𨨏的同位素
𨨏(107Bh)是一种人造元素。和其它人造元素一样,𨨏没有稳定同位素。第一个被人工合成的𨨏同位素是1981年合成的262Bh。目前一共发现了11种𨨏的同位素和1个同核异构体,其中最稳定的是半衰期2.4分钟的270Bh,但未确认的278Bh可能会有更长的11.5分钟半衰期。
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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[3][n 1] |
衰變 產物 |
原子核 自旋 |
---|---|---|---|---|---|---|---|
激發能量 | |||||||
260Bh | 107 | 153 | 260.12166(26)# | 41(14) ms | α | 256Db | |
261Bh | 107 | 154 | 261.12146(22)# | 12.8(3.2) ms | α (95%?) | 257Db | (5/2−) |
SF (5%?) | (various) | ||||||
262Bh | 107 | 155 | 262.12297(33)# | 84(11) ms | α (80%) | 258Db | |
SF (20%) | (various) | ||||||
262mBh | 220(50) keV | 9.5(1.6) ms | α (70%) | 258Db | |||
SF (30%) | (various) | ||||||
264Bh[n 2] | 107 | 157 | 264.12459(19)# | 1.07(21) s | α (86%) | 260Db | |
SF (14%) | (various) | ||||||
265Bh | 107 | 158 | 265.12491(25)# | 1.19(52) s | α | 261Db | |
266Bh[n 3] | 107 | 159 | 266.12679(18)# | 2.5(1.6) s | α | 262Db | |
267Bh | 107 | 160 | 267.12750(28)# | 22(10) s [17(+14−6) s] |
α | 263Db | |
270Bh[n 4] | 107 | 163 | 270.13336(31)# | 3.8(3.0) min | α | 266Db | |
271Bh[n 5] | 107 | 164 | 271.13526(48)# | 1.5 s | α | 267Db | |
272Bh[n 6] | 107 | 165 | 272.13826(58)# | 8.8(2.1) s | α | 268Db | |
274Bh[n 7] | 107 | 167 | 274.14355(65)# | 0.9 min[4] | α | 270Db |
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 | → |
𨭎的同位素 | 𨨏的同位素 | 𨭆的同位素 |
註釋 编辑
- ^ Abbreviations:
SF: Spontaneous fission - ^ Not directly synthesized, occurs in decay chain of 272Rg
- ^ Not directly synthesized, occurs in decay chain of 278Nh
- ^ Not directly synthesized, occurs in decay chain of 282Nh
- ^ Not directly synthesized, occurs in decay chain of 287Mc
- ^ Not directly synthesized, occurs in decay chain of 288Mc
- ^ Not directly synthesized, occurs in decay chain of 294Ts
参考文獻 编辑
- ^ Oganessian, Yu. Ts.; Utyonkov, V. K.; Kovrizhnykh, N. D.; et al. New isotope 286Mc produced in the 243Am+48Ca reaction. Physical Review C. 2022, 106 (64306). Bibcode:2022PhRvC.106f4306O. doi:10.1103/PhysRevC.106.064306.
- ^ Oganessian, Yuri Ts.; Abdullin, F. Sh.; Bailey, P. D.; et al. Synthesis of a New Element with Atomic Number Z=117. Physical Review Letters (American Physical Society). 2010-04-09, 104 (142502) [2018-01-30]. Bibcode:2010PhRvL.104n2502O. PMID 20481935. doi:10.1103/PhysRevLett.104.142502. (原始内容存档于2016-10-18).(来源中给出274Bh的寿命是1.3分钟,乘以ln(2)即可得到半衰期)
- ^ Universal Nuclide Chart . nucleonica. [2012-08-06]. (原始内容存档于2017-02-19).
- ^ Oganessian, Yu. Ts.; Abdullin, F. Sh.; Bailey, P. D.; Benker, D. E.; Bennett, M. E.; Dmitriev, S. N.; Ezold, J. G.; Hamilton, J. H.; et al. Synthesis of a New Element with Atomic Number Z=117. Physical Review Letters. 2010, 104 (14): 142502. Bibcode:2010PhRvL.104n2502O. PMID 20481935. doi:10.1103/PhysRevLett.104.142502.
- 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.