TY - JOUR
T1 - Generation of counter-streaming plasmas for collisionless shock experiment
AU - Sakawa, Y.
AU - Ide, T.
AU - Morita, T.
AU - Tomita, K.
AU - Uchino, K.
AU - Kuramitsu, Y.
AU - Ohnishi, N.
AU - Takabe, H.
N1 - Funding Information:
The authors would like to acknowledge the dedicated technical support by the staff at the GEKKO-XII facility for the laser operation and target fabrication. This work was performed under the joint research project of the Institute of Laser Engineering, Osaka University. Y. S. acknowledges support by the JSPS KAKENHI Grant Numbers JP21340172, JP24340141, and JP15H02154.
Publisher Copyright:
© 2017
PY - 2017/6
Y1 - 2017/6
N2 - The generation mechanism of counter-streaming plasmas, by irradiating an inner-surface of the 1st-plane of double-plane target, is investigated experimentally using optical imaging and collective Thomson scattering (CTS) ion-term measurement. The CTS measurement reveals that counter-streaming plasmas exist at the same time at the same position, which is the evidence for the collisionless interaction between the counter-streaming plasmas. The generation of the 2nd-plane plasma is in two steps: First, the 2nd-plane is ablated nearly at the laser timing by radiation from the 1st-plane plasma. Then ≃ 5−7ns later, when the plasma from the 1st-plane reaches the 2ns-plane, it induces higher-density plasma generation.
AB - The generation mechanism of counter-streaming plasmas, by irradiating an inner-surface of the 1st-plane of double-plane target, is investigated experimentally using optical imaging and collective Thomson scattering (CTS) ion-term measurement. The CTS measurement reveals that counter-streaming plasmas exist at the same time at the same position, which is the evidence for the collisionless interaction between the counter-streaming plasmas. The generation of the 2nd-plane plasma is in two steps: First, the 2nd-plane is ablated nearly at the laser timing by radiation from the 1st-plane plasma. Then ≃ 5−7ns later, when the plasma from the 1st-plane reaches the 2ns-plane, it induces higher-density plasma generation.
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U2 - 10.1016/j.hedp.2017.04.007
DO - 10.1016/j.hedp.2017.04.007
M3 - Article
AN - SCOPUS:85019379129
SN - 1574-1818
VL - 23
SP - 207
EP - 211
JO - High Energy Density Physics
JF - High Energy Density Physics
ER -