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Microwave spectroscopy, Dunham analysis, and hyperfine splittings of the isotopomers of zinc monosulfide, ZnS

机译:微波光谱法,邓纳姆分析和单硫化锌ZnS的同位素异构体的超细分裂

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摘要

Two rotational transitions of the first six vibrational states of three isotopomers of zinc monosulfide, ~(64)Zn~(32)S, ~(66)Zn~(32)S, and ~(68)Zn~(32)S, have been observed in cavity Fourier transform microwave (FTMW) spectroscopy. In addition, the hyperfine splitting of the ~(67)Zn~(32)S due to the nuclear quadrupole coupling constant of the I = 5/2 ~(67)Zn nucleus was observed for two rotational transitions of v = 0. The zinc sulfide was produced by laser ablation of a zinc rod with the resulting zinc plasma reacting with 0.6% OCS in argon in a pulsed jet originating upstream of the ablation plasma. A Dunham expansion of the rotational constant is performed resulting in the determination of Be, α_e, γ_e, δ_e, and _e (Y_(01), -Y_(11), Y _(21), Y_(31), and Y_(41)) for ZnS. There is no evidence of Born-Oppenheimer breakdown in the mass-scaling of these parameters to within our experimental accuracy. χ_(aa)(~(67)Zn) of ~(67)Zn~(32)S is also determined.
机译:〜(64)Zn〜(32)S,〜(66)Zn〜(32)S和〜(68)Zn〜(32)S的三个单硫化锌同分异构体的前六个振动态的两个旋转跃迁,已经在腔傅立叶变换微波(FTMW)光谱中观察到了。此外,在v = 0的两个旋转跃迁中,由于I = 5/2〜(67)Zn核的核四极偶合常数,导致〜(67)Zn〜(32)S超细分裂。硫化锌是通过对锌棒进行激光烧蚀而产生的,所产生的锌等离子体与源自于烧蚀等离子体上游的脉冲射流中的0.6%OCS氩气反应。进行旋转常数的Dunham扩展,从而确定Be,α_e,γ_e,δ_e和_e(Y_(01),-Y_(11),Y _(21),Y_(31)和Y_( 41))对于ZnS。这些参数的质量缩放没有超出我们实验精度的证据,这没有Born-Oppenheimer崩溃的迹象。还确定了〜(67)Zn〜(32)S的χ_(aa)(〜(67)Zn)。

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