Photodesorption of hydrogen molecules physisorbed on Ag: Isotope dependence of translational-energy distribution

• Main Authors: Fukutani, K., Niki, K., Ito, T., Tashiro, H., Matsumoto, M., Wilde, M., Okano, T., Diño, Wilson Agerico, Kasai, Hideaki
• Format: text
• Published: Animo Repository 2005
• Subjects: Hydrogen; Silver; Adsorption; Physisorption; Physics
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/3473; https://animorepository.dlsu.edu.ph/context/faculty_research/article/4475/type/native/viewcontent/j.susc.2005.06.065
• Institution: De La Salle University

We report findings of our investigation on the non-thermal photodesorption dynamics of H2(D2) initially physisorbed on Ag. We photodesorbed the H2(D2) using a 6.4 eV pump photon, and then state-selectively probed the desorbing H2(D2) using the resonance-enhanced multi-photon ionization technique. The corresponding time-of-flight (TOF) spectra measured for the initial rotational states J = 1 and J = 0 indicate no particular J dependence. The mean translational temperature was ∼8 K for both H2 and D2. Using a coherent DIET (desorption induced by electronic transitions) model, we were able to reproduce the TOF spectra, including the observed isotope dependence. © 2005 Elsevier B.V. All rights reserved.