Page 137 - bukuneutron

H = D × Q = D × Wx (6.4)

Table 6.1: Quality Factor (Q) and Weight Factor (Wx)

for several types of ionizing radiations.Q adapted from

NRC 10 CFR Part 20 and Wx is adapted from ICRP

Publication 92, Ann ICRP 2003(33)(4):1-121.

Radiation Q Wx

X-ray, γandβ(forallenergies) 11

Neutron

Thermal 25

0.01 MeV 2.5 10

0.1 MeV 7.5 10

0.5 MeV 11 20

> 0.1 - 2 MeV 10 20

> 2 - 20 MeV - 10

> 20 MeV -5

Unknown 10 -

High Energy Protons 10 5

α, heavy nuclie, fission fragment 20 20

Table 6.2: The relationship between unit in describing
radiation dosage

QUANTITY UNIT S.I. UNIT RELATIONSHIP
Absorbed dose Rad Gray (Gy) 1 Gy = 100 rad
Equivalent dose Rem Sievert (Sv) 1 Sv = 100 rem

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