Longitudinal instabilities of the experimentally generated laser accelerated ion beam relevant to fast ignition

Khoshbinfar, Soheil

doi:10.1016/j.nima.2017.08.029

Cited by 1 publication

(1 citation statement)

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“…The latter envisioned that the growth rate must be controlled or even damped to acquire enhanced stability. This challenge tested analytically by Khoshbinfar for two different heavy ions of C 6+ (energy spread 10%) and Al 11+ (energy spread 20%) at the pre-compressed DT plasma regime 45 . These results declared that in FI by laser-accelerated C/Al ions, benefitting from higher energies (such as those mentioned in reference 45), and subsequently a greater degree of ionization may play a more prominent role in reducing the micro-instabilities arise at the ignition/burn phase of fuel plasma.…”

Section: Core Heating By the Laser-accelerated Aluminum Beammentioning

confidence: 99%

Simulation study of cone-in-shell target for indirect-drive ion fast ignition concept under the theory of an effective interaction potential

Mehrangiz

Khoshbinfar

2023

Sci Rep

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The stopping power of charged particles released by the deuterium–tritium nuclear reactions has been extensively studied in the weakly to moderately coupled plasma regimes. We have modified the conventional effective potential theory (EPT) stopping framework to have a practical connection to investigate the ions energy loss characteristics in fusion plasma. Our modified EPT model differs from the original EPT framework by a coefficient of order $$1 + {2 \mathord{\left/ {\vphantom {2 {(5}}} \right. \kern-0pt} {(5}}\ln \overline{\Xi }),$$ 1 + 2 / ( 5 ln Ξ ¯ ) , ($$\ln \overline{\Xi }$$ ln Ξ ¯ is a velocity-dependent generalization of the Coulomb logarithm). Molecular dynamics simulations agree well with our modified stopping framework. To study the role of related stopping formalisms in ion fast ignition, we simulate the cone-in-shell configuration under laser-accelerated aluminum beam incidence. In ignition/burn phase, the performance of our modified model is in agreement with its original form and the conventional Li-Petrasso (LP) and Brown-Preston-Singleton (BPS) theories. The LP theory indicates the fastest rate in providing ignition/burn condition. Our modified EPT model with a discrepancy of $$\sim$$ ∼ 9%, has the most agreement with LP theory, while that of the original EPT (with a discrepancy of $$\sim$$ ∼ 47% to LP) and BPS (with a discrepancy of $$\sim$$ ∼ 48% to LP) methods maintain the third and fourth contributions in accelerating the ignition time, respectively.

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Section: Core Heating By the Laser-accelerated Aluminum Beammentioning

confidence: 99%