Fast heating scalable to laser fusion ignition

R. Kodama (), H. Shiraga, K. Shigemori, Y. Toyama, S. Fujioka, H. Azechi, H. Fujita, H. Habara, T. Hall, Y. Izawa, T. Jitsuno, Y. Kitagawa, K. M. Krushelnick, K. L. Lancaster, K. Mima, K. Nagai, M. Nakai, H. Nishimura, T. Norimatsu, P. A. Norreys, S. Sakabe, K. A. Tanaka, A. Youssef, M. Zepf and T. Yamanaka
Additional contact information
R. Kodama: Institute of Laser Engineering, Osaka University
H. Shiraga: Rutherford Appleton Laboratory
K. Shigemori: Rutherford Appleton Laboratory
Y. Toyama: Rutherford Appleton Laboratory
S. Fujioka: Rutherford Appleton Laboratory
H. Azechi: Rutherford Appleton Laboratory
H. Fujita: Rutherford Appleton Laboratory
H. Habara: Rutherford Appleton Laboratory
T. Hall: University of Essex
Y. Izawa: Blacket Laboratory, Imperial College
T. Jitsuno: Blacket Laboratory, Imperial College
Y. Kitagawa: Blacket Laboratory, Imperial College
K. M. Krushelnick: Blacket Laboratory, Imperial College
K. L. Lancaster: University of Essex
K. Mima: University of Essex
K. Nagai: University of Essex
M. Nakai: University of Essex
H. Nishimura: University of Essex
T. Norimatsu: University of Essex
P. A. Norreys: The Fast-Ignitor Consortium
S. Sakabe: Institute of Laser Engineering and Faculty of Engineering, Osaka University
K. A. Tanaka: Institute of Laser Engineering and Faculty of Engineering, Osaka University
A. Youssef: Queen's University of Belfast
M. Zepf: Queen's University of Belfast
T. Yamanaka: Queen's University of Belfast

Nature, 2002, vol. 418, issue 6901, 933-934

Abstract: Abstract Rapid heating of a compressed fusion fuel by a short-duration laser pulse is a promising route to generating energy by nuclear fusion1, and has been demonstrated on an experimental scale using a novel fast-ignitor geometry2. Here we describe a refinement of this system in which a much more powerful, pulsed petawatt (1015 watts) laser creates a fast-heated core plasma that is scalable to full-scale ignition, significantly increasing the number of fusion events while still maintaining high heating efficiency at these substantially higher laser energies. Our findings bring us a step closer to realizing the production of relatively inexpensive, full-scale fast-ignition laser facilities.

Date: 2002
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DOI: 10.1038/418933a

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