Multi-wavelength anomalous diffraction at high x-ray intensity
arXiv:1110.3652 · doi:10.1103/PhysRevLett.107.218102
Abstract
The multi-wavelength anomalous diffraction (MAD) method is used to determine phase information in x-ray crystallography by employing dispersion corrections from heavy atoms on coherent x-ray scattering. X-ray free-electron lasers (FELs) show promise for revealing the structure of single molecules or nanocrystals within femtoseconds, but the phase problem remains largely unsolved. Due to the ultrabrightness of x-ray FEL, samples experience severe electronic radiation damage, especially to heavy atoms, which hinders direct implementation of the MAD method with x-ray FELs. We propose a generalized version of the MAD phasing method at high x-ray intensity. We demonstrate the existence of a Karle--Hendrickson-type equation for the MAD method in the high-intensity regime and calculate relevant coefficients with detailed electronic damage dynamics of heavy atoms. Our results show that the bleaching effect on the scattering strength of the heavy atoms can be advantageous to the phasing method. The present method offers a potential for \textit{ab initio} structural determination in femtosecond x-ray nanocrystallography.
5 pages, 3 figures, to be published in Phys. Rev. Lett
References in corpus (1)
Cited by in corpus (16)
- Deep inner-shell multiphoton ionization by intense x-ray free-electron laser pulses
- Monte Carlo calculation of ion, electron, and photon spectra of xenon atoms in x-ray free-electron laser pulses
- Efficient electronic structure calculation for molecular ionization dynamics at high x-ray intensity
- Atomic and molecular dynamics triggered by ultrashort light pulses on the atto- to picosecond time scale
- Incoherent x-ray scattering in single molecule imaging
- Using XFELs for Probing of Complex Interaction Dynamics of Ultra-Intense Lasers with Solid Matter
- Determination of multiwavelength anomalous diffraction coefficients at high x-ray intensity
- Time-resolved ultrafast x-ray scattering from an incoherent electronic mixture
- Femtosecond reduction of atomic scattering factors triggered by intense x-ray pulse
- Theoretical evidence for the sensitivity of charge-rearrangement-enhanced x-ray ionization to molecular size
- Generation of large-bandwidth x-ray free electron laser with Evolutionary Many-Objective Optimization Algorithm
- A molecular-dynamics approach for studying the non-equilibrium behavior of x-ray-heated solid-density matter
- Inhibition of Current-spike Formation Based on Longitudinal Phase Space Manipulation for High-Repetition-Rate X-ray FEL
- Bandwidth broadening of X-ray free electron laser pulses with the natural gradient of planar undulator
- Compton spectra of atoms at high x-ray intensity
- Radiation-damage-free ghost diffraction with atomic resolution