Comment on "experimental characterization of superradiance in a single-pass high-gain laser-seeded free-electron laser amplifier".
Bonifacio
R
R
Dipartimento di Fisica Università degli Studi di Milano and INFN Via Celoria 16, Milano I-20133, Italy.
Casagrande
F
F
Jaroszynski
D A
DA
McNeil
B W J
BW
Piovella
N
N
Robb
G R M
GR