Mobile device for irradiation and detection of radiation

Abstract

Radiation lenses including channels consisting of capillaries or fibres, polycapillaries or multilayer planar properly coupled, a central channel filled with refracting material for neutrons and an extraction channel. The channels can be bent with a graded curvature and filled with material with an increasing refracting index, such an increasing refracting index depending on the position of the channel respect the central channel. The lenses can be subdivided into sectors in which the channels have a different curvature and are filled with materials with a different refracting index to increase the combined effect of the total reflection and the refraction. The sectors can be configured in a cubic, cone or prism shape.

I claim: 
     
         1 . Radiation lenses including channels consisting of capillaries or fibres, polycapillaries or multilayer planar properly coupled, a central channel filled with refracting material for neutrons and an extraction channel. 
     
     
         2 . Radiation lenses according to  claim 1  in which said channels are bent with a graded curvature and filled with material with an increasing refracting index; such as an increasing refracting index depending on the position of the channel respect the central channel. 
     
     
         3 . Radiation lenses according  claim 2  in which said lenses are subdivided into sectors in which the channels have a different curvature and are filled with materials with a different refracting index to increase the combined effect of the total reflection and the refraction. 
     
     
         4 . Radiation lenses according the  claims 1  in which the sectors assume a cubic, cone or prism shape. 
     
     
         5 . Process for diffractometric neutrons analysis in which is used in equipment and provided by radiation lenses according to  claim 1 , in which:
 the base of a robot and the corresponding arms are moved in order to find the position of the area to be investigated and its co-ordinate are calculated with reference to the base of a robot;   the base of the robot carrying the source and the respective arms are moved to have a “source point” and a proper take off angle in order to provide an angle of the incident beam to the tangent plane to the focusing circle on the goniometer centre;   the base of the robot carrying the detector and the corresponding arms are moved to position said robot so that:
 a) the detector is coplanar to the source and the goniometric centre; 
 b) possibly, when using divergent beams in incident and diffraction direction, the goniometric centre, individuated by the centring window, is equidistant from the other two points; 
 c) the alignment of the detector and goniometric centre form a 2θ angle respect to the alignment of the source and the goniometric centre; 
   the robot carrying the detector and the robot carrying the source are moved in opposite direction respect to the investigation axis so that the collimation axis and the receiving axis lie in the same equatorial plane and generate vertex opposite angles with the axis contained in the equatorial plane and orthogonal to the goniometer axis (configuration θ-θ);   a fine adjustment is realized to find the maximum radiation collected by the detector;   measurement starts keeping fix the robot carrying the source and the central robot carrying the pointing system; and   moving the robot with detector both on the goniometer circle and on the cone circumference (Debije circle) to look for the maximum intensity.