Return To: Session OV3 - Inertial Fusion Overview
Prev Page: Session OV3 - Inertial Fusion Overview
Next Page: (OV3/3) The Heavy Ion Fusion Program in the

(OV3/2) Advances of Direct Drive Schemes in Laser Fusion Research at ILE Osaka

T. Yamanaka¹⁾, K. Mima¹⁾, K. A. Tanaka²⁾, Y. Kitagawa¹⁾, R. Kodama¹⁾, N. Izumi¹⁾, Y. Sentoku¹⁾, H. Azechi¹⁾, K. Nishihara¹⁾, H. Shiraga¹⁾, M. Nakai¹⁾, K. Fujita¹⁾, K. Shigemori¹⁾, M. Heya³⁾, Y. Ochi¹⁾, T. Norimatsu¹⁾, K. Nagai¹⁾, Y. Izawa¹⁾, M. Nakatsuka¹⁾, N. Miyanaga¹⁾, H. Fujita¹⁾, T. Jitsuno¹⁾, S. Sakabe²⁾, H. Takabe¹⁾, M. Murakami¹⁾, H. Nagatomo¹⁾, A. Sunahara¹⁾, T. Kawamura¹⁾, S. Nakai²⁾, and C. Yamanaka^4)
 
1) Institute of Laser Engineering, Osaka University, Osaka, Japan
²⁾ Faculty of Engineering, and Institute of Laser Engineering, Osaka University, Osaka, Japan
³⁾ Institute of Free Electron Laser, Osaka University, Osaka, Japan
⁴⁾ Institute for Laser Technology, Osaka, Japan

Abstract.  ILE Osaka is concentrating on the physical elements of fast ignition aiming at the proof of principle for ignition-and-burn of direct-drive laser fusion. A 1PW laser will be introduced to fast ignition experiments by the middle of 2001. A high intensity plasma experimental research system, HIPER, has been in operation for obtaining scientific data base relevant to ignition target. By irradiating a intense short pulse onto a long scale length plasma observed are penetration of a relativistically self-focused laser beam into over-dense region without considerable energy loss in under-dense region, MeV electrons generation with conversion efficiency of 25%, heating of compressed core plasma by irradiating a 100 ps, 10¹⁷W/cm² pulse and 1 ps, 10¹⁹W/cm² pulse. In the hydrodynamic instability, the initial imprint of hydrodynamic instability and Rayleigh-Taylor growth rate at wavelength less than 10 $\mu$m have been investigated extensively.

Read the full paper in PDF format.