Creation and Photo-Ionization of the Triplet c State of Molecular Hydrogen

Posted May 10th, 2010 at 12:11 pm.

Shirley Chen

Mentors: Prof. Elizabeth McCormack and Dr. Aaron Marks

Triplet states of molecular hydrogen are less frequently studied that singlet states due to the difficulty in creating them by photo-absorption from the singlet ground state. Alternatively, excitation via collisions with electrons can be used.

In the work reported here, the metastable triplet c state is created via collisions between ground state hydrogen moleculesand electrons emitted by a filament by using a new pulsed molecular beam source. The metastable c state is detected by resonant photo-ionization through the d states. The collection of ions is performed using a time-of-flight mass spectrometer. The results demonstrate the use of th emetastable c state as a gateway to populate highly excited ro-vibrational triplet states in molecular hydrogen.

Filed under: 2006,Chen, Shirley,McCormack, Dr. Elizabeth by Ann Dixon

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