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RPR-45

Simple shield e^{-μx}

Narrow-beam attenuation.

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GoverningSimple shield e^{-μx}

Governing equation

D=D0e−muxD=D_0 e^{-\\mu x}

where

D0
D0 (mGy)
mu
mu (1/cm)
x
x (cm)
D
Simple shield e^{-μx} (mGy)

Lecture brief

Historical brief

Inverse-square, half-value layer, ICRP weighting and ALARA are the protection craft since the 1920s commissions. The lab computes transmission, equivalent dose and a shielding snapshot. This sheet (RPR-45 — Simple shield e^{-μx}) is the form associated with Simple shield e^{-μx}. Working symbols: D0D0, mumu, xx →\rightarrow DD. Narrow-beam attenuation. Pedagogical SI sheet with a live model and a swept parameter.

Purpose

Purpose: compute DD from D0D0, mumu, xx in Radiation protection via D=D0e−muxD=D_0 e^{-\\mu x} Narrow-beam attenuation. Use it when a real radiation protection question must be answered in SI before a code check.

Live realistic example

In symbols

Live case. Given D0=20.000 mGyD0 = 20.000\,\mathrm{mGy}, mu=0.400 1/cmmu = 0.400\,\mathrm{1/cm}, x=5.000 cmx = 5.000\,\mathrm{cm}, the governing relation D=D0e−muxD=D_0 e^{-\\mu x} yields D=2.707 mGyD = 2.707\,\mathrm{mGy}. One governing identity, SI units, a single sweep on the sheet. Move a slider: the numbers are this situation, not a canned story.

Calculator

Inputs

Outputs

  • Simple shield e^{-μx} D2.707 mGy
Reading speed

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RPR-45 · dose
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Narration of this film

One governing identity, SI units, a single sweep on the sheet.

Narrow-beam attenuation. Pedagogical SI sheet with a live model and a swept parameter.

Reading speed

Watch on YouTube