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钚的同位素

主要的钚同位素
同位素 衰变
丰度 半衰期 (t1/2) 方式 能量
MeV
产物
238Pu 痕量 87.7  α 5.593 234U
SF
239Pu 痕量 2.411×104  α 5.245 235U
SF
240Pu 痕量 6561  α 5.256 236U
SF
241Pu 人造 14.329  β 0.021 241Am
α 5.140 237U
242Pu 人造 3.75×105  α 4.984 238U
SF
244Pu 痕量 8.13×107  α 4.666 240U
SF
←Np93 Am95

没有稳定同位素。它最稳定的同位素是半衰期8130万年的244Pu。

图表

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

[n 3][n 4]
原子核
自旋[n 1]
相对丰度
莫耳分率)
激发能量[n 2]
228Pu 94 134 228.03874(3) 1.1(+20−5)  α (99.9%) 224U 0+
β+ (.1%) 228Np
229Pu 94 135 229.04015(6) 120(50)  α 225U 3/2+#
230Pu 94 136 230.039650(16) 1.70(17) 分钟 α 226U 0+
β+ (不常见) 230Np
231Pu 94 137 231.041101(28) 8.6(5) 分钟 β+ 231Np 3/2+#
α (不常见) 227U
232Pu 94 138 232.041187(19) 33.7(5) 分钟 ε (89%) 232Np 0+
α (11%) 228U
233Pu 94 139 233.04300(5) 20.9(4) 分钟 β+ (99.88%) 233Np 5/2+#
α (.12%) 229U
234Pu 94 140 234.043317(7) 8.8(1) 小时 ε (94%) 234Np 0+
α (6%) 230U
235Pu 94 141 235.045286(22) 25.3(5) 分钟 β+ (99.99%) 235Np (5/2+)
α (.0027%) 231U
236Pu 94 142 236.0460580(24) 2.858(8)  α 232U 0+
SF (1.37×10−7%) (various)
CD (2×10−12%) 208Pb
28Mg
237Pu 94 143 237.0484097(24) 45.2(1)  ε 237Np 7/2−
α (.0042%) 233U
237m1Pu 145.544(10)2 keV 180(20) 毫秒 IT 237Pu 1/2+
237m2Pu 2900(250) keV 1.1(1) 微秒
238
Pu
94 144 238.0495599(20) 87.7(1)  α 234U 0+ 痕量[n 5]
SF (1.9×10−7%) (various)
CD (1.4×10−14%) 206Hg
32Si
CD (6×10−15%) 180Yb
30Mg
28Mg
239
Pu
英语Plutonium-239
[n 6][n 7]
94 145 239.0521634(20) 2.411(3)×104  α 235U 1/2+ 痕量[n 8]
SF (3.1×10−10%) (various)
239m1Pu 391.584(3) keV 193(4) 纳秒 7/2−
239m2Pu 3100(200) keV 7.5(10) 微秒 (5/2+)
240
Pu
英语plutonium-240
94 146 240.0538135(20) 6,561(7)  α 236U 0+ 痕量[n 9]
SF (5.7×10−6%) (various)
CD (1.3×10−13%) 206Hg
34Si
241
Pu
英语plutonium-241
[n 6]
94 147 241.0568515(20) 14.290(6)  β (99.99%) 241Am 5/2+
α (.00245%) 237U
SF (2.4×10−14%) (various)
241m1Pu 161.6(1) keV 0.88(5) 微秒 1/2+
241m2Pu 2200(200) keV 21(3) 微秒
242
Pu
英语plutonium-242
94 148 242.0587426(20) 3.75(2)×105  α 238U 0+
SF (5.5×10−4%) (various)
243Pu[n 6] 94 149 243.062003(3) 4.956(3) 小时 β 243Am 7/2+
243mPu 383.6(4) keV 330(30) 纳秒 (1/2+)
244
Pu
英语plutonium-244
94 150 244.064204(5) 8.08×107  α (99.88%) 240U 0+ 痕量[n 10]
SF (.123%) (various)
245Pu 94 151 245.067747(15) 10.5(1) 小时 β 245Am (9/2−)
246Pu 94 152 246.070205(16) 10.84(2)  β 246mAm 0+
247Pu 94 153 247.07407(32)# 2.27(23)  β 247Am 1/2+#
  1. ^ 1.0 1.1 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 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。
  4. ^ 半衰期超过5亿年的衰变产物以粗斜体表示。
  5. ^ 238U的双β衰变产生
  6. ^ 6.0 6.1 6.2 fissile nuclide
  7. ^ Most useful isotope for nuclear weapons
  8. ^ 238U的中子捕获产生
  9. ^ 244Pu的衰变产生
  10. ^ 来自太空,是否为原始核素英语Primordial nuclide有争议
同位素列表
镎的同位素 钚的同位素 镅的同位素

参考文献

  1. ^ Universal Nuclide Chart需要免费注册. nucleonica. [2015-11-03]. (原始内容存档于2017-02-19). 
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钚的同位素
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