DARPA Developing Defensive Plasma Shield

galactic_grub writes "According to an article at New Scientist, DARPA is developing a plasma shield that would allow troops to stun and disorientate enemies. The system will use a technology known as dynamic pulse detonation (DPD), which involves producing a ball of plasma with an intense laser pulse, and then a supersonic shockwave within the plasma using another pulse. The result is a gigantic flash and a loud bang in a the air. 'The company has also pitched a portable laser rifle, which would be lethal, to the US Army. It would weigh about fifteen kilograms, would have a range of more than a mile, and could have numerous advantages over existing rifles - better accuracy and the ability to hit a moving target at the speed of light.'"

Comments

I'd better get one, too

[iminplaya]

If there is to be a balance of power of any kind.

Re:Lasers efficient at killing?

[Carnildo]

Depends on what the laser is tuned for. If it's tuned for cutting, then yes, it will leave a cauterized hole. But if it's tuned for energy transfer (think: turning water to steam), it's more like being shot with an exploding bullet.

Re:Why the toys???

[Weedlekin]

"Geneva Convention "war". Works pretty well. Won in WWII and Korea."

The Korean war was a limited war because it was restricted to Korea itself despite the fact that China directly intervened by sending huge numbers of men who directly fought against UN forces, and defeated them on a number of occasions, inflicting heavy casualties in the process. In a WWII-style conflict, this would have resulted in massive retaliation against China itself, probably by dropping atomic bombs on Chinese cities, which MacArthur was seriously considering before being replaced (the fact that China had no airforce would have made this a low-risk affair in a military sense, but the possibility of direct USSR intervention meant that it was very politically risky).

Note also that we (i.e. the UN forces which were predominantly but far from exclusively US forces) did not win the Korean war, because it ended in a stalemate which culminated in a ceasefire agreement that essentially established the same North / South border that had been in place before the war. This ceasefire is still in place, so the war hasn't officially ended, hence a half century long armed stand-off between the two opposing sides. This wasn't the goal of the US / UN side, or the one the North Koreans had, although it does seem to have been what China wanted (the Chinese didn't intervene until UN forces were near to their borders with North Korea; they'd warned the UN that this would happen on several occasions, but the CIA told Truman they were bluffing, so the warnings were ignored). It would therefore be fair to say that the only true winner was China, while both the UN / US and North Korea can be regarded as net losers because neither managed to realise their military or political goals.