Excalibur was a proposed x-ray laser based anti-missile technology. It used a nuclear warhead surrounded by a number of metal rods that acted to focus the output of the explosion into narrow beams that would be aimed at nuclear missiles and their warheads. This image shows a single Excalibur exploding in the upper left of the image and firing at three targets. In practice, each warhead would fire at dozens or thousands of targets at once
Lawrence Livermore National Laboratory
circa 1983 <div style="display: none;">date QS:P,+1983-00-00T00:00:00Z/9,P1480,Q5727902</div>
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