Silwal R, Lapierre A, Gillaspy J D, Dreiling J M, Blundell S A, Borovik A, Gwinner G, Villari A C C, Ralchenko Yu, Takacs E
Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USA.
National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA.
Phys Rev A (Coll Park). 2018;98. doi: 10.1103/PhysRevA.98.052502.
The difference in the mean-square nuclear charge radius of xenon isotopes was measured utilizing a method based on extreme ultraviolet spectroscopy of highly charged Na-like ions. The isotope shift of the Na-like 1 (3 - 3 ) transition between the Xe and Xe isotopes was experimentally determined using the electron-beam ion-trap facility at the National Institute of Standards and Technology. The mass-shift and the field-shift coefficients were calculated with enhanced precision by the relativistic many-body perturbation theory and multiconfiguration Dirac-Hartree-Fock method. The mean-square nuclear charge radius difference was found to be 〈 〉 = 0.269(42) fm. Our result has smaller uncertainty than previous experimental results and agrees with the literature values.
利用基于高电荷类钠离子极紫外光谱的方法，测量了氙同位素均方核电荷半径的差异。使用美国国家标准与技术研究院的电子束离子阱装置，通过实验确定了类钠Xe和Xe同位素之间1(3 - 3)跃迁的同位素位移。采用相对论多体微扰理论和多组态狄拉克-哈特里-福克方法，以更高的精度计算了质量位移和场位移系数。发现均方核电荷半径差为〈〉 = 0.269(42) fm。我们的结果比以前的实验结果具有更小的不确定性，并且与文献值一致。
