Relativistic harmonics in the efficiency limit

Authors:

Robin Timmis, Colm Fitzpatrick, Jonathan Kennedy, Holly Huddleston, Elliott Denis, Abigail James, Chris Baird, Dan Symes, David McGonegle, Eduard Atonga, Heath Martin, Jeremy Rebenstock, John Neely, Jordan Lee, Nicolas Bourgeois, Oliver Finlay, Rusko Ruskov, Sam Astbury, Steve Hawkes, Matt Zepf, Karl Krushelnick, Edward Gumbrell, Paramel Pattathil Rajeev, Mark Yeung, Brendan Dromey, Peter Norreys