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Beurteilungsgrössen Freigrenze Bewilligungs- Richtwerte

grenze

Radionuklid Halbwertszeit Zerfallsart/ einh eing h10 h0,07 hc0,07 LL LA CA CS Instabiles Tochternuklid

Strahlung Sv/Bq Sv/Bq (mSv/h)/ (mSv/h)/GBq (mSv/h)/ Bq/g Bq Bq/m3 Bq/cm2

GBq in 1 min 10 cm Ab-(kBq/cm2)

Abstand stand 1 2  4 5 6 7 8 9 10 11 1213

Gd-148 74.6 a  3.00E-05 5.50E-08 <0.001 <1 <0.1 1.E+00 2.00E+02 3.00E-013

Gd-149 9.28 d ec,  / ph 7.90E-10 4.50E-10 0.076 400 0.6 1.E+01 8.00E+06 1.00E+04 10  Eu-149 Gd-151 124 d ec,  / ph 9.30E-10 2.00E-10 0.018 200 0.2 1.E+01 6.00E+06 9.00E+03 30  Sm-147 Gd-152 1.08 E14 a  2.20E-05 4.10E-08 <0.001 <1 <0.1 1.E+01 [1] 3.00E+02 4.00E-013

Gd-153 240.4 d ec / ph 2.50E-09 2.70E-10 0.029 30 0.1 1.E+01 2.00E+06 3.00E+03100

Gd-159 18.479 h  / ph 3.90E-10 4.90E-10 0.010 1000 1.5 1.E+02 2.00E+07 2.00E+043

Tb-147 1.64 h ec, ^/ ph 1.20E-10 1.60E-10 0.356 400 0.8 1.E+01 [1] 5.00E+07 7.00E+04 10  Gd-147 [6]

Tb-149 4.118 h ec, ^,  / ph 3.10E-09 2.50E-10 0.241 400 0.6 1.E-01 2.00E+06 3.00E+03 10  Gd-149, Eu-145

Tb-150 3.48 h ec, ,  / ph 1.80E-10 2.50E-10 0.346 400 0.8 1.E+01 [1] 3.00E+07 5.00E+0410

Tb-151 17.609 h ec, ,  / ph 3.30E-10 3.40E-10 0.147 400 0.6 1.E+01 2.00E+07 3.00E+04 10  Gd-151, Eu-147 Tb-153 2.34 d ec,  / ph 2.40E-10 2.50E-10 0.045 100 0.1 1.E+01 3.00E+07 3.00E+04 100  Gd-153 Tb-154 21.5 h ec,  / ph 6.00E-10 6.50E-10 0.313 400 0.6 1.E+01 [1] 1.00E+07 1.00E+0410

Tb-155 5.32 d ec / ph 2.50E-10 2.10E-10 0.031 200 0.2 1.E+02 2.00E+07 3.00E+0430

Tb-156 5.35 d ec / ph 1.40E-09 1.20E-09 0.277 500 0.8 1.E+00 4.00E+06 6.00E+0310

Tb-156m 24.4 h it / ph 2.30E-10 1.70E-10 0.007 4 <0.1 1.E+01 3.00E+07 4.00E+041000

Tb-156n 5.3 h it / ph 1.30E-10 8.10E-11 0.001 8 0.6 1.E+04 [1] 5.00E+07 6.00E+04 10  Tb-156 [6]

Tb-157 71 a ec / ph 7.90E-10 3.40E-11 0.001 6 <0.1 1.E+02 8.00E+06 1.00E+041000

Tb-158 180 a ec,  / ph 3.00E-08 1.10E-09 0.127 400 0.6 1.E-01 2.00E+05 3.00E+0210

Tb-160 72.3 d  / ph 5.40E-09 1.60E-09 0.169 1000 1.7 1.E+00 1.00E+06 2.00E+033

Tb-161 6.906 d  / ph 1.20E-09 7.20E-10 0.013 1000 1.3 1.E+03 5.00E+06 7.00E+033

Dy-155 9.9 h ec,  / ph 1.20E-10 1.30E-10 0.094 100 0.1 1.E+01 [1] 5.00E+07 7.00E+04 100  Tb-155 Dy-157 8.14 h ec / ph 5.50E-11 6.10E-11 0.065 40 0.1 1.E+02 1.00E+08 2.00E+05 100  Tb-157 Dy-159 144.4 d ec / ph 2.50E-10 1.00E-10 0.015 10 <0.1 1.E+03 2.00E+07 3.00E+041000

Dy-165 2.334 h  / ph 8.70E-11 1.10E-10 0.005 1000 1.6 1.E+03 7.00E+07 1.00E+053

Dy-166 81.6 h ^/ ph 1.80E-09 1.60E-09 0.010 1000 1.1 1.E+02 3.00E+06 5.00E+03 3  Ho-166

Ho-155 48 min ec,  / ph 3.20E-11 3.70E-11 0.066 300 0.5 1.E+02 [1] 2.00E+08 3.00E+05 10  Dy-155 Ho-157 12.6 min ec,  / ph 7.60E-12 6.50E-12 0.088 300 0.3 1.E+02 [1] 8.00E+08 1.00E+06 30  Dy-157 Ho-159 33.05 min ec,  / ph 1.00E-11 7.90E-12 0.069 200 0.2 1.E+02 [1] 6.00E+08 8.00E+05 30  Dy-159 Ho-161 2.48 h ec / ph 1.00E-11 1.30E-11 0.022 20 <0.1 1.E+02 [1] 6.00E+08 8.00E+051000

Ho-162 15.0 min ec,  / ph 4.50E-12 3.30E-12 0.032 70 0.2 1.E+02 [1] 1.00E+09 2.00E+0630

Ho-162m 67.0 min it, ec, ^/ ph 3.30E-11 2.60E-11 0.094 300 0.3 1.E+01 [1] 2.00E+08 3.00E+05 30  Ho-162