Simple ortho-para hydrogen and para-ortho deuterium converter for matrix isolation spectroscopy
Simple ortho-para hydrogen and para-ortho deuterium converter for matrix isolation spectroscopy
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用于矩阵隔离光谱的简单邻位氢和对位氘转换器
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Xuefeng Wang
中科院分区：
文献类型：
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作者：
L. Andrews;Xuefeng Wang
用含有催化剂的铜管浸泡在液氦上方的冷气中，将正常的H2和D2转化为高纯度的J=0样品。转化后的样品直接从12-16 K催化剂升华到4 K基质上记录红外光谱。由于J=1异构体在主要J=0组分带上的微扰，红外吸收光谱的降低表明，在J=0组分中有99%的固体样品形成。这种高纯度的p-H2和o-D2在4 K的冷凝过程中受到特斯拉线圈放电的影响，J=0组分的数量随放电压力的变化而下降2%-8%。我们还表明，邻氚是一种很好的基质宿主。
A copper tube containing catalyst immersed in the cold gas above liquid helium is used to convert normal H2 and D2 to high purity J=0 samples. The converted samples are sublimed directly from 12–16 K catalyst to the 4 K matrix substrate for recording infrared spectra. The decrease of infrared absorptions due to J=1 isomer perturbations on the major J=0 species bands show that solid samples >99% in the J=0 species are formed. Such high purity p-H2 and o-D2 subjected to Tesla coil discharge during condensation at 4 K sustain a 2%–8% decrease in the J=0 species population depending on the discharge pressure. We also show that orthodeuterium is an excellent matrix host.