High‐resolution infrared spectroscopy of isotopic impurity Q1(0) transitions in solid parahydrogen
High‐resolution infrared spectroscopy of isotopic impurity Q1(0) transitions in solid parahydrogen
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固体仲氢中同位素杂质 Q1(0) 跃迁的高分辨率红外光谱
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发表时间：
1996
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影响因子：
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通讯作者：
T. Oka
中科院分区：
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作者：
D. Weliky;K. Kerr;T. Byers;Yu Zhang;T. Momose;T. Oka
我们对固体仲氢中同位素杂质D2和HD的Q1（0）（v=1 <$0，J=0 <$0）振动跃迁进行了高分辨红外光谱研究。每种杂质的光谱都由分布在0.4 cm−1上的100条清晰谱线组成。线宽变化，但在10 MHz的量级上。这些光谱表明：（1）J=0同位素杂质的红外Q1（0）跃迁是由附近杂质J=1分子的四极场诱导的;（2）强Q1（0）线的光谱图案是由于J=1/J=0 o-D2或J=1/J=0 HD最近邻（nn）杂质对的M取向能级的分裂。在一些理论工作的帮助下，D2和HD光谱中的强线可以分别明确地指定为包含p-D2/o-D2或o-H2/o-D2和o-H2/HD的nn个杂质对的特定量子态Q1（0）跃迁。含有o-H2的nn个杂质对的指定跃迁通过与...
We have made a high‐resolution infrared spectroscopic study of the Q1(0) (v=1←0, J=0←0) vibrational transitions of the isotopic impurities D2 and HD in solid parahydrogen. Each impurity has a spectrum composed of ∼100 sharp lines spread over ∼0.4 cm−1. The linewidths vary, but are on the order of 10 MHz. These spectra make clear: (1) the infrared Q1(0) transitions of J=0 isotopic impurities are induced by the quadrupolar fields of nearby impurity J=1 molecules; and (2) the spectral pattern of strong Q1(0) lines is due to the splitting of the M‐orientational levels of J=1/J=0 o‐D2 or J=1/J=0 HD nearest‐neighbor (nn) impurity pairs. With the aid of several theoretical works, the strong lines in the D2 and HD spectra can be individually and unambiguously assigned as specific quantum state Q1(0) transitions of nn impurity pairs containing p‐D2/o‐D2 or o‐H2/o‐D2, and o‐H2/HD, respectively. The assigned transitions of nn impurity pairs containing o‐H2 are confirmed by combination differences which agree to with...