Avamprogetti

Grandezze di apprezzamento Livello di Livello di licenza Vincoli

esenzione

Radionuclide Tempo di Tipo di decadi- einh eing h10 h0,07 hc0,07 LL LA CA CS Nuclide figlio instabile

dimezzamento mento e di Sv/Bq Sv/Bq (mSv/h)/ (mSv/h)/GBq (mSv/h)/ Bq/g Bq Bq/m3 Bq/cm2

radiazione GBq a 1 m a 10 cm di (kBq/cm2)

di distanza distanza

1 2  4 5 6 7 8 9 10 11 1213

 Pr-139 4.41 h ec, / ph 3.00E-11 3.10E-11 0.028 100 0.1 1.E+02 [1] 2.00E+08 3.00E+05 100  Ce-139 Pr-142 19.12 h , ec / ph 7.40E-10 1.30E-09 0.011 1000 1.6 1.E+02 8.00E+06 1.00E+043

Pr-142m 14.6 min it / ph 9.40E-12 1.70E-11 <0.001 <1 <0.1 1.E+07 [1] 6.00E+08 9.00E+05 1000  Pr-142 Pr-143 13.57 d  2.20E-09 1.20E-09 0.000 1000 1.5 1.E+03 3.00E+06 4.00E+033

Pr-144 17.28 min  / ph 3.00E-11 5.00E-11 0.099 1000 1.6 1.E+02 [1] 2.00E+08 3.00E+053

Pr-145 5.984 h  / ph 2.60E-10 3.90E-10 0.002 1000 1.6 1.E+03 2.00E+07 3.00E+043

Nd-136 50.65 min ec, ^/ ph 8.90E-11 9.90E-11 0.061 200 0.3 1.E+02 [1] 7.00E+07 9.00E+04 30  Pr-136 [6]

Pr-147 13.4 min  / ph 3.00E-11 3.30E-11 0.144 1000 1.8 1.E+01 [1] 2.00E+08 3.00E+05 3  Nd-147 Nd-138 / Pr-138 5.04 h ec / ph 3.80E-10 6.40E-10 0.398 700 1.3 1.E+03 [2] 2.00E+07 2.00E+043

Nd-139 29.7 min ec,  / ph 1.70E-11 2.00E-11 0.070 300 0.4 1.E+02 [1] 4.00E+08 5.00E+05 10  Pr-139 Nd-139m 5.50 h ec, , it / ph 2.50E-10 2.50E-10 0.246 500 0.6 1.E+01 [1] 2.00E+07 3.00E+04 10  Pr-139, Nd-139 Nd-140 3.37 d ec / ph 1.E+04 [2] 3.00E+06 4.00E+03100

Nd-141 2.49 h ec,  / ph 8.80E-12 8.30E-12 0.021 50 0.1 1.E+02 [1] 7.00E+08 9.00E+05100

Nd-147 10.98 d ^/ ph 2.10E-09 1.10E-09 0.027 1000 1.5 1.E+02 3.00E+06 4.00E+03 3  Pm-147 Nd-149 1.728 h ^/ ph 1.30E-10 1.20E-10 0.063 2000 1.8 1.E+02 [1] 5.00E+07 6.00E+04 3  Pm-149

Nd-151 12.44 min  / ph 2.90E-11 3.00E-11 0.137 1000 1.7 1.E+01 [1] 2.00E+08 3.00E+05 3  Pm-151  Nd-141, Nd- Pm-141 20.90 min ec,  / ph 2.50E-11 3.60E-11 0.137 500 0.9 1.E+01 [1] 2.00E+08 3.00E+05 10 141m Pm-143 265 d ec / ph 9.60E-10 2.30E-10 0.057 7 <0.1 1.E+00 6.00E+06 9.00E+031000

Pm-144 363 d ec / ph 5.40E-09 9.70E-10 0.248 40 0.1 1.E-01 1.00E+06 2.00E+03100

Pm-145 17.7 a ec, α / ph 2.40E-09 1.10E-10 0.013 10 <0.1 1.E+01 3.00E+06 3.00E+031000

Pm-146 5.53 a ec,  / ph 1.30E-08 9.00E-10 0.122 500 0.6 1.E-01 5.00E+05 6.00E+02 10  Sm-146 Pm-147 2.6234 a  3.50E-09 2.60E-10 <0.001 500 0.6 1.E+03 2.00E+06 2.00E+03 10  Sm-147 Pm-148 5.368 d  / ph 2.20E-09 2.70E-09 0.091 1000 1.6 1.E+01 3.00E+06 4.00E+033

Pm-148m 41.29 d , it / ph 4.30E-09 1.80E-09 0.306 1000 1.4 1.E+00 1.00E+06 2.00E+03 3  Sm-148 Pm-149 53.08 h  / ph 8.20E-10 9.90E-10 0.002 1000 1.6 1.E+03 7.00E+06 1.00E+043

Pm-150 2.68 h  / ph 2.10E-10 2.60E-10 0.226 1000 1.8 1.E+01 [1] 3.00E+07 4.00E+043

Pm-151 28.40 h ^/ ph 6.40E-10 7.30E-10 0.052 1000 1.5 1.E+01 9.00E+06 1.00E+04 3  Sm-151 Sm-141 10.2 min ec, ^/ ph 2.70E-11 3.90E-11 0.287 500 1 1.E+01 [1] 2.00E+08 3.00E+05 10  Pm-141 [6]