通知: ·2018年11月23日-25日 第四届...    ·181102 Koch教授学术报告    ·181026 林丰利教授学术报告    ·181025 周泽兵教授学术报告    ·181019 林凯教授学术报告   




  2014年 (15)
  2013年 (8)
  2012年 (11)

发表论文 您的位置是: 首页 > 科学研究 > 研究成果 > 发表论文 > 正文


2018 Ultraviolet laser spectroscopy of aluminum atoms in hollow-cathode lamp

发布时间:2018-11-06          来源:           浏览次数:

Ultraviolet laser spectroscopy of aluminum atoms in hollow-cathode lamp

, , , , , and

, ,

We report on the precision measurement of aluminum atoms ${}^{2}{P}_{1/2}-{}^{2}{S}_{1/2}$ transition at 394 nm and ${}^{2}{P}_{3/2}-{}^{2}{S}_{1/2}$ transition at 396 nm in a hollow-cathode lamp. Both absorption and saturated absorption spectra are measured. From the absorption spectra, the Doppler linewidth is estimated to be 2.65 GHz. The saturated absorption spectra are analyzed based on a velocity-changing collisions model. With a frequency comb calibrated wavemeter, the frequencies of ${}^{2}{P}_{1/2}(F^{\prime} =3)-{}^{2}{S}_{1/2}(F=2)$ transition and ${}^{2}{P}_{3/2}(F^{\prime} =4)-{}^{2}{S}_{1/2}(F=3)$ transition are measured to be 759.905 204(1) THz and 756.547 133(3) THz, respectively. The hyperfine coupling constants of aluminum atoms are determined, and are compared with previously reported measurement results and theoretical calculation results. Reasonable agreement is found for the magnetic dipole constant (A constant), while the electric quadrupole constant (B constant) has a large deviation.


上一篇:2018 Multilayer densities using a wavelet-based gravity method and their tectonic implications beneath the Tibetan Plateau
下一篇:2018 Identification and compensation of quadratic terms of a space electrostatic accelerometer

Copyright (C) 华中科技大学引力中心 地址:湖北省武汉市洪山区珞喻路1037号 邮编:430074