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thank your for your answer! I also think it should be vibraitonal modes exceted. However, what confused me is that 0 to 0 transition is non-meaningful! attached is the paper!DrDu said:I suppose it is some symbol for vibrational modes excited. Maybe you could write something about what is measured? Is this a mass spectrum after two photon excitation?
The symbol in molecular spectroscopy refers to the notation used to represent different types of molecules and their energy levels. It is often used to track the transitions between these energy levels and determine the structure and properties of the molecule.
The symbol is determined by considering the electronic, vibrational, and rotational states of the molecule. These states are represented by different letters and numbers, which are then combined to form the symbol.
The letters in the symbol represent the electronic state of the molecule, while the numbers represent the vibrational and rotational states. Each letter and number has a specific meaning and can provide information about the molecule's properties.
Yes, the symbol can change for the same molecule in different conditions. This is because the electronic, vibrational, and rotational states of the molecule can be affected by external factors such as temperature, pressure, and the presence of other molecules.
The symbol is used to interpret the results of molecular spectroscopy experiments. By analyzing the transitions between energy levels represented by the symbol, scientists can determine the chemical composition, structure, and properties of the molecule being studied.