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Analysis of manifestation of strong quadrupole light-molecule interaction in the SEHR spectra

机译:SEHR光谱中强四极光分子相互作用的表现分析

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摘要

It is demonstrated that appearance of strong lines in surface-enhanced hyper-Raman (SEHR) spectra of phenazine and pyrazine, which are associated with totally symmetric vibrations, as well as other details of these spectra, can be explained using the dipole-quadrupole theory. The main point of this theory is the concept of strong quadrupole interaction of light with molecules, which arises in surface fields strongly varying in space near a rough metal surface. The theoretical results make it possible to correctly interpret the SEHR spectra of phenazine and pyrazine (namely, the emergence of the strong lines due to totally symmetric vibrations that are forbidden in usual hyper-Raman scattering), as well as other lines in the spectrum.
机译:已证明,可以使用偶极-四极理论解释与完全对称振动相关的吩嗪和吡嗪的表面增强超拉曼(SEHR)光谱中的强线以及这些光谱的其他细节。 。该理论的要点是光与分子之间的强四极相互作用的概念,这种相互作用是在粗糙金属表面附近空间中空间变化很大的表面场中产生的。理论结果使得有可能正确地解释吩嗪和吡嗪的SEHR光谱(即,由于通常的高拉曼散射所禁止的完全对称振动而导致的强谱线的出现),以及谱图中的其他谱线。

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