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Laser-confined fusion.

Baifei Shen1, Xiaomei Zhang, M Y Yu

  • 1Shanghai Institute of Optics and Fine Mechanics, P. O. Box 800-211, Shanghai 201800, China.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 9, 2005
PubMed
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This study proposes a novel method for generating neutrons using intense laser pulses to compress and confine a fuel foil. The approach demonstrates the potential for efficient neutron production, crucial for various scientific applications.

Area of Science:

  • Nuclear Physics
  • Plasma Physics
  • Laser-Matter Interaction

Background:

  • Neutron production is essential for applications in nuclear energy, materials science, and fundamental research.
  • Current methods for neutron generation face limitations in efficiency and scalability.
  • Advanced techniques are needed to enhance neutron yields for broader scientific utilization.

Purpose of the Study:

  • To propose and evaluate a novel approach for efficient, large-scale neutron production.
  • To investigate the feasibility of using intense laser pulses for neutron generation.
  • To determine the neutron yield achievable with specific laser and fuel parameters.

Main Methods:

  • Utilizing two intense, circularly polarized laser pulses.
  • Compressing a deuterium-tritium fuel foil with a specific areal density (3.3 x 10^18 cm^-2).

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  • Confining the resulting plasma within the laser pulse interaction zone.

    • Main Results:

    • Demonstrated a method for producing a significant quantity of neutrons.
    • Achieved approximately 4.2 x 10^6 neutrons per joule of input laser energy.
    • The proposed laser-plasma interaction shows promise for efficient neutron generation.

    Conclusions:

    • The proposed laser-driven approach offers a viable pathway for enhanced neutron production.
    • This method has the potential to significantly impact fields requiring substantial neutron sources.
    • Further research can optimize parameters for even greater neutron yields.