Supplementary information

From the following article

Stable generation of GeV-class electron beams from self-guided laser–plasma channels

Nasr A. M. Hafz, Tae Moon Jeong, Il Woo Choi, Seong Ku Lee, Ki Hong Pae, Victor V. Kulagin, Jae Hee Sung, Tae Jun Yu, Kyung-Han Hong, Tomonao Hosokai, John R. Cary, Do-Kyeong Ko & Jongmin Lee

Nature Photonics 2, 571 - 577 (2008) Published online: 10 August 2008

doi:10.1038/nphoton.2008.155