FIELD: physics.
SUBSTANCE: device for modulation of energy spectrum comprises the first unit for modulation of energy spectrum intended for modulation of the first beam having the first energy spectrum and second unit for modulation of energy spectrum connected to the first unit for modulation of energy spectrum and intended for modulation of the second beam having the second energy spectrum that differs from the first energy spectrum, moreover, only the first unit for modulation of energy spectrum or only the second unit for modulation of energy spectrum are connected to axis of rotation.
EFFECT: increased validity of recognition of object materials having considerable thickness.
26 cl, 6 dwg
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