Improvement of efficiency of time-domain interferometry method using two driven nuclear absorbers

A time-domain interferometry (TDI) method using the nuclear resonant scattering of synchrotron radiation enables us to study the microscopic slow dynamics of around 100 ns in supercooled liquids and soft matters. To improve the TDI efficiency, we developed a new TDI method by adding another driven nuclear absorber with a single-line Moessbauer spectrum to the conventional TDI method. By using the nuclear absorbers with the optimum thickness estimated by simulation, new TDI experiments were successfully performed and the efficiency was improved about two times that obtained by the conventional TDI method used thus far. (author)