Prinzipielle Möglichkeiten des Nachweises nuklearer Gefechtsköpfe

An overview is given on the nondestructive techniques for the detection of nuclear weapons. The investigation in passive and active methods shows that especially the radioactive radiation of the nuclear components is well suited for a clear identification. We made passive measurements on a model (made with depleted Uranium) and found that with energy selective instruments a detection in a distance of some ten meters is possible. In some cases, especially for U-235, active methods (neutron interrogation) are needed for clear identification. It is possible to detect nuclear warheads in a distance of some ten meters in case no countermeasures (severe shielding or radiation) are made.