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Simbolul izotopului
|
Z(p)
|
N(n)
|
Masa izotopului(u)
|
timp de înjumătățire
|
energia de excitare a izotopului
|
206Ac
|
89
|
117
|
206.01450(8)
|
25(7) ms
|
206m1Ac
|
80(50) keV
|
15(6) ms
|
206m2Ac
|
290(110)# keV
|
41(16) ms
|
207Ac
|
89
|
118
|
207.01195(6)
|
31(8) ms [27(+11-6) ms]
|
208Ac
|
89
|
119
|
208.01155(6)
|
97(16) ms [95(+24-16) ms]
|
208mAc
|
506(26) keV
|
28(7) ms [25(+9-5) ms]
|
209Ac
|
89
|
120
|
209.00949(5)
|
92(11) ms
|
210Ac
|
89
|
121
|
210.00944(6)
|
350(40) ms
|
211Ac
|
89
|
122
|
211.00773(8)
|
213(25) ms
|
212Ac
|
89
|
123
|
212.00781(7)
|
920(50) ms
|
213Ac
|
89
|
124
|
213.00661(6)
|
731(17) ms
|
214Ac
|
89
|
125
|
214.006902(24)
|
8.2(2) s
|
215Ac
|
89
|
126
|
215.006454(23)
|
0.17(1) s
|
216Ac
|
89
|
127
|
216.008720(29)
|
0.440(16) ms
|
216mAc
|
44(7) keV
|
443(7) µs
|
217Ac
|
89
|
128
|
217.009347(14)
|
69(4) ns
|
217mAc
|
2012(20) keV
|
740(40) ns
|
218Ac
|
89
|
129
|
218.01164(5)
|
1.08(9) µs
|
218mAc
|
584(50)# keV
|
103(11) ns
|
219Ac
|
89
|
130
|
219.01242(5)
|
11.8(15) µs
|
220Ac
|
89
|
131
|
220.014763(16)
|
26.36(19) ms
|
221Ac
|
89
|
132
|
221.01559(5)
|
52(2) ms
|
222Ac
|
89
|
133
|
222.017844(6)
|
5.0(5) s
|
222mAc
|
200(150)# keV
|
1.05(7) min
|
223Ac
|
89
|
134
|
223.019137(8)
|
2.10(5) min
|
224Ac
|
89
|
135
|
224.021723(4)
|
2.78(17) h
|
225Ac
|
89
|
136
|
225.023230(5)
|
10.0(1) d
|
226Ac
|
89
|
137
|
226.026098(4)
|
29.37(12) h
|
227Ac
|
89
|
138
|
227.0277521(26)
|
21.772(3) a
|
228Ac
|
89
|
139
|
228.0310211(27)
|
6.15(2) h
|
229Ac
|
89
|
140
|
229.03302(4)
|
62.7(5) min
|
230Ac
|
89
|
141
|
230.03629(32)
|
122(3) s
|
231Ac
|
89
|
142
|
231.03856(11)
|
7.5(1) min
|
232Ac
|
89
|
143
|
232.04203(11)
|
119(5) s
|
233Ac
|
89
|
144
|
233.04455(32)#
|
145(10) s
|
234Ac
|
89
|
145
|
234.04842(43)#
|
44(7) s
|
235Ac
|
89
|
146
|
235.05123(38)#
|
40# s
|
236Ac
|
89
|
147
|
236.05530(54)#
|
2# min
|