Demonstration of a transient-gain nickel-like xenon-ion x-ray laser.
We demonstrate a high-gain nickel-like xenon-ion x-ray laser, using a picosecond-laser-irradiated gas-puff target. The elongated x-ray laser plasma column was produced by irradiation of the gas-puff target with line-focused double picosecond laser pulses with a total energy of 18 J in a traveling-wave excitation scheme. Strong lasing at 9.98 nm was observed, and a high gain coefficient of 17.4 cm(-1) was measured on the transient collisionally excited 4d-4p , J=0-1 transition for nickel-like xenon ions with target lengths as great as 0.45 cm. A weak nickel-like lasing line at a shorter wavelength of 9.64 nm was also observed, with a gain coefficient of 5.9 cm(-1) .
Lu
Peixiang
P
Kawachi
Tetsuya
T
Kishimoto
Maki
M
Sukegawa
Kouta
K
Tanaka
Momoko
M
Hasegawa
Noboru
N
Suzuki
Masayuki
M
Tai
Renzhong
R
Kado
Masataka
M
Nagashima
Keisuke
K
Daido
Hiroyuki
H
Kato
Yoshiaki
Y
Fiedorowicz
Henryk
H
Bartnik
Andrzej
A