FIELD: equipment of system of control and protection of nuclear reactor. SUBSTANCE: tubular body of ionization fission chamber comes in the form of solid multisectional assembly with internal electrode placed in it coaxially. Face samples in which spacing insulators with overlapping of volume of samples in adjacent sections are installed are formed on internal side of tubular body in each section. Metal and ceramic unit and stem are fixed by insulators of face samples of extreme sections and by embracing seals and coat of fissionable material is applied on internal surface of body between insulators. EFFECT: diminished overall dimensions, increased sensitivity and reliability of ionization fission chamber. 1 dwg
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