In reply to Russ George's message of Fri, 20 Jan 2017 17:40:12 -0800: Hi, https://phys.org/news/2015-11-discovery-enable-portable-particle.html
Quote:- "This effect is known as relativistic self-focusing, and becomes more pronounced as the plasma density increases." Note that Holmlid claims an extremely dense plasma, so one would expect the self-focusing to also be extreme, presumably resulting in a very short path required to accelerate particles to high energy. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
