The Performance Analysis of a Quantum Mechanical Carnot-Like Engine Using Diatomic Molecules

This study presents an analysis of a two-state quantum mechanical Carnot-like engine using diatomic molecules i.e., the Morse oscillator MO, as the working substance. The engine’s cycle consists of two adiabatic and two isoenergetic processes. The performance parameters such as the power output, dimensionless power (with its efficiency) and the optimal region of the engine were determined by considering the potential width \(L\) $L$ moving with finite speed. The results obtained in this work are found to be an analog of the classical Carnot heat engine. Notably, when comparing our results with those obtained using different working substances, such as the Harmonic oscillator HO within a similar engine setup, our analysis demonstrates that the MO stands out as a more potent working substance with enhanced efficiency for our engine.