铒的同位素
铒(原子量:167.259(3))的同位素,其中有6個同位素是在觀測上穩定的。
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標準原子質量 (Ar, 標準) |
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圖表
符號 | Z( p ) |
N( n ) |
同位素質量(u) | 半衰期[n 1] | 衰變 方式[2][n 2] |
衰變 產物[n 3] |
原子核 自旋 |
相對豐度 (莫耳分率) |
相對豐度 的變化量 (莫耳分率) |
---|---|---|---|---|---|---|---|---|---|
激發能量 | |||||||||
142Er | 68 | 74 | 141.97002(54)# | 10# μs | p | 141Ho | 0+ | ||
143Er | 68 | 75 | 142.96655(43)# | 200# ms | β+ | 143Ho | 9/2−# | ||
β+, p | 142Dy | ||||||||
144Er | 68 | 76 | 143.96038(43)# | 400# ms [>200 ns] | β+ | 144Ho | 0+ | ||
145Er | 68 | 77 | 144.95739(43)# | 900(300) ms | β+ | 145Ho | 1/2+# | ||
β+, p (不常見) | 144Dy | ||||||||
146Er | 68 | 78 | 145.95200(32)# | 1.7(6) s | β+ | 146Ho | 0+ | ||
β+, p | 145Dy | ||||||||
147Er | 68 | 79 | 146.94949(32)# | ~2.5 s | β+ | 147Ho | (1/2+) | ||
β+, p | 146Dy | ||||||||
147mEr | 100(50)# keV | 2.5(2) s | β+ | 147Ho | (11/2-) | ||||
148Er | 68 | 80 | 147.94455(21)# | 4.6(2) s | β+ (99.85%) | 148Ho | 0+ | ||
β+, p (.15%) | 147Dy | ||||||||
149Er | 68 | 81 | 148.94231(3) | 4(2) s | β+ (93%) | 149Ho | (1/2+) | ||
β+, p (7%) | 148Dy | ||||||||
149m1Er | 741.8(2) keV | 8.9(2) s | β+ (96.5%) | 149Ho | (11/2-) | ||||
IT (3.5%) | 149Er | ||||||||
β+, p (.18%) | 148Dy | ||||||||
149m2Er | 2611.1(3) keV | 0.61(8) µs | (19/2+) | ||||||
149m3Er | 3242.7+X keV | 4.8(1) µs | (27/2-) | ||||||
150Er | 68 | 82 | 149.937914(18) | 18.5(7) s | β+ | 150Ho | 0+ | ||
151Er | 68 | 83 | 150.937449(18) | 23.5(13) s | β+ | 151Ho | (7/2-) | ||
151m1Er | 2585.5(6) keV | 580(20) ms | IT (95.3%) | 151Er | (27/2-) | ||||
β+ (4.7%) | 151Ho | ||||||||
151m2Er | 10286+X keV | 0.42(5) µs | (67/2,69/2,71/2) | ||||||
152Er | 68 | 84 | 151.935050(11) | 10.3(1) s | α (90%) | 148Dy | 0+ | ||
β+ (10%) | 152Ho | ||||||||
153Er | 68 | 85 | 152.935063(9) | 37.1(2) s | α (53%) | 149Dy | 7/2(-) | ||
β+ (47%) | 153Ho | ||||||||
154Er | 68 | 86 | 153.932783(6) | 3.73(9) min | β+ (99.53%) | 154Ho | 0+ | ||
α (.47%) | 150Dy | ||||||||
155Er | 68 | 87 | 154.933209(7) | 5.3(3) min | β+ (99.98%) | 155Ho | 7/2- | ||
α (.022%) | 151Dy | ||||||||
156Er | 68 | 88 | 155.931065(26) | 19.5(10) min | β+ | 156Ho | 0+ | ||
157Er | 68 | 89 | 156.93192(3) | 18.65(10) min | β+ | 157Ho | 3/2- | ||
157mEr | 155.4(3) keV | 76(6) ms | IT | 157Er | (9/2+) | ||||
158Er | 68 | 90 | 157.929893(27) | 2.29(6) h | ε | 158Ho | 0+ | ||
159Er | 68 | 91 | 158.930684(5) | 36(1) min | β+ | 159Ho | 3/2- | ||
159m1Er | 182.602(24) keV | 337(14) ns | 9/2+ | ||||||
