钕的同位素
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标准原子质量 (Ar, 标准) |
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钕(原子质量单位: 144.242(3))的同位素,其中有1个稳定同位素和4个观测上稳定同位素。
图表[编辑]
符号 | Z( p ) |
N( n ) |
同位素质量(u) | 半衰期 | 衰变 方式[2][n 1] |
衰变 产物[n 2] |
原子核 自旋 |
相对丰度 (莫耳分率) |
相对丰度 的变化量 (莫耳分率) |
---|---|---|---|---|---|---|---|---|---|
激发能量 | |||||||||
124Nd | 60 | 64 | 123.95223(64)# | 500# ms | 0+ | ||||
125Nd | 60 | 65 | 124.94888(43)# | 600(150) ms | 5/2(+#) | ||||
126Nd | 60 | 66 | 125.94322(43)# | 1# s [>200 ns] | β+ | 126Pr | 0+ | ||
127Nd | 60 | 67 | 126.94050(43)# | 1.8(4) s | β+ | 127Pr | 5/2+# | ||
β+, p (不常见) | 126Ce | ||||||||
128Nd | 60 | 68 | 127.93539(21)# | 5# s | β+ | 128Pr | 0+ | ||
β+, p (不常见) | 127Ce | ||||||||
129Nd | 60 | 69 | 128.93319(22)# | 4.9(2) s | β+ | 129Pr | 5/2+# | ||
β+, p (不常见) | 128Ce | ||||||||
130Nd | 60 | 70 | 129.92851(3) | 21(3) s | β+ | 130Pr | 0+ | ||
131Nd | 60 | 71 | 130.92725(3) | 33(3) s | β+ | 131Pr | (5/2)(+#) | ||
β+, p (不常见) | 130Ce | ||||||||
132Nd | 60 | 72 | 131.923321(26) | 1.56(10) min | β+ | 132Pr | 0+ | ||
133Nd | 60 | 73 | 132.92235(5) | 70(10) s | β+ | 133Pr | (7/2+) | ||
133m1Nd | 127.97(11) keV | ~70 s | β+ | 133Pr | (1/2)+ | ||||
133m2Nd | 176.10(10) keV | ~300 ns | (9/2-) | ||||||
134Nd | 60 | 74 | 133.918790(13) | 8.5(15) min | β+ | 134Pr | 0+ | ||
134mNd | 2293.1(4) keV | 410(30) µs | (8)- | ||||||
135Nd | 60 | 75 | 134.918181(21) | 12.4(6) min | β+ | 135Pr | 9/2(-) | ||
135mNd | 65.0(2) keV | 5.5(5) min | β+ | 135Pr | (1/2+) | ||||
136Nd | 60 | 76 | 135.914976(13) | 50.65(33) min | β+ | 136Pr | 0+ | ||
137Nd | 60 | 77 | 136.914567(12) | 38.5(15) min | β+ | 137Pr | 1/2+ | ||
137mNd | 519.43(17) keV | 1.60(15) s | IT | 137Nd | (11/2-) | ||||
138Nd | 60 | 78 | 137.911950(13) | 5.04(9) h | β+ | 138Pr | 0+ | ||
138mNd | 3174.9(4) keV | 410(50) ns | (10+) | ||||||
139Nd | 60 | 79 | 138.911978(28) | 29.7(5) min | β+ | 139Pr | 3/2+ | ||
139m1Nd | 231.15(5) keV | 5.50(20) h | β+ (88.2%) | 139Pr | 11/2- | ||||
IT (11.8%) | 139Nd | ||||||||
139m2Nd | 2570.9+X keV | ≥141 ns | |||||||
140Nd | 60 | 80 | 139.90955(3) | 3.37(2) d | ε | 140Pr | 0+ | ||
140mNd | 2221.4(1) keV | 600(50) µs | 7- | ||||||
141Nd | 60 | 81 | 140.909610(4) | 2.49(3) h | β+ | 141Pr | 3/2+ | ||
141mNd | 756.51(5) keV | 62.0(8) s | IT (99.95%) | 141Nd | 11/2- | ||||
β+ (.05%) | 141Pr | ||||||||
142Nd | 60 | 82 | 141.9077233(25) | 稳定 | 0+ | 0.272(5) | 0.2680-0.2730 | ||
143Nd[n 3][n 4] | 60 | 83 | 142.9098143(25) | 观测上稳定[n 5] | 7/2- | 0.122(2) | 0.1212-0.1232 | ||
