Thursday, April 30, 2009, 9:00 am — NSLS-II Seminar Room, Bldg. 817
One of the most ambitious dreams of modern spectroscopy is the setup of next generation X Ray spectrometers with an unprecedentedly narrow (sub-meV bandwidth) and sharp instrumental resolution function. Such upgrade would provide answers to a host of hot and unsolved topics concerning the dynamics response of liquids in the Q= 0.1-1 nm-1 and E =0.1-1 meV dynamic range, i.e. inside a “no-man’s land” for existing instrumentation. As an example, I will show how such spectrometer could considerably improve our knowledge of the rather anomalous high frequency behavior of liquid water. In particular it would help to shed a deeper insight onto the rich phenomenology associated to structural relaxations as well as on the onset of transverse modes at low temperatures.
Hosted by: Qun Shen
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