159m2Er | 429.05(3) keV | 590(60) ns | 11/2- | ||||||
160Er | 68 | 92 | 159.929083(26) | 28.58(9) h | ε | 160Ho | 0+ | ||
161Er | 68 | 93 | 160.929995(10) | 3.21(3) h | β+ | 161Ho | 3/2- | ||
161mEr | 396.44(4) keV | 7.5(7) µs | 11/2- | ||||||
162Er | 68 | 94 | 161.928778(4) | 觀測上穩定[n 4] | 0+ | 0.00139(5) | |||
163Er | 68 | 95 | 162.930033(6) | 75.0(4) min | β+ | 163Ho | 5/2- | ||
163mEr | 445.5(6) keV | 580(100) ns | (11/2-) | ||||||
164Er | 68 | 96 | 163.929200(3) | 觀測上穩定[n 5] | 0+ | 0.01601(3) | |||
165Er | 68 | 97 | 164.930726(3) | 10.36(4) h | ε | 165Ho | 5/2- | ||
166Er | 68 | 98 | 165.9302931(27) | 觀測上穩定[n 6] | 0+ | 0.33503(36) | |||
167Er | 68 | 99 | 166.9320482(27) | 觀測上穩定[n 7] | 7/2+ | 0.22869(9) | |||
167mEr | 207.801(5) keV | 2.269(6) s | IT | 167Er | 1/2- | ||||
168Er | 68 | 100 | 167.9323702(27) | 觀測上穩定[n 8] | 0+ | 0.26978(18) | |||
169Er | 68 | 101 | 168.9345904(27) | 9.392(18) d | β− | 169Tm | 1/2- | ||
170Er | 68 | 102 | 169.9354643(30) | 觀測上穩定[n 9] | 0+ | 0.14910(36) | |||
171Er | 68 | 103 | 170.9380298(30) | 7.516(2) h | β− | 171Tm | 5/2- | ||
171mEr | 198.6(1) keV | 210(10) ns | 1/2- | ||||||
172Er | 68 | 104 | 171.939356(5) | 49.3(3) h | β− | 172Tm | 0+ | ||
173Er | 68 | 105 | 172.94240(21)# | 1.434(17) min | β− | 173Tm | (7/2-) | ||
174Er | 68 | 106 | 173.94423(32)# | 3.2(2) min | β− | 174Tm | 0+ | ||
175Er | 68 | 107 | 174.94777(43)# | 1.2(3) min | β− | 175Tm | (9/2+) | ||
176Er | 68 | 108 | 175.95008(43)# | 20# s | β− | 176Tm | 0+ | ||
177Er | 68 | 109 | 176.95405(54)# | 3# s | β− | 177Tm | 1/2-# |
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 | → |
鈥的同位素 | 铒的同位素 | 銩的同位素 |
註釋
- Bold for isotopes with half-lives longer than the age of the universe (nearly stable)
- Abbreviations:
ε: Electron capture
IT: Isomeric transition - Bold for stable isotopes, bold italics for nearly stable isotopes (half-life longer than the age of the universe)
- Believed to undergo α decay to 158Dy or β+β+ to 162Dy with a half-life over 140×1012 years
- Believed to undergo α decay to 160Dy or β+β+ to 164Dy
- Believed to undergo α decay to 162Dy
- Believed to undergo α decay to 163Dy
- Believed to undergo α decay to 164Dy
- Believed to undergo α decay to 166Dy or β−β− to 170Yb with a half-life over 320×1015 years
参考文獻
- Meija, Juris; et al. . Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- . [2015-09-20]. (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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