The process is a radiationless, almost resonant transfer of energy between sites and depends on the relative concentrations of the rare earth ions. In particular we are interested in measuring decay rates, excited state absorption, and branching ratios and detailed theories of such processes.
This was very puzzling and controversial, until.
La nieta pone chachondo al abuelo y este
Added: 6 day(s) ago Duration: 39:19 Viewed: 2605