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Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments
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Laser-driven inertial ion focusing.

H B Zhuo1, Wei Yu, M Y Yu

  • 1National Laboratory for Parallel and Distributed Processing, School of Computer Science, National University of Defense Technology, Changsha 410073, China. zhb_pic_2d@sina.com

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|March 5, 2009
PubMed
Summary
This summary is machine-generated.

A novel Hohlraum-like target design enables a compact neutron source. Laser-driven ion compression within a hollow sphere creates a dense, hot ion spot for potential applications.

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Area of Science:

  • Plasma Physics
  • Laser-driven Fusion
  • Neutron Sources

Background:

  • Developing compact and efficient neutron sources is crucial for various scientific and industrial applications.
  • Existing methods for neutron generation often require large-scale facilities or complex setups.

Purpose of the Study:

  • To propose and investigate a simple, compact Hohlraum-like configuration for generating neutrons.
  • To explore the feasibility of using laser-plasma interactions within a hollow sphere for particle acceleration and heating.

Main Methods:

  • A laser pulse is directed into a thin-shelled hollow-sphere target through a small aperture.
  • Light pressure expels electrons from the inner shell wall, creating a space-charge field.
  • This field compresses and heats local ions, leading to inward expansion and hot spot formation.

Main Results:

  • The proposed configuration effectively traps the laser pulse within the cavity.
  • A significant compression and heating of ions occurs, forming a high-density, high-temperature ion spot at the cavity center.
  • The resulting plasma conditions are analogous to those achieved in inertial electrostatic confinement.

Conclusions:

  • The Hohlraum-like configuration offers a promising pathway towards simple and compact neutron sources.
  • This approach leverages laser-plasma interactions for efficient ion acceleration and heating.
  • Further research could explore optimizing target design and laser parameters for enhanced neutron yield.