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钴的同位素

主要的钴同位素
同位素 衰变
丰度 半衰期 (t1/2) 方式 能量
MeV
产物
56Co 人造 77.236  β+ 3.544 56Fe
57Co 人造 271.811  ε 0.836 57Fe
58Co 人造 70.844  ε 2.308 58Fe
β+ 1.286 58Fe
59Co 100% 稳定,带32粒中子
60Co 人造 5.2714  β 2.823 60Ni
标准原子质量英语Standard atomic weight (Ar, 标准)
  • 58.933194(3)[1]
←Fe26 Ni28

原子量:58.933194(3))共有40个同位素,其中有1个是稳定的。

图表

[编辑]
符号 Z N 同位素质量(u
[n 1][n 2]
半衰期
[n 1][n 2]
衰变
方式
[2]
衰变
产物

[n 3]
原子核
自旋[n 1]
相对丰度
莫耳分率)[n 2]
激发能量[n 1][n 2]
47Co 27 20 47.01149(54)# 7/2−#
48Co 27 21 48.00176(43)# p 47Fe 6+#
49Co 27 22 48.98972(28)# <35 ns p (>99.9%) 48Fe 7/2−#
β+ (<.1%) 49Fe
50Co 27 23 49.98154(18)# 44(4) ms β+, p (54%) 49Mn (6+)
β+ (46%) 50Fe
51Co 27 24 50.97072(16)# 60# ms [>200 ns] β+ 51Fe 7/2−#
52Co 27 25 51.96359(7)# 115(23) ms β+ 52Fe (6+)
52mCo 380(100)# keV 104(11)# ms β+ 52Fe 2+#
IT 52Co
53Co 27 26 52.954219(19) 242(8) ms β+ 53Fe 7/2−#
53mCo 3197(29) keV 247(12) ms β+ (98.5%) 53Fe (19/2−)
p (1.5%) 52Fe
54Co 27 27 53.9484596(8) 193.28(7) ms β+ 54Fe 0+
54mCo 197.4(5) keV 1.48(2) min β+ 54Fe (7)+
55Co 27 28 54.9419990(8) 17.53(3) h β+ 55Fe 7/2−
56Co 27 29 55.9398393(23) 77.233(27) d β+ 56Fe 4+
57Co 27 30 56.9362914(8) 271.74(6) d ε 57Fe 7/2−
58Co 27 31 57.9357528(13) 70.86(6) d β+ 58Fe 2+
58m1Co 24.95(6) keV 9.04(11) h IT 58Co 5+
58m2Co 53.15(7) keV 10.4(3) µs 4+
59
Co
27 32 58.9331950(7) 稳定 7/2− 1.0000
60
Co
27 33 59.9338171(7) 5.2713(8) y β, γ 60Ni 5+
60mCo 58.59(1) keV 10.467(6) min IT (99.76%) 60Co 2+
β (.24%) 60Ni
61Co 27 34 60.9324758(10) 1.650(5) h β 61Ni 7/2−
62Co 27 35 61.934051(21) 1.50(4) min β 62Ni 2+
62mCo 22(5) keV 13.91(5) min β (99%) 62Ni 5+
IT (1%) 62Co
63Co 27 36 62.933612(21) 26.9(4) s β 63Ni 7/2−
64Co 27 37 63.935810(21) 0.30(3) s β 64Ni 1+
65Co 27 38 64.936478(14) 1.20(6) s β 65Ni (7/2)−
66Co 27 39 65.93976(27) 0.18(1) s β 66Ni (3+)
66m1Co 175(3) keV 1.21(1) µs (5+)
66m2Co 642(5) keV >100 µs (8-)
67Co 27 40 66.94089(34) 0.425(20) s β 67Ni (7/2−)#
68Co 27 41 67.94487(34) 0.199(21) s β 68Ni (7-)
68mCo 150(150)# keV 1.6(3) s (3+)
69Co 27 42 68.94632(36) 227(13) ms β (>99.9%) 69Ni 7/2−#
β, n (<.1%) 68Ni
70Co 27 43 69.9510(9) 119(6) ms β (>99.9%) 70Ni (6-)
β, n (<.1%) 69Ni
70mCo 200(200)# keV 500(180) ms (3+)
71Co 27 44 70.9529(9) 97(2) ms β (>99.9%) 71Ni 7/2−#
β, n (<.1%) 70Ni
72Co 27 45 71.95781(64)# 62(3) ms β (>99.9%) 72Ni (6-,7-)
β, n (<.1%) 71Ni
73Co 27 46 72.96024(75)# 41(4) ms 7/2−#
74Co 27 47 73.96538(86)# 50# ms [>300 ns] 0+
75Co 27 48 74.96833(86)# 40# ms [>300 ns] 7/2−#
  1. ^ 1.0 1.1 1.2 1.3 画上#号的数据代表没有经过实验的证明,仅为理论推测。
  2. ^ 2.0 2.1 2.2 2.3 用括号括起来的数据代表不确定性。
  3. ^ 稳定的衰变产物以粗体表示。
同位素列表
铁的同位素 钴的同位素 镍的同位素

参考文献

[编辑]
  1. ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. Standard atomic weights of the elements 2021 (IUPAC Technical Report). Pure and Applied Chemistry. 2022-05-04. ISSN 1365-3075. doi:10.1515/pac-2019-0603 (英语). 
  2. ^ Universal Nuclide Chart需要免费注册. nucleonica. [2015-09-13]. (原始内容存档于2017-02-19). 
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钴的同位素
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