Abstract: A method for characterizing particle objects comprises generating a radiation beam, illuminating with the radiation beam an observation region transited by a particle object, collecting an interference image determined by an interference between a transmitted fraction and a part of the scattered fraction of the radiation beam that propagates around the direction of the optical axis, collecting a part of the scattered fraction that propagates at the scattering angle, and measuring at least one scattered radiation intensity value determined by the part of the scattered fraction, calculating, from the interference image, a pair of independent quantities that define the complex field of the first part of the scattered fraction, calculating, starting from the pair of independent quantities, a theoretical value of scattered radiation intensity, and comparing the measured value with the theoretical scattered radiation intensity value.

Abstract: A method for characterizing particle objects comprises generating a radiation beam, illuminating with the radiation beam an observation region transited by a particle object, collecting an interference image determined by an interference between a transmitted fraction and a part of the scattered fraction of the radiation beam that propagates around the direction of the optical axis, collecting a part of the scattered fraction that propagates at the scattering angle, and measuring at least one scattered radiation intensity value determined by the part of the scattered fraction, calculating, from the interference image, a pair of independent quantities that define the complex field of the first part of the scattered fraction, calculating, starting from the pair of independent quantities, a theoretical value of scattered radiation intensity, and comparing the measured value with the theoretical scattered radiation intensity value.

Abstract: A method of measuring properties of particles includes generating a beam of radiation (IW); illuminating with the beam (IW) an observation region (MR) which is transited by a particle (B). A portion of the beam (IW) gives rise to radiation (SW) which is scattered by scattering interaction with the particle (B), and another portion (TW) is transmitted substantially undisturbed through the observation region (MR). In a detection plane (M), a plurality of radiation intensity values are detected which are determined by the interference between the scattered radiation (SW) and the transmitted radiation (TW). The detection of the radiation intensity values in the detection plane (M) is carried out according to a time sequence of acquisitions corresponding to successive transit positions of the particle through the observation region (MR).

Abstract: A method of measuring properties of particles comprises the steps of generating a beam of radiation (IW); illuminating with the beam (IW) an observation region (MR) which is transited by a particle (B), a portion of the beam (IW) giving rise to radiation (SW) which is scattered by scattering interaction with the particle (B), and another portion (TW) being transmitted substantially undisturbed through the observation region (MR); and detecting, in a detection plane (M), a plurality of radiation intensity values which are determined by the interference between the scattered radiation (SW) and the transmitted radiation (TW). The detection of the radiation intensity values in the detection plane (M) is carried out according to a time sequence of acquisitions corresponding to successive transit positions of the particle through the observation region (MR).