In particular, higher yield nuclear weapon designs have thermal pulses which last for several seconds.

But from what I know of Soviet nuclear weapon design, it sounds right.

In 1999, nuclear weapon design was in the news again, for the first time in decades.

Advances in nuclear weapon design have made bombs simpler to build.

Highly enriched uranium, which contains an even greater proportion of U-235, is sometimes used in nuclear weapon design.

Lee is being held without bail on 59 counts of mishandling nuclear weapon design, construction, and testing information.

This is one of the three main requirements in a nuclear weapon design to create a working fission atomic bomb.

In particular, the gun method cannot be used with plutonium (see nuclear weapon design).

The concept is important in nuclear weapon design.

Moreover, although the ultimate check of a nuclear weapon design is a violent blast, non-explosive tests are also done.