Atomic, Molecular, and Optical Physics Seminar
Interacton Induced H2 Spectra in Carbon Nanostructures
Professor Roger M.
Penn State University
Molecular hydrogen, by itself, has no vibration-rotation dipole spectrum by virtue of its symmetry. Nevertheless, it is well known that in the presence of foreign molecules a (sometimes transient and sometimes permanent) dipole can be formed which leads to transitions in the fundamental band, around 4000-5000 cm-1. A brief review of some of what is known about these (rather strange) transitions will be presented. Of more recent interest is the uptake of molecular hydrogen in Carbon nanostructures, along with diagnostic techniques for studying this process. With that, the spectrum of H2 in Buckeyball lattices has actually been observed. The theory and results of our attempts to explain these spectra will be described. I shall also describe an extention to the (so-far unobserved) case of hydrogen trapped within arrays of Carbon nanotubes.
Wednesday, October 15, 2003
Gant Science Complex