Equation-of-state measurements of polyimide at pressures up to 5.8 TPa using low-density foam with laser-driven shock waves.
The laser-driven equation-of-state (EOS) experiments for polyimide are presented. The experiments were performed with emission measurements from the rear sides of shocked targets at up to a laser intensity of 10(14) W/cm(2) or higher with 351 nm wavelength and 2.5 ns duration. Polyimide Hugoniot data were obtained up to 0.6 TPa with good accuracy. Applying low-density foam ablator to the EOS unknown material, we also obtained the data at a highest pressure of 5.8 TPa in the nonmetal materials. Those data were in agreement with the theoretical curves.
Takamatsu
K
K
Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan.
Ozaki
N
N
Tanaka
K A
KA
Ono
T
T
Nagai
K
K
Nakai
M
M
Watari
T
T
Sunahara
A
A
Nakano
M
M
Kataoka
T
T
Takenaka
H
H
Yoshida
M
M
Kondo
K
K
Yamanaka
T
T