When energetic heavy ions interact with atoms,molecules,clusters or solid targets,various secondary particles are generated.We proposed a novel imaging spectrometer,the Momentum Computed Tomography(MCT)[1].In brief,a series of two-dimensional position spectrums of the charged particles after flying through specific static electromagnetic fields are firstly obtained,which corresponds to a set of line-integral measurements of their momentum distributions;then the entire-solid-angle momentum distributions are reconstructed with these projections.Due to this working theory,no TOF is introduced in the measurement and the counting rate capability is only limited by the position sensitive detector.Thus,it combines the advantages of the modern imaging spectrometers that can image the entire-solid-angle momentum distribution,and the classical spectrometers that are suitable to intense reaction measurement if a proper detector is employed.
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