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Phosphorus 32

Beta Max Beta Range Half Life
0.694 MeV Mean energy 720 cm in air 14.263 days
1.711 MeV Max energy

In Use

The following quantities will give a dose rate of 2 mSv/h without shielding.

  • If handled at distances of 10 cm or more 3 MBq
  • If handled at distances of less than 10 cm 3 KBq

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
3.2 x 10-9 Sv.Bq-1 - 1μm AMAD, medium clearance time 2.4 x 10-9 Sv.Bq-1 6.55 x 10-10 Gy.s-1 per Bq.cm-2 

Classification

If the total quantity of phosphorus - 32 in the laboratory is over 5 MBq, it is necessary to classify the laboratory as a controlled area.

If the total quantity of phosphorus - 32 in the laboratory is over 2 MBq, it is necessary to classify the laboratory as a supervised area.

*5MBq if inhaled would give rise to an effective dose of 15 mSv.