Absolute determination of energy of ion beam - having support for target capable of placing it in rotation centre of mobile section and suppressing beam

摘要

A vacuum scattering chamber and computer are provided, the said scattering chamber consisting of a fixed section and a mobile section pivotable with respect to the fixed one. The two sections are connected to each other and vacuum proof. The fixed section is operatively connectable to a line of an incident particle beam and comprises a target consisting of a sheet, of a few micro m thickness, of a suitable material formed of molecules consisting of atoms with light weight nuclei, and atoms with heavy nuclei, suitable to elastically and anelastically scatter the particles. The mobile section comprises a sensor for detecting charged particles and a circuit transduces the signals supplied by the detector into electrical signals indicative of the energy possessed by particles elastically and anelastically scattered by target.