What question did this study set out to answer?

To develop a three-dimensional model of crossed-beam energy transfer in ignition hohlraums and evaluate how laser beam smoothing and wavelength shifts influence power exchange and beam symmetry.

April 1, 2009Physics of PlasmasOpen Access

Energy transfer between laser beams crossing in ignition hohlraums

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Authors

PMP. MichelLawrence Livermore National Laboratory LDL. DivolLawrence Livermore National Laboratory EWE. A. WilliamsParsons (United States)

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Implication

Computational modeling demonstrates that minor wavelength shifts control crossed-beam energy transfer in ignition hohlraum plasmas, indicating a viable method to preserve implosion symmetry.

Key Points

To develop a three-dimensional model of crossed-beam energy transfer in ignition hohlraums and evaluate how laser beam smoothing and wavelength shifts influence power exchange and beam symmetry.
Constructed a full-scale, three-dimensional numerical model to simulate the propagation, plasma wave coupling, and energy transfer between crossing pairs of laser beams.
Incorporated laser beam smoothing techniques used in ignition experiments and evaluated wavelength detuning across multiple ignition designs.
Demonstrated that shifting laser wavelengths moves the coupling instability into or out of resonance, enabling active tuning of energy transfer between beams.
Determined that a wavelength shift of up to 2 Å between beam cones provides sufficient control to regulate energy transfer and maintain target irradiation symmetry.

Cite This Study

Michel et al. (2009) studied this question.

synapsesocial.com/papers/6a72f14bc4285d068c154b5d https://doi.org/10.1063/1.3103788

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Implication

Computational modeling demonstrates that minor wavelength shifts control crossed-beam energy transfer in ignition hohlraum plasmas, indicating a viable method to preserve implosion symmetry.

Energy transfer between laser beams crossing in ignition hohlraums

Discussion

Member takes

Implication

Key Points

Cite This Study

Energy transfer between laser beams crossing in ignition hohlraums

Discussion

Member takes

Implication

Key Points

Cite This Study

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