鉕的同位素
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圖表[编辑]
符號 | Z( p ) |
N( n ) |
同位素質量(u) | 半衰期 | 衰變 方式[1][n 1] |
衰變 產物[n 2] |
原子核 自旋 |
相對豐度 (莫耳分率) |
---|---|---|---|---|---|---|---|---|
激發能量 | ||||||||
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 (不常見) | 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 |
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。
← | 同位素列表 | → |
釹的同位素 | 钷的同位素 | 釤的同位素 |
註釋[编辑]
- ^ 縮寫的涵義:
ε: 电子俘获
IT: 核異構轉變
β+:正电子发射
β−:貝他衰變 - ^ 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
参考文獻[编辑]
- ^ 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.
元素與同位素的穩定度 | |||||||||||||||||||||||||||||||||
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