14Be的晕
核实验
2007-05-23 v1
摘要
在C和Pb靶上以35 MeV/核子能量发生的 dissociation 中，通过碎片（12Be和中子）的运动学完整测量，研究了双中子晕核14Be。观测到了具有晕特征的双中子移除截面、中子角分布和不变质量谱，并推断了电磁（EMD）贡献。与三体模型预测的比较表明，晕波函数包含大的2s1/2^2混合。EMD不变质量谱在阈值附近表现出相对较窄的结构（E_decay=1.8±0.1 MeV，Γ=0.8±0.4 MeV），与软偶极激发一致。
关键词
引用
@article{arxiv.nucl-ex/0006003,
title = {The Halo of 14Be},
author = {M. Labiche and N. A. Orr and F. M. Marques and J. C. Angelique and L. Axelsson and B. Benoit and U. C. Bergmann and M. J. G. Borge and W. N. Catford and S. P. G. Chappell and N. M. Clarke and G. Costa and N. Curtis and A. D'Arrigo and E. de Goes Brennand and O. Dorvaux and G. Fazio and M. Freer and B. R. Fulton and G. Giardina and S. Grevy and D. Guillemaud-Mueller and F. Hanappe and B. Heusch K. L. Jones and B. Jonson and C. Le Brun and S. Leenhardt and M. Lewitowicz and M. J. Lopez and K. Markenroth and A. C. Mueller and T. Nilsson and A. Ninane and G. Nyman and F. de Oliveira and I. Piqueras and K. Riisager and M. G. Saint Laurent and F. Sarazin and S. M. Singer and O. Sorlin and L. Stuttge},
journal= {arXiv preprint arXiv:nucl-ex/0006003},
year = {2007}
}
备注
17 pages, 3 figures