Spin-polarized electron transmission through chiral halocamphor molecules

Spin-polarized electron transmission through chiral halocamphor molecules
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通过手性卤樟脑分子的自旋极化电子传输

DOI:
10.1088/1361-6455/aae1bd
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发表时间:
2018
期刊:
Molecular and Optical Physics
影响因子:
--
通讯作者:
Gay, T J
Gay, T J
中科院分区:
--
文献类型:
--
作者:
Dreiling, J M;Lewis, F W;Gay, T J

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我们测量了当纵向极化(手性)电子被手性卤素分子准弹性散射时的电子圆二色不对称性:3-溴樟脑(C10H15BrO),3-碘双酚(C10H15IO)和10-碘双酚。根据与Mott散射、靶电子螺旋度密度和自旋-其他轨道相互作用有关的三个经典模型,研究了这些不对称性的动力学起源。3-溴樟脑和3-碘双酚的不对称性与Z2相似,Z是靶分子中最重原子的核电荷,但10-碘双酚的不对称性比3-碘双酚的小。这与与解离电子结合相关的碰撞通道中的不对称性形成对比,在碰撞通道中,10-碘双酚具有更大的不对称性。为了系统地解决观察到的手性不对称性的动力学原因,考虑了迄今为止所有可用的电子-圆-二色性数据。
We have measured electron-circularly-dichroic asymmetries when longitudinally-polarized (chiral) electrons are scattered quasi-elastically by chiral halocamphor molecules: 3-bromocamphor (C 10 H 15 BrO), 3-iodocamphor (C 10 H 15 IO), and 10-iodocamphor. The proposed dynamic origins of these asymmetries are considered in terms of three classical models related to Mott scattering, target electron helicity density, and spin-other-orbit interactions. The asymmetries observed for 3-bromocamphor and 3-iodocamphor scale roughly as Z 2, where Z is the nuclear charge of the heaviest atom in the target molecule, but the scaling is violated by 10-iodocamphor, which has a smaller asymmetry than that for 3-iodocamphor. This is in contrast to the asymmetries in the collision channel associated with dissociative electron attachment, in which 10-iodocamphor has a much larger asymmetry. All of the available electron-circularly-dichroic data taken to date are considered in an effort to systematically address the dynamical cause of the observed chiral asymmetries.
作为电子圆二色性来源的溴樟脑和二溴樟脑中电子螺旋密度的研究
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发表时间: 2006
期刊: Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子: --
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DOI: --
发表时间: 1996
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