论文标题
精确测定碱金属激发态的四极极化
Accurate determination of quadrupole polarizabilities of the excited states of alkali-metal atoms
论文作者
论文摘要
确定了所有碱金属原子的前两个激发态的电二极杆（E2）极化的标量和张量成分。为了验证计算，我们评估了这些原子的基态E2极化，并将其与文献值进行了比较。在文献中，我们找不到FR的基态E2极化值与我们的结果进行比较。这些数量的主要部分是通过结合许多低洼跃迁的精确计算出的E2跃迁矩阵元素与实验能量的估计的，而使用低阶方法估算了其他贡献。我们对上述原子的基态的估计值与文献值非常吻合，这表明我们对碱原子激发态的估计E2极化能力（除了LI原子以外，尚不清楚）也很准确。这些报道的E2极化能力可用于指导碱原子中的许多精确测量。
The scalar and tensor components of the electric quadrupole (E2) polarizabilities of the first two excited states of all the alkali-metal atoms are determined. To validate the calculations, we have evaluated the ground state E2 polarizabilities of these atoms and compared them with the literature values. We could not find the ground state E2 polarizability value for Fr in the literature to compare with our result. The dominant parts of these quantities are estimated by combining the precisely calculated E2 transition matrix elements of many low-lying transitions with the experimental energies, while the other contributions are estimated using lower-order methods. Our estimated values for the ground states of the above atoms are in good agreement with the literature values suggesting that our estimated E2 polarizabilities for the excited states of the alkali atoms, which were not known earlier except for the Li atom, are also quite accurate. These reported E2 polarizabilities could be useful in guiding many precision measurements in the alkali atoms.
