Advanced undergraduate laboratory: exploring isotopic shifts in molecular spectroscopy

IF 0.6 4区教育学 Q4 EDUCATION, SCIENTIFIC DISCIPLINES

European Journal of Physics Pub Date : 2024-08-30 DOI:10.1088/1361-6404/ad6cb2

Ye Fei, Yanpeng Ye, Qihang Zhang, Yuzhu Liu

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引用次数: 0

Abstract

Current university physics curricula and pedagogical research lack the study of molecular spectrum and its isotopic effects. In light of this, and considering the simplistic architecture of CN molecules alongside the significance of carbon isotopes in atmospheric cycles and various other disciplines, we have developed an advanced molecular spectroscopy experiment tailored for upper-level undergraduate physics educational courses. Utilizing ¹²CO₂ and ¹³CO₂ as experimental mediums, this study delves into the exploration of molecular energy level transitions and isotopic effects within molecular spectra through the analysis of CN molecular emission spectra. Additionally, simulations of CN molecular energy level transitions were conducted using LIFBASE software, thereby deepening students’ grasp of molecular energy level quantization. This experiment uses molecular spectrum to realize the interpretation of energy level structure and isotope effects, which is groundbreaking and will add experimental reference and expansion to the teaching of atomic physics.

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本科生高级实验室：探索分子光谱中的同位素偏移

目前的大学物理课程和教学研究缺乏对分子光谱及其同位素效应的研究。有鉴于此，并考虑到碳纳米管分子结构的简单性以及碳同位素在大气循环和其他各学科中的重要性，我们开发了一种高级分子光谱实验，专为高年级本科物理教学课程量身定制。本研究利用 12CO2 和 13CO2 作为实验介质，通过分析氯化萘分子发射光谱，深入探索分子能级跃迁和分子光谱中的同位素效应。此外，还利用 LIFBASE 软件对氯化萘分子能级跃迁进行了模拟，从而加深学生对分子能级量子化的掌握。该实验利用分子光谱实现了能级结构和同位素效应的解读，具有开创性，将为原子物理教学增加实验参考和拓展。

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来源期刊

European Journal of Physics 物理-物理：综合

CiteScore

1.70

自引率

28.60%

发文量

128

审稿时长

3-8 weeks

期刊介绍： European Journal of Physics is a journal of the European Physical Society and its primary mission is to assist in maintaining and improving the standard of taught physics in universities and other institutes of higher education. Authors submitting articles must indicate the usefulness of their material to physics education and make clear the level of readership (undergraduate or graduate) for which the article is intended. Submissions that omit this information or which, in the publisher''s opinion, do not contribute to the above mission will not be considered for publication. To this end, we welcome articles that provide original insights and aim to enhance learning in one or more areas of physics. They should normally include at least one of the following: Explanations of how contemporary research can inform the understanding of physics at university level: for example, a survey of a research field at a level accessible to students, explaining how it illustrates some general principles. Original insights into the derivation of results. These should be of some general interest, consisting of more than corrections to textbooks. Descriptions of novel laboratory exercises illustrating new techniques of general interest. Those based on relatively inexpensive equipment are especially welcome. Articles of a scholarly or reflective nature that are aimed to be of interest to, and at a level appropriate for, physics students or recent graduates. Descriptions of successful and original student projects, experimental, theoretical or computational. Discussions of the history, philosophy and epistemology of physics, at a level accessible to physics students and teachers. Reports of new developments in physics curricula and the techniques for teaching physics. Physics Education Research reports: articles that provide original experimental and/or theoretical research contributions that directly relate to the teaching and learning of university-level physics.