IRON - 59
|Physical Half-life: ||44.5 days
466 (53%), 273 (45%) & 131 (1.4%) keV
Gamma 1291 (44%), 1099(56%), 192 (3%) & 142 (1%) keV
|External Exposure:||External hazard. Radiation dose
from 1 mCi of 59Fe is 64 mR/hr from gamma and 5100
mRads/hr from ß at 10 cm away.
||ALI ||0.8 mCi (ingestion), 0.3 mCi (inhalation)|
||Lower Large Intestine (ingestion)|
Spleen and Lungs
||Urinalysis (within 1st 24 hours)|
Whole Body Counting
||HVL 1.01 cm of lead; TVL 3.36 cm of
(Shielding of betas is accomplished while shielding
|LSC (Eff. ~60%)
- Use forceps with rubber sleeves to handle unshielded sources and
potentially contaminated vessels, and work at arms length.
- Near a 59Fe source, beta radiation doses can be much
higher than the gamma dose.
- Shielding the high energy gamma radiation with lead will also stop
all of the ß's and Bremstralung radiation.
- Always store 59Fe vials in lead containers or behind
- Wear a radiation badge when handling 1.0 mCi or more.