Threshold laws in delayed emission: an experimental approach B. Climen, F. Pagliarulo, A. Ollagnier, B. Baguenard, B. Concina, M. A. Lebeault, F. Lépine and C. Bordas Eur. Phys. J. D, 43 1-3 (2007) 85-89 Published online: 24 May 2007 DOI: 10.1140/epjd/e2007-00116-7