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Related Experiment Videos

Shielding for beta-gamma radiation

J J Fletcher1

  • 1Radiation Protection and Health Physics Department, T.N.R.C., Tajoura, Libya.

Health Physics
|June 1, 1993
PubMed
Summary
This summary is machine-generated.

A new cubic function accurately calculates lead shielding thickness for beta-gamma radiation. This method bypasses the traditional half-value layer approach, offering a more precise way to determine radiation shielding needs.

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Area of Science:

  • Nuclear Engineering
  • Radiation Shielding Physics

Background:

  • Accurate calculation of radiation shielding is crucial for safety.
  • Conventional methods like the half-value layer (HVL) approach can be imprecise for complex sources.

Purpose of the Study:

  • To develop a more accurate method for determining lead shielding thickness for beta-gamma radiation.
  • To incorporate a build-up factor function into a general shielding equation.

Main Methods:

  • A cubic polynomial function was developed to represent the build-up factor (B) for lead.
  • This function was based on the relaxation length (mu x).
  • A computer program was created to implement the "general beta-gamma shielding equation" using this function.

Main Results:

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  • The study successfully expressed the build-up factor for lead as a cubic function of relaxation length.
  • A computational method was established to determine shielding thickness for polyenergetic beta-gamma sources.
  • This new method avoids the limitations of the conventional "add-one-HVL" technique.

Conclusions:

  • The developed cubic function and computational program provide a more accurate approach to beta-gamma shielding calculations.
  • This method offers an alternative to traditional techniques, improving the precision of radiation shielding design.