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

 Y-88 106.65 d ec, b+ / ph 3.30E-09 1.30E-09 0.380 40 0.2 1.E-01 2.00E+06 3.00E+0330

Y-90 64.10 h  1.70E-09 2.70E-09 0.007 1000 1.6 1.E+03 4.00E+06 5.00E+033

Y-90m 3.19 h it,  / ph 1.30E-10 1.70E-10 0.098 200 0.2 1.E+01 [1] 5.00E+07 6.00E+04 30  Y-90 Y-91 58.51 d  / ph 6.10E-09 2.40E-09 0.001 1000 1.6 1.E+02 1.00E+06 1.00E+033

Y-91m 49.71 min it / ph 1.50E-11 1.10E-11 0.082 70 0.1 1.E+02 [1] 4.00E+08 6.00E+05 100  Y-91 Y-92 3.54 h  / ph 2.80E-10 4.90E-10 0.546 1000 1.7 1.E+02 2.00E+07 3.00E+043

Y-93 10.18 h  / ph 6.00E-10 1.20E-09 0.098 1000 1.6 1.E+02 1.00E+07 1.00E+04 3  Zr-93 Y-94 18.7 min  / ph 4.60E-11 8.10E-11 1.111 900 1.7 1.E+01 [1] 1.00E+08 2.00E+053

Y-95 10.3 min ^/ ph 2.60E-11 4.60E-11 1.219 1000 1.7 1.E+01 [1] 2.00E+08 3.00E+05 3  Zr-95 [6] Zr-86 16.5 h ec, ^/ ph 7.00E-10 8.60E-10 0.069 100 0.1 1.E+01 [2] 9.00E+06 1.00E+04 100  Y-86 [6] Zr-88 83.4 d ec / ph 4.10E-09 3.30E-10 0.076 50 0.1 1.E+00 1.00E+06 2.00E+03 100  Y-88 [6]

Zr-89 78.41 h ec,  / ph 7.50E-10 7.90E-10 0.182 400 0.5 1.E+01 [1] 8.00E+06 1.00E+0410

Zr-93 1.53 E6 a ^2.90E-08 2.80E-10 <0.001 <1 <0.1 1.E+01 2.00E+05 3.00E+02 1000  Nb-93m Zr-95 64.032 d ^/ ph 4.20E-09 8.80E-10 0.112 1000 1.1 1.E+00 [2] 1.00E+06 2.00E+03 3  Nb-95 [6] Zr-97 16.744 h ^/ ph 1.40E-09 2.10E-09 0.027 1000 1.6 1.E+01 [2] 4.00E+06 6.00E+03 3  Nb-97

Nb-88 14.5 min ec,  / ph 5.00E-11 6.30E-11 0.719 1000 1.8 1.E+01 [1] 1.00E+08 2.00E+05 3  Zr-88 Nb-89 2.03 h ec,  / ph 1.90E-10 3.00E-10 0.392 700 1.3 1.E+01 [1] 3.00E+07 4.00E+04 3  Zr-89 Nb-89m 66 min ec,  / ph 1.20E-10 1.40E-10 0.306 900 1.5 1.E+01 [1] 5.00E+07 7.00E+04 3  Zr-89 Nb-90 14.60 h ec,  / ph 1.10E-09 1.20E-09 0.574 2000 1.9 1.E+01 [1] 5.00E+06 8.00E+033

Nb-91 680 a ec,  / ph 1.E+02 1.00E+06 2.00E+031000

Nb-91m 60.86 d it, ec,  / ph 1.E+01 3.00E+06 4.00E+03300

Nb-92m 10.15 d ec,  / ph 1.E+01 1.00E+07 1.00E+04300

Nb-93m 16.13 a it / ph 8.60E-10 1.20E-10 0.003 <1 <0.1 1.E+01 7.00E+06 1.00E+041000

Nb-94 2.03 E4  / ph 2.50E-08 1.70E-09 0.237 1000 1.5 1.E-01 2.00E+05 3.00E+023

Nb-95 34.991 d  / ph 1.30E-09 5.80E-10 0.116 100 0.3 1.E+00 5.00E+06 6.00E+0330

Nb-95m 3.61 d it, ^/ ph 8.50E-10 5.60E-10 0.021 2000 1.4 1.E+02 7.00E+06 1.00E+04 3  Nb-95 [6]

Nb-96 23.35 h  / ph 9.70E-10 1.10E-09 0.372 1000 1.6 1.E+00 6.00E+06 9.00E+033

Nb-97 72.1 min  / ph 7.20E-11 6.80E-11 0.099 1000 1.6 1.E+01 [1] 8.00E+07 1.00E+053

Nb-98m 51.3 min  / ph 9.90E-11 1.10E-10 0.393 1000 1.8 1.E+01 [1] 6.00E+07 8.00E+043