Charge radii measurements for beryllium isotopes by precision laser spectroscopy using a frequency comb

用高精度激光光谱法测量了含中子晕核Be-11的铍同位素2s^2S_<1/2>-2p^2P_<3/2>跃迁的绝对频率，激光频率梳定标。根据结果，系统地测定了Be同位素Be^+- 7,9,10,11的电荷半径，精度小于2%。

The absolute frequency of 2s^2S_<1/2>-2p^2P_<3/2> transition for beryllium isotopes including the neutron halo nucleus Be-11 was measured by high precision laser spectroscopy with the laser frequency calibration by a frequency comb. From the results, the charge radii for Be isotopes, Be^+-7, 9, 10, 11, was systematically determined with accuracies less than 2%.