Quasi-monoenergetic ion generation by hole-boring radiation pressure acceleration in inhomogeneous plasmas using tailored laser pulses

Weng, Shangkun; Murakami, M.; Azechi, H.; Wang, J. W.; Tasoko, N.; Chen, M.; Sheng, Zheng-Ming; Mulser, P.; Yu, Wei; Shen, Baifei

doi:10.1063/1.4861339

Cited by 23 publications

(24 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As long as the thickness of the shock wave l s is much smaller than the density gradient L n , i.e., L n l s , we can assume that the target is uniform in the shock wave domain. Looking at our Table 1 one gets l s ∼ 1 µm, which is much smaller than the density gradient L n ∼ 20λ L derived in PIC simulations [48,50] . The solution suggested in this paper, like all other solutions to the energy problem, is extremely difficult scientifically, and a lot of money and enormous optimism is required for a positive solution.…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Finally we must mention a very recent FI proposal [48] using a laser system similar to our laser parameters estimated in Section 4. In particular this scheme requires a temporally tailored pulse with an energy of 65 kJ of duration 1.48 ps with a maximum intensity of 4 × 10 .…”

Section: Summary and Discussionmentioning

confidence: 99%

“…This model is based on the use of a hole-boring [39,49,50] phenomenon that enables the HPL beam to penetrate beyond the critical density. As early as 1971 it was analytically calculated [49] that the condition for a laser to propagate in non-uniform plasma with an electron density n e and density gradient scale length L n beyond the electron critical density n c is given by 1 4π [39,48,50] derived L n ∼ 20λ L , implying a laser penetration up to approximately 10 . The quasi mono-energetic ions [48] generated by the tailored laser pulses penetrate beyond this density to ignite the pre-compressed pellet.…”

Section: Summary and Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Ultrafast ignition with relativistic shock waves induced by high power lasers

Eliezer

Nissim²,

Pinhasi³

et al. 2014

High Pow Laser Sci Eng

View full text Add to dashboard Cite

In this paper we consider laser intensities greater than 10 16 W cm −2 where the ablation pressure is negligible in comparison with the radiation pressure. The radiation pressure is caused by the ponderomotive force acting mainly on the electrons that are separated from the ions to create a double layer (DL). This DL is accelerated into the target, like a piston that pushes the matter in such a way that a shock wave is created. Here we discuss two novel ideas. Firstly, the transition domain between the relativistic and non-relativistic laser-induced shock waves. Our solution is based on relativistic hydrodynamics also for the above transition domain. The relativistic shock wave parameters, such as compression, pressure, shock wave and particle flow velocities, sound velocity and rarefaction wave velocity in the compressed target, and temperature are calculated. Secondly, we would like to use this transition domain for shockwave-induced ultrafast ignition of a pre-compressed target. The laser parameters for these purposes are calculated and the main advantages of this scheme are described. If this scheme is successful a new source of energy in large quantities may become feasible.

show abstract

Section: Summary and Discussionmentioning

confidence: 99%

Section: Summary and Discussionmentioning

confidence: 99%

Section: Summary and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Ultrafast ignition with relativistic shock waves induced by high power lasers

Eliezer

Nissim²,

Pinhasi³

et al. 2014

High Pow Laser Sci Eng

View full text Add to dashboard Cite

show abstract

“…Ion fast ignition [4,5] offers several advantages over EFI, such as generation of collimated beams, well known interaction with the plasma and higher flexibility. Some examples of such a flexibility are the control of ion spectra [6,7], the possibility of choosing the optimal ion species [8,9], including deuterium ions [10], and the use of multiple beams for target irradiation [9,11,12]. IFI progress so far can be summarized by the experimental achievement of the required ion energies, high conversion efficiencies [13] and ion beam focusing [14].…”

Section: Introductionmentioning

confidence: 99%

Ion beam requirements for fast ignition of inertial fusion targets

Honrubia

Murakami

2015

Physics of Plasmas

Self Cite

View full text Add to dashboard Cite

Ion beam requirements for fast ignition are investigated by numerical simulation taking into account new effects such as ion beam divergence not included before. We assume that ions are generated by the TNSA scheme in a curved foil placed inside a re-entrant cone and focused on the cone apex or beyond. From the focusing point to the compressed core ions propagate with a given divergence angle. Ignition energies are obtained for two compressed fuel configurations heated by proton and carbon ion beams. The dependence of the ignition energies on the beam divergence angle and on the position of the ion beam focusing point have been analyzed. Comparison between TNSA and quasi-monoenergetic ions is also shown.

show abstract

“…The propagation of short intense lasers in underdense plasma has been intensively studied, since it is closely related to a number of applications such as laser-driven particle acceleration 1 , advanced concept of inertial confined fusion including fast ignition with electron or ion beams [2][3][4] , shock ignition 5 , impact ignition 6 , and so on. Earlier studies 7 on short-pulse laser plasma interactions are mostly based on the cold plasma model assuming that the plasma electrons cannot be heated to high temperature by short pulse lasers in a short interval of time.…”

Section: Introductionmentioning

confidence: 99%

Effects of relativistic electron temperature on parametric instabilities for intense laser propagation in underdense plasma

et al. 2014

View full text Add to dashboard Cite

This version is available at https://strathprints.strath.ac.uk/50988/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Effects of relativistic electron temperature on stimulated Raman scattering and stimulated Brillouin scattering instabilities for high intensity lasers propagating in underdense plasma are studied theoretically and numerically. The dispersion relations for these instabilities are derived from the relativistic fluid equation. For a wide range of laser intensity and electron temperature, it is found that the maximum growth rate and the instability region in k-space can be reduced at relativistic electron temperature. Particle-in-cell simulations are carried out, which confirm the theoretical analysis. Effects of relativistic electron temperature on parametric instabilities for intense laser propagation in underdense plasma

show abstract

Quasi-monoenergetic ion generation by hole-boring radiation pressure acceleration in inhomogeneous plasmas using tailored laser pulses

Cited by 23 publications

References 72 publications

Ultrafast ignition with relativistic shock waves induced by high power lasers

Ultrafast ignition with relativistic shock waves induced by high power lasers

Ion beam requirements for fast ignition of inertial fusion targets

Effects of relativistic electron temperature on parametric instabilities for intense laser propagation in underdense plasma

Contact Info

Product

Resources

About