RE: [fluka-discuss]: What is really happening when requesting Cf-252 decay?
Dear Sebastien
I was looking at pending questions in the list and here is a follow-up of your post from a couple of weeks ago.
Emission of alphas and spontaneous fission is not treated when using Cf-252 as a source. Also for some reason it seems that for A > 245 flair considers the entry as invalid in the HI-PROPE card as you are pointing out (even though FLUKA runs fine). I am speculating but this limit may rather come from ion transports for which the HI-PROPE card is used to specify the charge and mass of the transported ions.
Otherwise I ran a case similar to the one you ran but simpler (source in vacuum). I score an electron and photon spectrum and besides the peak of Tl-208 I could see many other peaks in the PHOTON spectrum (239 keV Pb-212, 338 keV/463 keV/583 keV... Ac-228, 554 keV Np-240m....) below 1 MeV. For the electron spectrum, I have a continuous beta- spectrum with an endpoint around 2.250 MeV which seems to correspond to Bi-212. There are two discrete electron at ~2.520 MeV and ~2.590 MeV which I could not correlate anything looking quickly (but the branching ratio seems low....). Thus I would conclude that photon and beta emission of the decay products seems to be produced from the spectra I have observed.
Hoping this help
Greetings
Joachim
Decay modes:
Alpha Diso: 0 BR: 96.910% Qval: 6.2168
SpontFiss Diso: 0 BR: 3.090% Qval: 207
=== Chain with 96.91 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248
=== Chain with 88.9052 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244
=== Chain with 88.7985 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240
=== Chain with 88.7985 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212
=== Chain with 88.7009 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212
=== Chain with 56.8094 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (64.046% BetaMinus) T1/2=3630
84-Po-212
=== Chain with 56.8094 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (64.046% BetaMinus) T1/2=3630
84-Po-212 (100% Alpha) T1/2=2.99e-07
82-Pb-208
=== Chain with 0.0124181 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (0.014% BetaMinus+Alpha) T1/2=3630
82-Pb-208
=== Chain with 31.8791 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (35.94% Alpha) T1/2=3630
81-Tl-208
=== Chain with 31.8791 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (99.89% BetaMinus) T1/2=433
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (35.94% Alpha) T1/2=3630
81-Tl-208 (100% BetaMinus) T1/2=183
82-Pb-208
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212
=== Chain with 0.0976784 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212
=== Chain with 0.0625591 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (64.046% BetaMinus) T1/2=3630
84-Po-212
=== Chain with 0.0625591 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (64.046% BetaMinus) T1/2=3630
84-Po-212 (100% Alpha) T1/2=2.99e-07
82-Pb-208
=== Chain with 0.0351056 %
98-Cf-252 (96.91% Alpha) T1/2=8.34e+07
96-Cm-248 (91.74% Alpha) T1/2=1.07e+13
94-Pu-244 (99.88% Alpha) T1/2=2.55e+15
92-U-240 (100% BetaMinus) T1/2=50800
93-Np-240m (0.11% IsoTrans) T1/2=433
93-Np-240 (100% BetaMinus) T1/2=3710
94-Pu-240 (100% Alpha) T1/2=2.07e+11
92-U-236 (100% Alpha) T1/2=7.39e+14
90-Th-232 (100% Alpha) T1/2=4.43e+17
88-Ra-228 (100% BetaMinus) T1/2=1.81e+08
89-Ac-228 (100% BetaMinus) T1/2=22100
90-Th-228 (100% Alpha) T1/2=6.03e+07
88-Ra-224 (100% Alpha) T1/2=316000
86-Rn-220 (100% Alpha) T1/2=55.6
84-Po-216 (100% Alpha) T1/2=0.145
82-Pb-212 (100% BetaMinus) T1/2=38300
83-Bi-212 (35.94% Alpha) T1/2=3630
81-Tl-208 (100% BetaMinus) T1/2=183
82-Pb-208
-----Original Message-----
From: owner-fluka-discuss_at_mi.infn.it [mailto:owner-fluka-discuss_at_mi.infn.it] On Behalf Of wurth
Sent: 02 June 2014 14:29
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: What is really happening when requesting Cf-252 decay?
Dear Fluka users and developers,
I’m interested in Cf-252 photon external exposure.
One way I tried to: by activating fluka decay semi-analogue mode and defining Cf-252 as a source with BEAM card and SDUM=ISOTOPE.
First, Flair does not like very much my HI-PROPE value for A (= 252.
(invalid input value)), but FLUKA runs anyway (with Z = 98. & A = 252.
in HI-PROPE are recognized in the echo output in *.out).
Did a simple setup, cylindrical isotropic source in Teflon vessel, nothing complicated (files attached if needed).
And I got results, some decay scheme is clearly simulated ; it seems to work just fine, but… I’m not sure what is really calculated here and I was hoping that someone could share some wisdom on that matter.
I know that so far decay mode doesn’t involve alpha and fission products decays, only beta + and – decays with associated photon emissions.
So the first non alpha emitter daughter of Cf-252 chain is U-240 (after
3 alpha decays) which is beta – emitter, this goes on by various decays till joining Th-232 decay chain.
When I score photon fluence in a usrtrack card in a region containing my source I got a peak at ~ 2614.5 keV which is a known peak from Tl-208 related to Thorium.
Thanks in advance for any hint, comment.
Cheers.
Sebastien.
Received on Mon Jun 23 2014 - 19:46:19 CEST
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: Mon Jun 23 2014 - 19:46:20 CEST