Characterization and control of plasma density distribution for the development of solid-target x-ray lasers.
By using deflectometry of a longitudinal probe pulse and reflective interferometry of a transverse probe pulse to resolve the spatiotemporal distribution of the preformed plasma, we characterize and control the plasma density distribution near the target surface for the development of solid-target x-ray lasers. We show that the use of prepulses in an ignitor-heater scheme can increase the scale length of the preformed plasma and how the effect varies with target materials. Many important issues crucial to x-ray lasing such as electron density distribution, electron temperature, and the optimal timing between pumping pulses can be resolved with these methods.
Chou
M-C
MC
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
Lin
P-H
PH
Tsai
H-E
HE
Chen
D-L
DL
Lee
C-H
CH
Lin
J-Y
JY
Wang
J
J
Chen
S-Y
SY