Electron Spin Resonance: Theory and Instrumentation

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chemistry, electron spin resonance, spectroscopy, energy, electromagnetic radiation


Chemistry | Physical Sciences and Mathematics


The quantum chemist attempts to describe the energy states of atoms and molecules and to correlate his theories with the physical structure of the species involved. When the quantum chemist wants to put his postulates tot he experimental test, he turns to the field of spectroscopy. Several branches of spectroscopy have evolved, corresponding to the various energy ranges involved in quantum level transitions. In any type of spectroscopy, the atomic or molecular system being studied absorbs or emits electromagnetic radiation. The energy of this electromagnetic radiation is equivalent to an energy difference between two allowed quantum states of the system. Planck's relation, ΔE = hν, indicates that the change in energy is proportional to the frequency of the electromagnetic radiation. Thus the frequency of the absorbed radiation can be correlated with the energy involved in a transition from one quantum level to another.

Department 1 Awarding Honors Status


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