  While the implementation of single particle coherent diffraction imaging for
non-crystalline particles is complicated by current limitations in photon flux,
hit rate, and sample delivery a concept of many-particle coherent diffraction
imaging offers an alternative way to overcome these difficulties. Here we
present a direct, non-iterative approach for the recovery of the diffraction
pattern corresponding to a single particle using coherent x-ray data collected
from a two-dimensional (2D) disordered system of identical particles, that does
not require a priori information about the particles and can be applied to a
general case of particles without symmetry. The reconstructed single particle
diffraction pattern can be directly used in common iterative phase retrieval
algorithms to recover the structure of the particle.
