|Beta||Gamma||Beta range||Half Life|
|0.0772 MeV Mean energy||12.5 KeV||150 cm in air||162.67 days|
|0.2568 MeV Max energy|
The following quantities will give a dose rate of 2 mSv.hr-1 without shielding.
- If handled at distances of 10 cm or more 300 MBq
- If handled at distances of less than 10 cm 150 MBq
Note that these quantities may be handled for a maximum of 15 minutes per day, five days a week, before the dose rate to the fingers is exceeded.
Effective Dose Coefficients
|Inhalation coefficient||Ingestion coefficient||Skin dose coefficient|
|2.7 x 10-9 Sv.Bq-1 - 1μm AMAD||7.6 x 10-10 Sv.Bq-1||2.39 x 10-10 Gy.s-1 per Bq.cm-2|
If the total quantity of calcium - 45 in the laboratory is over 55 MBq*, it is necessary to classify the laboratory as a controlled area.
If the total quantity of calcium - 45 in the laboratory is over 20 MBq, it necessary to classify the laboratory as a supervised area.
*55MBq if inhaled would give rise to an effective dose of 15 mSv.