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Principle Isotopes in Sealed Sources


Isotope

Physical
Form

Types of Use

Half Life

Type

RA-226

Solid

Radiography
Fire Alarm
Vacuum Gauge

1620Y

Gamma Alpha

CS-137

Solid

Density
Gauge

33Y

Gamma

CO-60

Solid

Radiography
Bin Level

5.3Y

Gamma

IR-192

Solid

Radiography

75D

Gamma

KR-85

Gas

Thickness
Gauge Switch
Lamp

10Y

Gamma
Beta

SR-90

Solid

Thickness
Gauge

28Y

Beta

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