氫-5

氫-5是氫的一個人造放射性同位素，極為不穩定。它的原子核包含了四個中子和一個質子，在實驗室裡用一個氚的原子核來轟炸氚^[3]^[4]，這讓氚吸收氚原子核的两个中子而形成了氫-5。氫-5的半衰期非常短，只有6977859999999999999♠86±6 ys（6977859999999999999♠(8.6±0.6)×10⁻²³ s）——为所有核素中最短。^[2]

參見编辑

^ ^1.0 ^1.1 ^1.2 Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. The AME 2020 atomic mass evaluation (II). Tables, graphs and references. Chinese Physics C. 2021, 45 (3): 030003. doi:10.1088/1674-1137/abddaf.
^ ^2.0 ^2.1 ^2.2 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. The NUBASE2020 evaluation of nuclear properties (PDF). Chinese Physics C. 2021, 45 (3): 030001. doi:10.1088/1674-1137/abddae.
^ G. M. Ter-Akopian; et al. Hydrogen-4 and Hydrogen-5 from t+t and t+d transfer reactions studied with a 57.5-MeV triton beam. AIP Conference Proceedings. 2002, 610: 920–924. Bibcode:2002AIPC..610..920T. doi:10.1063/1.1470062.
^ A. A. Korsheninnikov; et al. Superheavy Hydrogen ⁵H. Physical Review Letters. 2001, 87 (9): 92501. Bibcode:2001PhRvL..87i2501K. PMID 11531562. doi:10.1103/PhysRevLett.87.092501.