-in materials.
7. 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).
8. Source decay can be calculated with daughter products generated.
9. As many as twenty-five energy groups (with an energy range of 15 keV to 10 MeV) may be used; input may be concentration or totals.
10. Sensitivity of exposure rate to time, source dimension, shield thickness, or distance can be investigated. Integration conversion verification can be conducted with sensitivity to quadrature order.
11. Decay heat/energy can be calculated.
12. Improved flexibility for users to control input and output units, case file saving, printing, and emailing, export of results including graphs to office documents.
13. Provides the ability to define multiple (up to six) dose points for a case for almost all geometries. 
14. Provides the ability to operate on multiple cases simultaneously.
15. Improved handling of graphics including displayed and printed graphs as well as the case model.
    

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 2000/XP
• For outputing results to Microsoft Excel and Word, Excel and Word 2003 are required.

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