144Nd[n 3][n 6] | 60 | 84 | 143.9100873(25) | 2.29(16)×1015 a | α | 140Ce | 0+ | 0.238(3) | 0.2379-0.2397 |
145Nd[n 3] | 60 | 85 | 144.9125736(25) | 观测上稳定[n 7] | 7/2- | 0.083(1) | 0.0823-0.0835 | ||
146Nd[n 3] | 60 | 86 | 145.9131169(25) | 观测上稳定[n 8] | 0+ | 0.172(3) | 0.1706-0.1735 | ||
147Nd[n 3] | 60 | 87 | 146.9161004(25) | 10.98(1) d | β− | 147Pm | 5/2- | ||
148Nd[n 3] | 60 | 88 | 147.916893(3) | 观测上稳定[n 9] | 0+ | 0.057(1) | 0.0566-0.0578 | ||
149Nd[n 3] | 60 | 89 | 148.920149(3) | 1.728(1) h | β− | 149Pm | 5/2- | ||
150Nd[n 3][n 6] | 60 | 90 | 149.920891(3) | 6.7(7)×1018 a | β−β− | 150Sm | 0+ | 0.056(2) | 0.0553-0.0569 |
151Nd | 60 | 91 | 150.923829(3) | 12.44(7) min | β− | 151Pm | 3/2+ | ||
152Nd | 60 | 92 | 151.924682(26) | 11.4(2) min | β− | 152Pm | 0+ | ||
153Nd | 60 | 93 | 152.927698(29) | 31.6(10) s | β− | 153Pm | (3/2)- | ||
154Nd | 60 | 94 | 153.92948(12) | 25.9(2) s | β− | 154Pm | 0+ | ||
154m1Nd | 480(150)# keV | 1.3(5) µs | |||||||
154m2Nd | 1349(10) keV | >1 µs | (5-) | ||||||
155Nd | 60 | 95 | 154.93293(16)# | 8.9(2) s | β− | 155Pm | 3/2-# | ||
156Nd | 60 | 96 | 155.93502(22) | 5.49(7) s | β− | 156Pm | 0+ | ||
156mNd | 1432(5) keV | 135 ns | 5- | ||||||
157Nd | 60 | 97 | 156.93903(21)# | 2# s [>300 ns] | β− | 157Pm | 5/2-# | ||
158Nd | 60 | 98 | 157.94160(43)# | 700# ms [>300 ns] | β− | 158Pm | 0+ | ||
159Nd | 60 | 99 | 158.94609(54)# | 500# ms | β− | 159Pm | 7/2+# | ||
160Nd | 60 | 100 | 159.94909(64)# | 300# ms | β− | 160Pm | 0+ | ||
161Nd | 60 | 101 | 160.95388(75)# | 200# ms | β− | 161Pm | 1/2-# |
备注:画上#号的数据代表没有经过实验的证明,只是理论推测而已,而用括号括起来的代表数据不确定性。
← | 同位素列表 | → |
镨的同位素 | 钕的同位素 | 钷的同位素 |
注释[编辑]
- ^ 缩写的涵义:
ε: 电子俘获
IT: 核异构转变
β+:正电子发射
β−:贝他衰变 - ^ 稳定的衰变产物以粗体表示。
- ^ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 裂变产物
- ^ 用于钐钕测年法
- ^ 被认为会α衰变成139Ce
- ^ 6.0 6.1 原始放射性同位素
- ^ 被认为会α衰变成141Ce,半衰期超过6×1016年
- ^ 被认为会α衰变成142Ce
- ^ 被认为会α衰变成144Ce,半衰期超过3.0×1018年
参考文献[编辑]
- ^ Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- ^ Universal Nuclide Chart. nucleonica. [2015-09-19]. (原始内容存档于2017-02-19).
- 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) (页面存档备份,存于互联网档案馆). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) (页面存档备份,存于互联网档案馆).
- 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 (页面存档备份,存于互联网档案馆), Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (页面存档备份,存于互联网档案馆) (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.
元素与同位素的稳定度 | |||||||||||||||||||||||||||||||||
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