鋂的同位素
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圖表
| 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 |
原子核 自旋 |
|---|---|---|---|---|---|---|---|
| 激發能量 | |||||||
| 231Am | 95 | 136 | 231.04556(32)# | 30# s | β+ | 231Pu | |
| α （不常見） | 227Np | ||||||
| 232Am | 95 | 137 | 232.04659(32)# | 79(2) s | β+ (98%) | 232Pu | |
| α (2%) | 228Np | ||||||
| β+, SF (.069%) | (various) | ||||||
| 233Am | 95 | 138 | 233.04635(11)# | 3.2(8) min | β+ | 233Pu | |
| α | 229Np | ||||||
| 234Am | 95 | 139 | 234.04781(22)# | 2.32(8) min | β+ (99.95%) | 234Pu | |
| α (.04%) | 230Np | ||||||
| β+, SF (.0066%) | (various) | ||||||
| 235Am | 95 | 140 | 235.04795(13)# | 9.9(5) min | β+ | 235Pu | 5/2−# |
| α （不常見） | 231Np | ||||||
| 236Am | 95 | 141 | 236.04958(11)# | 3.6(1) min | β+ | 236Pu | |
| α | 232Np | ||||||
| 237Am | 95 | 142 | 237.05000(6)# | 73.0(10) min | β+ (99.97%) | 237Pu | 5/2(−) |
| α (.025%) | 233Np | ||||||
| 238Am | 95 | 143 | 238.05198(5) | 98(2) min | β+ | 238Pu | 1+ |
| α (10−4%) | 234Np | ||||||
| 238mAm | 2500(200)# keV | 35(10) µs | |||||
| 239Am | 95 | 144 | 239.0530245(26) | 11.9(1) h | ε (99.99%) | 239Pu | (5/2)− |
| α (.01%) | 235Np | ||||||
| 239mAm | 2500(200) keV | 163(12) ns | (7/2+) | ||||
| 240Am | 95 | 145 | 240.055300(15) | 50.8(3) h | β+ | 240Pu | (3−) |
| α (1.9×10−4%) | 236Np | ||||||
| 241Am[n 2] | 95 | 146 | 241.0568291(20) | 432.2(7) y | α | 237Np | 5/2− |
| CD (7.4×10−10%) | 207Tl, 34Si | ||||||
| SF (4.3×10−10%) | (various) | ||||||
| 241mAm | 2200(100) keV | 1.2(3) µs | |||||
| 242Am | 95 | 147 | 242.0595492(20) | 16.02(2) h | β− (82.7%) | 242Cm | 1− |
| ε (17.3%) | 242Pu | ||||||
| 242m1Am | 48.60(5) keV | 141(2) y | IT (99.54%) | 242Am | 5− | ||
| α (.46%) | 238Np | ||||||
| SF (1.5×10−8%) | (various) | ||||||
| 242m2Am | 2200(80) keV | 14.0(10) ms | (2+,3−) | ||||
| 243Am[n 2] | 95 | 148 | 243.0613811(25) | 7,370(40) y | α | 239Np | 5/2− |
| SF (3.7×10−9%) | (various) | ||||||
| 244Am | 95 | 149 | 244.0642848(22) | 10.1(1) h | β− | 244Cm | (6−)# |
| 244mAm | 86.1(10) keV | 26(1) min | β− (99.96%) | 244Cm | 1+ | ||
| ε (.0361%) | 244Pu | ||||||
| 245Am | 95 | 150 | 245.066452(4) | 2.05(1) h | β− | 245Cm | (5/2)+ |
| 246Am | 95 | 151 | 246.069775(20) | 39(3) min | β− | 246Cm | (7−) |
| 246m1Am | 30(10) keV | 25.0(2) min | β− (99.99%) | 246Cm | 2(−) | ||
| IT (.01%) | 246Am | ||||||
| 246m2Am | ~2000 keV | 73(10) µs | |||||
| 247Am | 95 | 152 | 247.07209(11)# | 23.0(13) min | β− | 247Cm | (5/2)# |
| 248Am | 95 | 153 | 248.07575(22)# | 3# min | β− | 248Cm | |
| 249Am | 95 | 154 | 249.07848(32)# | 1# min | β− | 249Cm | |
備註：畫上#號的數據代表沒有經過實驗的證明，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 | → |
| 鈽的同位素 | 鋂的同位素 | 鋦的同位素 |
註釋
- Abbreviations:
CD: Cluster decay
EC: Electron capture
IT: Isomeric transition
SF: Spontaneous fission - Most common isotopes
参考文獻
- . nucleonica. [2015-11-03]. （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）. Pure Appl. Chem. Vol. 75, No. 6, pp. 683–800, (2003) and Atomic Weights Revised (2005) （页面存档备份，存于）.
- 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）, 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） (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.
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