Electron-Ion Temperature Relaxation in Warm Dense Hydrogen Observed With Picosecond Resolved X-Ray Scattering
نویسندگان
چکیده
Angularly resolved X-ray scattering measurements from fs-laser heated hydrogen have been used to determine the equilibration of electron and ion temperatures in warm dense matter regime. The relaxation rapidly cryogenic is visualized using 5.5 keV pulses Linac Coherent Light (LCLS) source a 1 Hz repetition rate pump-probe setting. We demonstrate that electron-ion energy transfer faster than quasi-classical Landau-Spitzer models use ad hoc cutoffs Coulomb logarithm.
منابع مشابه
Measurement of Electron-Ion Relaxation in Warm Dense Copper.
Experimental investigation of electron-ion coupling and electron heat capacity of copper in warm and dense states are presented. From time-resolved x-ray absorption spectroscopy, the temporal evolution of electron temperature is obtained for non-equilibrium warm dense copper heated by an intense femtosecond laser pulse. Electron heat capacity and electron-ion coupling are inferred from the init...
متن کاملObservations of continuum depression in warm dense matter with x-ray Thomson scattering.
Detailed measurements of the electron densities, temperatures, and ionization states of compressed CH shells approaching pressures of 50 Mbar are achieved with spectrally resolved x-ray scattering. Laser-produced 9 keV x-rays probe the plasma during the transient state of three-shock coalescence. High signal-to-noise x-ray scattering spectra show direct evidence of continuum depression in highl...
متن کاملTemperature relaxation in two-temperature states of dense electron-ion systems.
It is shown that the Landau-Spitzer theory for temperature relaxation between electrons and ions, which was originally derived for ideal plasmas, is in fact more general. A relaxation formula is derived, for arbitrary ion-ion coupling that follows from elementary considerations combined with the fluctuation-dissipation theorem and the f-sum rule. The conditions for the validity of this theory a...
متن کاملTime resolved collapse of a folding protein observed with small angle x-ray scattering.
High-intensity, "pink" beam from an undulator was used in conjunction with microfabricated rapid-fluid mixing devices to monitor the early events in protein folding with time resolved small angle x-ray scattering. This Letter describes recent work on the protein bovine beta-lactoglobulin where collapse from an expanded to a compact set of states was directly observed on the millisecond time sca...
متن کاملConformational Substates of Myoglobin Intermediate Resolved by Picosecond X-ray Solution Scattering
Conformational substates of proteins are generally considered to play important roles in regulating protein functions, but an understanding of how they influence the structural dynamics and functions of the proteins has been elusive. Here, we investigate the structural dynamics of sperm whale myoglobin associated with the conformational substates using picosecond X-ray solution scattering. By a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Physics
سال: 2022
ISSN: ['2296-424X']
DOI: https://doi.org/10.3389/fphy.2022.838524