Rotation dependence of electric quadrupole hyperfine interaction in the ground state of molecular iodine by high-resolution laser spectroscopy
Rotation dependence of electric quadrupole hyperfine interaction in the ground state of molecular iodine by high-resolution laser spectroscopy
复制标题
高分辨率激光光谱研究碘分子基态电四极超精细相互作用的旋转依赖性
DOI：
10.1364/josab.18.000379
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发表时间：
2001
影响因子：
1.9
通讯作者：
J. Hall
中科院分区：
文献类型：
--
作者：
F. Hong;Jun Ye;Longsheng Ma;S. Picard;C. Bordé;J. Hall
采用无多普勒高分辨光谱技术，在532 nm波长下，利用激光对分子碘进行了测量。通过外差泵浦两个I2稳定的激光器，测量了R(56)32-0和P(54)32-0跃迁的主要超精细组分和交叉线。测量的包括主线和交叉线的超精细分裂被拟合为四项哈密顿量，其中包括电四极相互作用、自旋-旋转相互作用、张量自旋-自旋相互作用和标量自旋-自旋相互作用，平均偏差为∼1 kHz。得到了上态和下态的电四极超精细常数的绝对值。发现基态(v“=0)电四极常数eQq”与转动的关系为eQq″(J)=-2452.556(2)-0.000164(5)J(J+1)-0.000000005(2)J2(J+1)2/MHz。
Doppler-free high-resolution spectroscopy is applied to molecular iodine at 532 nm by Nd:YAG lasers. The main hyperfine components as well as the crossover lines are measured for R(56)32-0 and P(54)32-0 transitions by heterodyne beating of two I2-stabilized lasers. The measured hyperfine splittings including both main and crossover lines are fitted to a four-term Hamiltonian, which includes the electric quadrupole, spin–rotation, tensor spin–spin, and scalar spin–spin interactions, with an average deviation of ∼1 kHz. Absolute values of the electric quadrupole hyperfine constants for both the upper and the lower states are obtained. The rotation dependence of the ground-state (v″=0) electric quadrupole constant eQq″ is found to be eQq″(J)=-2452.556(2)-0.000164(5)J(J+1)-0.000000005(2)J2(J+1)2 MHz.