Mobilities of Li⁺-attached butanol isomers, (n-BuOH)Li⁺, (s-BuOH)Li⁺, (i-BuOH)Li⁺, and (t-BuOH)Li⁺, in helium gas cooled by liquid nitrogen were measured in reduced electric fields E/N=$E/N=$ 8-65 Td. Together with previous measurements at room temperature, the results cover a range of collision energies (ε=$\epsilon =$ 10-130 meV). Differences in the mobilities of the isomers became pronounced at low collision energies; for example, (n-BuOH)Li⁺ showed a mobility about 5 % greater than (t-BuOH)Li⁺ at 10 meV.

中文翻译：

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85.5 K下氦气中与Li ⁺相连的丁醇异构体的迁移率

在液态氮冷却的氦气中，与Li ⁺相连的丁醇异构体（n -BuOH）Li ⁺，（s- BuOH）Li ⁺，（i- BuOH）Li ⁺和（t- BuOH）Li ^+的迁移率分别为在减小的电场中测得E / N =$E/ñ=$8-65吨 加上先前在室温下的测量结果，结果涵盖了一定范围的碰撞能量（ε=$\epsilon =$10-130 meV）。在低碰撞能量下，异构体的迁移率差异变得明显。例如，在10 meV下，（n -BuOH）Li ⁺的迁移率比（t -BuOH）Li ⁺大约5％。