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鍶 原子質量單位 :87.62(1) )共有39個同位素 ，其中有4個同位素是穩定的。
圖表
符號
Z(p )
N(n )
質量 (原子質量單位 )半衰期 原子核 自旋 相對豐度
相對豐度的變化率
激發能量
73 Sr38
35
72.96597(64)#
>25 ms
1/2-#
74 Sr38
36
73.95631(54)#
50# ms [>1.5 µs]
0+
75 Sr38
37
74.94995(24)
88(3) ms
(3/2-)
76 Sr38
38
75.94177(4)
7.89(7) s
0+
77 Sr38
39
76.937945(10)
9.0(2) s
5/2+
78 Sr38
40
77.932180(8)
159(8) s
0+
79 Sr38
41
78.929708(9)
2.25(10) min
3/2(-)
80 Sr38
42
79.924521(7)
106.3(15) min
0+
81 Sr38
43
80.923212(7)
22.3(4) min
1/2-
82 Sr38
44
81.918402(6)
25.36(3) d
0+
83 Sr38
45
82.917557(11)
32.41(3) h
7/2+
83m Sr259.15(9) keV
4.95(12) s
1/2-
84 Sr38
46
83.913425(3)
穩定
0+
0.0056(1)
0.0055-0.0058
85 Sr38
47
84.912933(3)
64.853(8) d
9/2+
85m Sr238.66(6) keV
67.63(4) min
1/2-
86 Sr38
48
85.9092602(12)
穩定
0+
0.0986(1)
0.0975-0.0999
86m Sr2955.68(21) keV
455(7) ns
8+
87 Sr38
49
86.9088771(12)
穩定
9/2+
0.0700(1)
0.0694-0.0714
87m Sr388.533(3) keV
2.815(12) h
1/2-
88 Sr38
50
87.9056121(12)
穩定
0+
0.8258(1)
0.8229-0.8275
89 Sr38
51
88.9074507(12)
50.57(3) d
5/2+
90 Sr38
52
89.907738(3)
28.90(3) a
0+
91 Sr38
53
90.910203(5)
9.63(5) h
5/2+
92 Sr38
54
91.911038(4)
2.66(4) h
0+
93 Sr38
55
92.914026(8)
7.423(24) min
5/2+
94 Sr38
56
93.915361(8)
75.3(2) s
0+
95 Sr38
57
94.919359(8)
23.90(14) s
1/2+
96 Sr38
58
95.921697(29)
1.07(1) s
0+
97 Sr38
59
96.926153(21)
429(5) ms
1/2+
97m 1 Sr308.13(11) keV
170(10) ns
(7/2)+
97m 2 Sr830.8(2) keV
255(10) ns
(11/2-)#
98 Sr38
60
97.928453(28)
0.653(2) s
0+
99 Sr38
61
98.93324(9)
0.269(1) s
3/2+
100 Sr38
62
99.93535(14)
202(3) ms
0+
101 Sr38
63
100.94052(13)
118(3) ms
(5/2-)
102 Sr38
64
101.94302(12)
69(6) ms
0+
103 Sr38
65
102.94895(54)#
50# ms [>300 ns]
104 Sr38
66
103.95233(75)#
30# ms [>300 ns]
0+
105 Sr38
67
104.95858(75)#
20# ms [>300 ns]
備註: 畫上#號的數據代表沒有經過實驗的証明，只是理論推測而已，而用括號括起來的代表數據不確定性。
m
参考文献
Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) .
Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties , Nuc. Phys. A 729, pp. 3-128 (2003).
National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition , online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.
