分子特性的灵敏度编年史：揭开双光束 Z-Scan 和时间分辨热透镜光谱学的神秘面纱。

IF 2.7 2区化学 Q3 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry A Pub Date : 2024-09-23 DOI:10.1021/acs.jpca.4c04030

Aman Sharma, Sumit Kumar Gupta, Debabrata Goswami

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引用次数: 0

摘要

超灵敏热透镜 (TL) 光谱法对传导和对流之间的相互作用至关重要，它能为分子行为提供深刻的见解。这项研究通过使用双光束 Z 扫描方法和时间分辨 TL 光谱法，重点研究了分子对流的关键作用。我们特别研究了检测光圈与泵浦光束光斑大小之间的相关性。此外，我们还讨论了探测限制及其对对流时间感知的影响。我们引入了实验得出的比率，优化了灵敏度，提高了 TL 光谱的可靠性。这种精炼的 TL 光谱方法可以更深入地探索液体中的分子特征。

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Sensitivity Chronicles in Molecular Properties: Unraveling the Nexus of Dual-Beam Z-Scan and Time-Resolved Thermal Lens Spectroscopy.

Ultrasensitive thermal lens (TL) spectroscopy, where the interplay between conduction and convection is crucial, provides profound insights into molecular behavior. This work focuses on the critical role of molecular convection by using the dual-beam z-scan method and time-resolved TL spectroscopy. We specifically investigated the correlation between the detection iris and the spot size of the pump beam. Additionally, we address detection limitations and their influence on the perception of convection timing. We introduce an experimentally derived ratio optimized for higher sensitivity, enhancing the reliability of TL spectroscopy. This refined approach to TL spectroscopy allows for a deeper exploration of molecular characteristics in liquids.

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来源期刊

The Journal of Physical Chemistry A 化学-物理：原子、分子和化学物理

CiteScore

5.20

自引率

10.30%

发文量

922

审稿时长

1.3 months

期刊介绍： The Journal of Physical Chemistry A is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.