Difference between revisions of "XCCA"

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(Reconstruction)
(Reconstruction)
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* Richard A. Kirian, Kevin E. Schmidt, Xiaoyu Wang, R. Bruce Doak, and John C. H. Spence [http://journals.aps.org/pre/abstract/10.1103/PhysRevE.84.011921 Signal, noise, and resolution in correlated fluctuations from snapshot small-angle x-ray scattering] ''Phys. Rev. E'' '''2011''', 84, 011921. [http://dx.doi.org/10.1103/PhysRevE.84.011921 doi: 10.1103/PhysRevE.84.011921]
 
* Richard A. Kirian, Kevin E. Schmidt, Xiaoyu Wang, R. Bruce Doak, and John C. H. Spence [http://journals.aps.org/pre/abstract/10.1103/PhysRevE.84.011921 Signal, noise, and resolution in correlated fluctuations from snapshot small-angle x-ray scattering] ''Phys. Rev. E'' '''2011''', 84, 011921. [http://dx.doi.org/10.1103/PhysRevE.84.011921 doi: 10.1103/PhysRevE.84.011921]
 
* G. Chen, M. A. Modestino, B. K. Poon, A. Schirotzek, S. Marchesini, R. A. Segalman, A. Hexemer and P. H. Zwart [http://scripts.iucr.org/cgi-bin/paper?S0909049512023801 Structure determination of Pt-coated Au dumbbells via fluctuation X-ray scattering] ''J. Synchrotron Radiation'' '''2012''', 19, 695-700. [http://dx.doi.org/10.1107/S0909049512023801 doi: 10.1107/S0909049512023801]
 
* G. Chen, M. A. Modestino, B. K. Poon, A. Schirotzek, S. Marchesini, R. A. Segalman, A. Hexemer and P. H. Zwart [http://scripts.iucr.org/cgi-bin/paper?S0909049512023801 Structure determination of Pt-coated Au dumbbells via fluctuation X-ray scattering] ''J. Synchrotron Radiation'' '''2012''', 19, 695-700. [http://dx.doi.org/10.1107/S0909049512023801 doi: 10.1107/S0909049512023801]
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===Sparse Data===
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* K Ayyer, HT Philipp, MW Tate, JL Wierman, V Elser, SM Gruner [http://journals.iucr.org/m/issues/2015/01/00/dc5003/index.html Determination of crystallographic intensities from sparse data] ''IUCrJ'' '''2015''', 2 (1), 29-34. [http://dx.doi.org/10.1107/S2052252514022313 doi: 10.1107/S2052252514022313]
 
* Wierman JL, Lan TY, Tate MW, Philipp HT, Elser V, Gruner SM [http://journals.iucr.org/m/issues/2016/01/00/ro5005/ Protein crystal structure from non-oriented, single-axis sparse X-ray data] ''IUCrJ'' '''2016''', 3 (1), 43-50.  [http://dx.doi.org/10.1107/S2052252515018795 doi: 10.1107/S2052252515018795]
 
* Wierman JL, Lan TY, Tate MW, Philipp HT, Elser V, Gruner SM [http://journals.iucr.org/m/issues/2016/01/00/ro5005/ Protein crystal structure from non-oriented, single-axis sparse X-ray data] ''IUCrJ'' '''2016''', 3 (1), 43-50.  [http://dx.doi.org/10.1107/S2052252515018795 doi: 10.1107/S2052252515018795]
  

Revision as of 21:04, 11 November 2016

X-ray cross-correlation analysis (XCCA) is a suite of techniques for analyzing correlations within x-ray scattering datasets. In particular, analysis of angular correlations within the 2D detector image can be used to isolate structural information that would be lost in a conventional circular-averaged 1D curve. Thus, even for nominally isotropic materials (powder-like sample), information about local symmetry (and thus packing motifs or unit cell) can be extracted from the data.

Angular correlation information can also be mined to reconstruct the three-dimensional reciprocal-space from individual 2D detector snapshots. That is, XCCA methods can be exploited to co-align scattering frames, registering them into the 3D scattering volume. This is conceptually similar to reciprocal-space mapping, but instead of directly reconstructing reciprocal-space by merging images, this is done in a statistical sense (because the relative alignment of frames is not known).

References

XCCA

Reconstruction

Sparse Data

XFEL

See Also