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

用高精度激光光谱测量了铍同位素包括中子晕核Be-11的2s^2S&lt；1/2&gt；-2p^2p&lt；3/2&gt；绝对频率，并用频率梳进行了激光频率标定。根据结果，系统地测定了Be同位素的电荷半径Be^+-7，9，10，11，精确度小于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%.