钷的同位素
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图表
符号 | Z( p ) |
N( n ) |
同位素质量(u) | 半衰期 | 衰变 方式[1][n 1] |
衰变 产物[n 2] |
原子核 自旋 |
相对丰度 (莫耳分率) |
---|---|---|---|---|---|---|---|---|
激发能量 | ||||||||
126Pm | 61 | 65 | 125.95752(54)# | 0.5# s | ||||
127Pm | 61 | 66 | 126.95163(64)# | 1# s | 5/2+# | |||
128Pm | 61 | 67 | 127.94842(43)# | 1.0(3) s | β+ | 128Nd | 6+# | |
p | 127Nd | |||||||
129Pm | 61 | 68 | 128.94316(43)# | 3# s [>200 ns] | β+ | 129Nd | 5/2+# | |
130Pm | 61 | 69 | 129.94045(32)# | 2.6(2) s | β+ | 130Nd | (5+,6+,4+) | |
β+, p (不常见) | 129Pr | |||||||
131Pm | 61 | 70 | 130.93587(21)# | 6.3(8) s | β+, p | 130Pr | 5/2+# | |
β+ | 131Nd | |||||||
132Pm | 61 | 71 | 131.93375(21)# | 6.2(6) s | β+ | 132Nd | (3+) | |
β+, p (5×10−5%) | 131Pr | |||||||
133Pm | 61 | 72 | 132.92978(5) | 15(3) s | β+ | 133Nd | (3/2+) | |
133mPm | 130.4(10) keV | 10# s | β+ | 133Nd | (11/2-) | |||
IT | 133Pm | |||||||
134Pm | 61 | 73 | 133.92835(6) | 22(1) s | β+ | 134Nd | (5+) | |
134mPm | 0(100)# keV | ~5 s | IT | 134Pm | (2+) | |||
135Pm | 61 | 74 | 134.92488(6) | 49(3) s | β+ | 135Nd | (5/2+,3/2+) | |
135mPm | 50(100)# keV | 40(3) s | β+ | 135Nd | (11/2-) | |||
136Pm | 61 | 75 | 135.92357(8) | 107(6) s | β+ | 136Nd | (5-) | |
136mPm | 130(120) keV | 47(2) s | β+ | 136Nd | (2+) | |||
137Pm | 61 | 76 | 136.920479(14) | 2# min | β+ | 137Nd | 5/2+# | |
137mPm | 150(50) keV | 2.4(1) min | β+ | 137Nd | 11/2- | |||
138Pm | 61 | 77 | 137.919548(30) | 10(2) s | β+ | 138Nd | 1+# | |
138mPm | 30(30) keV | 3.24(5) min | β+ | 138Nd | 5-# | |||
139Pm | 61 | 78 | 138.916804(14) | 4.15(5) min | β+ | 139Nd | (5/2)+ | |
139mPm | 188.7(3) keV | 180(20) ms | IT (99.83%) | 139Pm | (11/2)- | |||
β+ (.17%) | 139Nd | |||||||
140Pm | 61 | 79 | 139.91604(4) | 9.2(2) s | β+ | 140Nd | 1+ | |
140mPm | 420(40) keV | 5.95(5) min | β+ | 140Nd | 8- | |||
141Pm | 61 | 80 | 140.913555(15) | 20.90(5) min | β+ | 141Nd | 5/2+ | |
141m1Pm | 628.40(10) keV | 630(20) ns | 11/2- | |||||
141m2Pm | 2530.9(5) keV | >2 µs | ||||||
142Pm | 61 | 81 | 141.912874(27) | 40.5(5) s | β+ | 142Nd | 1+ | |
142mPm | 883.17(16) keV | 2.0(2) ms | IT | 142Pm | (8)- | |||
143Pm | 61 | 82 | 142.910933(4) | 265(7) d | β+ | 143Nd | 5/2+ | |
144Pm | 61 | 83 | 143.912591(3) | 363(14) d | β+ | 144Nd | 5- | |
144m1Pm | 840.90(5) keV | 780(200) ns | (9)+ | |||||
144m2Pm | 8595.8(22) keV | ~2.7 µs | (27+) | |||||
145Pm | 61 | 84 | 144.912749(3) | 17.7(4) a | ε | 145Nd | 5/2+ | |
α (2.8×10−7%) | 141Pr | |||||||
146Pm | 61 | 85 | 145.914696(5) | 5.53(5) a | ε (66%) | 146Nd | 3- | |
β− (34%) | 146Sm | |||||||
147Pm[n 3] | 61 | 86 | 146.9151385(26) | 2.6234(2) a | β− | 147Sm | 7/2+ | 痕量[n 4] |
