Nuclear Shielding Attenuation: lead
Mass attenuation coefficients, linear attenuation coefficients, half-value layers (HVL), tenth-value layers (TVL), and buildup factors for gamma-ray and neutron shielding design. Covers lead, ordinary concrete, barite concrete, steel, water, polyethylene, borated polyethylene, and tungsten at gamma energies from 0.1 to 10 MeV. Neutron removal cross sections for fast and thermal neutrons. Sources: NIST XCOM database, ANSI/ANS-6.4.3-1991 buildup factors.
| shielding material | radiation energy key | HVL cm (cm) | TVL cm (cm) | density g per cm3 (g/cm3) | energy MeV (MeV) | linear attenuation coefficient per cm (1/cm) | mass attenuation coefficient cm2 per g (cm2/g) | mean free path cm (cm) | notes | radiation type |
|---|---|---|---|---|---|---|---|---|---|---|
| lead | gamma#0.1000 | 0.01101 | 0.03657 | 11.35 | 0.1 | 62.98 | 5.549 | 0.01588 | NIST XCOM Table z82; density=11.35 g/cm3 (standard); HVL=ln(2)/mu; TVL=ln(10)/mu | gamma |
| lead | gamma#0.2000 | 0.06117 | 0.20327 | 11.35 | 0.2 | 11.33 | 0.9985 | 0.08826 | NIST XCOM Table z82; photoelectric dominant below 0.5 MeV Pb | gamma |
| lead | gamma#0.5000 | 0.3783 | 1.2574 | 11.35 | 0.5 | 1.832 | 0.1614 | 0.546 | NIST XCOM Table z82 | gamma |
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