Laser beams can be utilized to produce ions and electrons to be applied in radiotherapy and adrontherapy. We describe the innovative techniques to extract ions and electrons from plasma provided by metal target of different elements and electron of low emittance by photoelectric effect. Beside, the characterization of beams consists in the measurements of electromagnetic and geometric properties. The technique very used to get geometric properties is the pepper pot or double slit. By measurements the emittance values obtained were very low pointing out the laser application in particles generation is a very interesting means to produce low emittance beams.