148Pm | 61 | 87 | 147.917475(7) | 5.368(2) d | β− | 148Sm | 1- | |
148mPm | 137.9(3) keV | 41.29(11) d | β− (95%) | 148Sm | 5-,6- | |||
IT (5%) | 148Pm | |||||||
149Pm[n 3] | 61 | 88 | 148.918334(4) | 53.08(5) h | β− | 149Sm | 7/2+ | |
149mPm | 240.214(7) keV | 35(3) µs | 11/2- | |||||
150Pm | 61 | 89 | 149.920984(22) | 2.68(2) h | β− | 150Sm | (1-) | |
151Pm[n 3] | 61 | 90 | 150.921207(6) | 28.40(4) h | β− | 151Sm | 5/2+ | |
152Pm | 61 | 91 | 151.923497(28) | 4.12(8) min | β− | 152Sm | 1+ | |
152m1Pm | 140(90) keV | 7.52(8) min | 4- | |||||
152m2Pm | 250(150)# keV | 13.8(2) min | (8) | |||||
153Pm | 61 | 92 | 152.924117(12) | 5.25(2) min | β− | 153Sm | 5/2- | |
154Pm | 61 | 93 | 153.92646(5) | 1.73(10) min | β− | 154Sm | (0,1) | |
154mPm | 120(120) keV | 2.68(7) min | β− | 154Sm | (3,4) | |||
155Pm | 61 | 94 | 154.92810(3) | 41.5(2) s | β− | 155Sm | (5/2-) | |
156Pm | 61 | 95 | 155.93106(4) | 26.70(10) s | β− | 156Sm | 4- | |
157Pm | 61 | 96 | 156.93304(12) | 10.56(10) s | β− | 157Sm | (5/2-) | |
158Pm | 61 | 97 | 157.93656(14) | 4.8(5) s | β− | 158Sm | ||
159Pm | 61 | 98 | 158.93897(21)# | +0.43 −0.42 s 1.648[2] |
β− | 159Sm | 5/2−# | |
160Pm | 61 | 99 | 159.94299(32)# | +16 −12 ms 874[2] |
β− | 160Sm | ||
161Pm | 61 | 100 | 160.94586(54)# | +20 −12 ms 724[2] |
β− (98.91%) | 161Sm | 5/2−# | |
β−, n (1.09%) | 160Sm | |||||||
162Pm | 61 | 101 | 161.95029(75)# | +38 −18 ms 467[2] |
β− (98.21%) | 162Sm | ||
β−, n (1.79%) | 161Sm | |||||||
163Pm | 61 | 102 | 162.95368(86)# | +42 −30 ms 362[2] |
β− (95%) | 163Sm | 5/2−# | |
β−, n (1.79%) | 162Sm | |||||||
164Pm | 61 | 103 | +38 −33 ms 280[2] |
β− (93.82%) | 164Sm | |||
β−, n (6.18%) | 163Sm | |||||||
165Pm | 61 | 104 | +111 −101 ms 297[2] |
β− (86.74%) | 165Sm | |||
β−, n (13.26%) | 164Sm | |||||||
166Pm | 61 | 105 | +131 −112 ms 228[2] |
β− | 166Sm | |||
β−, n | 165Sm |
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 | → |
钕的同位素 | 钷的同位素 | 钐的同位素 |
注释
- ^ 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 - ^ 稳定同位素以粗体显示,半衰期超过宇宙年龄的同位素以粗斜体显示
- ^ 3.0 3.1 3.2 裂变产物
- ^ 裂变产物,也是151Eu的衰变产物
参考文献
- ^ Universal Nuclide Chart. nucleonica. [2015-09-20]. (原始内容存档于2017-02-19).
- ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Kiss, G. G.; Vitéz-Sveiczer, A.; Saito, Y.; et al. Measuring the β-decay properties of neutron-rich exotic Pm, Sm, Eu, and Gd isotopes to constrain the nucleosynthesis yields in the rare-earth region. The Astrophysical Journal. 2022, 936 (107): 107. Bibcode:2022ApJ...936..107K. doi:10.3847/1538-4357/ac80fc .
- 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).
- 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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