氖的同位素
氖（原子量：20.1797(6)）共有19個已知同位素，質量數介於15-34之間，其中有3個是穩定的，其他都具有放射性。天然存在的氖同位素有3個，分別是20Ne、21Ne、22Ne，皆為穩定同位素。其他放射性同位素都不出現在自然界中，只有在實驗室製造出來過，且半衰期都極短，非常不穩定。
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| 標準原子質量 (Ar, 標準) |
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圖表
| 符號 | Z | N | 同位素質量（u） [n 1][n 2] | 半衰期 [n 1][n 2] | 衰變 方式[2] | 衰變 產物 [n 3] | 原子核 自旋[n 1] | 相對豐度 （莫耳分率）[n 2] | 相對豐度 的變化量 （莫耳分率） |
|---|---|---|---|---|---|---|---|---|---|
| 15Ne[3] | 10 | 5 | 15.04317(7) | 7.7(3)×10−22 s [0.59(23)− 2.522(60) MeV] | 2p | 13O | (3/2−) | ||
| 16Ne | 10 | 6 | 16.025761(22) | 9×10−21 s [122(37) keV] | 2p | 14O | 0+ | ||
| 17Ne[n 4] | 10 | 7 | 17.017672(29) | 109.2(6) ms | β+, p (96.0%) | 16O | 1/2– | ||
| β+, α (2.7%) | 13N | ||||||||
| β+ (1.3%) | 17F | ||||||||
| 18Ne | 10 | 8 | 18.0057082(3) | 1.672(8) s | β+ | 18F | 0+ | ||
| 2p | 16O | ||||||||
| 2He[n 5][4] | 16O, 2He | ||||||||
| 19Ne | 10 | 9 | 19.0018802(3) | 17.296(5) s+ | β+ | 19F | 1/2+ | ||
| 20 Ne | 10 | 10 | 19.9924401754(19) | 稳定 | 0+ | 0.9048(3) | 0.8847–0.9051 | ||
| 21Ne | 10 | 11 | 20.99384668(4) | 穩定 | 3/2+ | 0.0027(1) | 0.0027–0.0171 | ||
| 22Ne | 10 | 12 | 21.991385114(19) | 穩定 | 0+ | 0.0925(3) | 0.0920–0.0996 | ||
| 23Ne | 10 | 13 | 22.99446690(11) | 37.24(12) s | β− | 23Na | 5/2+ | ||
| 24Ne | 10 | 14 | 23.9936108(4) | 3.38(2) min | β− | 24Na | 0+ | ||
| 25Ne | 10 | 15 | 24.997737(28) | 602(8) ms | β− | 25Na | (3/2)+ | ||
| 26Ne | 10 | 16 | 26.000461(29) | 197(1) ms | β− (99.87%) | 26Na | 0+ | ||
| β−, n (.13%) | 25Na | ||||||||
| 27Ne | 10 | 17 | 27.00759(12) | 32(2) ms | β− (98.0%) | 27Na | (3/2+)# | ||
| β−, n (2.0%) | 26Na | ||||||||
| 28Ne | 10 | 18 | 28.01207(16) | 18.3(22) ms | β− (78.0%) | 28Na | 0+ | ||
| β−, n (22.0%) | 27Na | ||||||||
| 29Ne | 10 | 19 | 29.01939(29) | 15.6(5) ms | β− | 29Na | (3/2+)# | ||
| 30Ne | 10 | 20 | 30.02480(61) | 5.8(2) ms | β− | 30Na | 0+ | ||
| 31Ne | 10 | 21 | 31.03311(97)# | 3.4(8) ms | β− | 31Na | 7/2−# | ||
| β−, n | 30Na | ||||||||
| 32Ne | 10 | 22 | 32.04002(86)# | 3.5(9) ms | β−, n | 31Na | 0+ | ||
| β− | 32Na | ||||||||
| 33Ne | 10 | 23 | 33.04938(86)# | <260 ns | 7/2−# | ||||
| 34Ne | 10 | 24 | 34.05703(87)# | 1# ms [>1.5 µs] | 0+ | ||||
| ← | 同位素列表 | → |
| 氟的同位素 | 氖的同位素 | 鈉的同位素 |
參考文獻
- 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.