Introduction
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• Initiating the chain ssion reaction by irradiating the material with
the pulsed neutron ux.
e system is the most critical and the most complicated of all the nonnuclear
components of a nuclear weapon. Its design requires the expertise in a number
of the fundamental sciences, the application of various materials, the special
elemental base, the maintenance of the numerous technologies and the unique
equipment, and high-precision measurements.
VNIIA has designed and prepared the serial production of several genera-
tions of the ring and initiation systems. e weight and overall dimensions of
the modern ring and initiation systems are over 100 times less compared to
the rst models, but the functionality, reliability, and l ...