Beam maser measurements of hyperfine structure in 14N2O
Beam maser measurements of hyperfine structure in 14N2O
复制标题
14N2O 中超精细结构的光束脉泽测量
DOI：
10.1063/1.430854
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发表时间：
1975
影响因子：
4.4
通讯作者：
S. Kukolich
中科院分区：
文献类型：
--
作者：
K. Casleton;S. Kukolich
用分子束脉泽谱仪对14N2O分子J=1→0转动跃迁的超精细结构进行了高分辨测量。由两个氮核的四极相互作用产生的所有七个超精细组分都得到了完全解析。这使得可以确定四极耦合常数以及两个自旋-旋转常数。最佳最小二乘拟合参数值分别为：(Eqq)End=−776.7±1.0kHz，(EqQ)Central=−269.4±1.8kHz，Mend=−2.35±0.20kHz，MCentral=−2.90±0.26kHz。自旋旋转常数被用来计算这两个氮核位的磁屏蔽参数。1→0的转动跃迁频率为25 123 246千赫。
High resolution measurements of hyperfine structure on the J = 1 → 0 rotational transitions in 14N2O were made with a molecular beam maser spectrometer. All seven hyperfine components arising from quadrupole interactions by two nitrogen nuclei were completely resolved. This permitted determination of both quadrupole coupling constants as well as the two spin–rotation constants. Values of the best least‐squares fit parameters are (eqQ)end = −776.7±1.0 kHz, (eqQ)central = −269.4±1.8 kHz, Mend = −2.35±0.20 kHz, and Mcentral = −2.90±0.26 kHz. The spin–rotation constants are used to calculate magnetic shielding parameters for the two nitrogen nuclear sites. The 1 → 0 rotational transition frequency is 25 123 246 kHz.