Transient products may be missing from a number of decay chains. The list below shows cases where the daughter given in the data table has more than one step in the decay chain.
Cases where the daughter is marked with "t" and granddaughter with "b" are already supported, so they are not included in the list. Those with multiple decay paths to the same target are also not listed (for example, 86Rb (ε) 86Kr (2β⁻) 86Sr and 86Rb (β⁻) 86Sr as shown on periodictable.com).
The individual reactions need to be reviewed. The granddaughter product may already have been accumulated by another row in the data table. In that case the activation at t=0 and post irradiation decay will be approximately correct for long times.
11B (act ) 12B -> 8Be -> 4He [rare?]
23Na (act ) 24mNa (20 ms ) 24Na (15 h ) 14Mg [98.4% branch]
26Mg (2n ) 28Mg (20.9 h) 28Al (2.25 m) 18Si
30Si (2n ) 32Si (153 y ) 32P (14 d ) 32S
37Cl (act ) 38m+Cl (715 ms) 38Cl (27.2 m) 38Ar
40Ar (2n ) 42Ar (32.9 y) 42K (12.5 h) 42Ca [also 41K (2n,p) 42Ar and 44Ca (2n,a) 42Ar]
46Ca (act ) 47*Ca (4.5 d ) 47Sc (3.35 d) 47Ti [also 48Ca (n,2n) 47*Ca and 50Ti (n, a) 47*Ca]
50Cr (n,2n) 49Cr (42.3 m) 49V (330 d ) 49Ti
54Fe (n,2n) 53Mn (8.5 m ) 53Mn (3.7 My) 53Cr
58Ni (n,p ) 58m+Co (9.1 h ) 58Co (20.9 d) 58Fe
59Co (act ) 60m+Co (10.5 m) 60Co (1925 d) 60Ni [also 60Ni (n,p) 60m+Co]
58Ni (n,2n) 57Ni (65.6 h) 57Co (271 d ) 57Fe
65Cu (2n ) 66sNi (54.6 h) 66Cu (5.12 m) 66Zn [also 68Zn (2n,a) 66sNi]
68Zn (act ) 69msZn (13.8 h) 69Zn (56.4 m) 69Ga [also 69Ga (n,p) 69msZn and 72Ge (n,a) 69msZn]
71Ga (act ) 72m+Ga (40 ms ) 72Ga (14.1 h) 72Ge
76Ge (act ) 77Ge (11.2 h) 77As (38.8 h) 77Se
76Ge (act ) 77m+Ge (53.7 s) 77As (38.8 h) 77Se
76Ge (2n ) 78sGe (88 m) 78As (90.7 m) 78Se
78Se (act ) 79mSe (3.9 m) 79Se (0.33 My)79Br [also 80Se (n,2n) 79m+Se]
82Se (act ) 83m+Se (70 s) 83Br (2.4 h) 83Kr [82Se (act) 83tSe (2.4 h) 83Br (2.4 h) 83Kr is already supported]
79Br (act ) 80m*Br (4.4 h) 80Br (17.7 m) 80Kr 91.7% / 80Se 8.3%
81Br (act ) 82m+Br (6.1 m) 82Br (35.3 h) 82Kr
78Kr (act ) 79m+Kr (50 s) 79Kr (35 h) 79Br
80Kr (act ) 81m+Kr (13.1 s) 81Kr (.21 My) 81Br
86Kr (act ) 87Kr (76.3 m) 87Rb (50 Gy) 87Sr
86Kr (2n ) 88Kr (2.8 h) 88Rb (17.8 m) 88Sr
85Rb (act ) 86m+Rb (1 m) 86Rb (18.6 d) 86Sr
87Rb (2n ) 89*Rb (15.3 m) 89Sr (50.6 d) 89Y
... only checked up to Sr so far (40%)...
85m+Sr -> 85Sr -> 85Rb
90Sr -> 90Y -> 90Zr
Notation on reaction product name:
- m, m1, m2 indicate metastable states. Decay may be the ground state or another nuclide.
- + indicates radioactive daughter production already included in daughter listing several parent t1/2's required to acheive calculated daughter activity. All activations are assigned at end of irradiation. In most cases the added activity to the daughter is small.
- * indicates radioactive daughter production NOT calculated, approx secular equilibrium.
- s indicates radioactive daughter of this nuclide in secular equilibrium after several daughter t1/2's.
- t indicates transient equilibrium via beta decay. Accumulation of that nuclide during irradiation is separately calculated.
Transient products may be missing from a number of decay chains. The list below shows cases where the daughter given in the data table has more than one step in the decay chain.
Cases where the daughter is marked with "t" and granddaughter with "b" are already supported, so they are not included in the list. Those with multiple decay paths to the same target are also not listed (for example, 86Rb (ε) 86Kr (2β⁻) 86Sr and 86Rb (β⁻) 86Sr as shown on periodictable.com).
The individual reactions need to be reviewed. The granddaughter product may already have been accumulated by another row in the data table. In that case the activation at t=0 and post irradiation decay will be approximately correct for long times.
Notation on reaction product name: