2015 BFY II Abstract Detail Page

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Abstract Title: Vibrational and Rotational Spectra of Diatomic Molecules: Two Experiments in an Advanced Laboratory Course of Atomic and Molecular Spectroscopy
Abstract: Atomic and molecular physics provides an excellent instructional background for STEM students interested in applied quantum mechanics. In this spirit, we present two rather straightforward and inexpensive experiments – Vibrational and Rotational Spectra of Diatomic Molecules – parts of a sequence that forms the backbone of a course of advanced atomic and molecular spectroscopy (PHY442/542) offered at Miami University, Oxford, Ohio. The idea behind these interlinked experiments is to investigate the energy profile of molecular systems using the emission spectrum of diatomic molecules of nitrogen in a discharge tube. The students collect the emission spectra at two resolutions revealing the vibrational and the rotational energy structures. Subsequently, the spectral data are analyzed using quantum mechanical models to extract various characteristics of the molecule. For instance, the vibrational spectrum yields the fundamental frequencies and anharmonicities of the electronic states involved and thence the force constant of the molecular vibrator, while the rotational spectrum yields the rotational constants of the respective states and thence the moments of inertia of the molecular rotor.
Abstract Type: Poster

Author/Organizer Information

Primary Contact: Mario Freamat
Morrisville State College
and Co-Presenter(s)
Dr. Burcin Bayram
Miami University
Physics Department
Oxford, OH 45056

Presentation Documents

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