Optimization of laser illumination configuration for directly driven inertial confinement fusion

Murakami, M.; Nishi, Daiki

doi:10.1016/j.mre.2016.12.002

Cited by 22 publications

(16 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2). It should be noted that controlling both the temporal and spacial profiles of the incident laser pulses also plays a crucial role to improve the implosion uniformity 54,55 .…”

Section: Discussionmentioning

confidence: 99%

Generation of megatesla magnetic fields by intense-laser-driven microtube implosions

Murakami

Honrubia

Weichman

et al. 2020

Sci Rep

View full text Add to dashboard Cite

A microtube implosion driven by ultraintense laser pulses is used to produce ultrahigh magnetic fields. Due to the laser-produced hot electrons with energies of mega-electron volts, cold ions in the inner wall surface implode towards the central axis. By pre-seeding uniform magnetic fields on the kilotesla order, the Lorenz force induces the Larmor gyromotion of the imploding ions and electrons. Due to the resultant collective motion of relativistic charged particles around the central axis, strong spin current densities of $$\sim$$ ∼ peta-ampere/$$\hbox {cm}^{2}$$ cm 2 are produced with a few tens of nm size, generating megatesla-order magnetic fields. The underlying physics and important scaling are revealed by particle simulations and a simple analytical model. The concept holds promise to open new frontiers in many branches of fundamental physics and applications in terms of ultrahigh magnetic fields.

show abstract

“…2). It should be noted that controlling both the temporal and spacial profiles of the incident laser pulses also plays a crucial role to improve the implosion uniformity 54,55 .…”

Section: Discussionmentioning

confidence: 99%

Generation of megatesla magnetic fields by intense-laser-driven microtube implosions

Murakami

Honrubia

Weichman

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Since the geometric parameters of metamaterials can be specifically optimized, desirable properties can be acquired by changing the topology and sizes [21][22][23][24][25]. Due to their ability to control wave-matter interactions [26][27][28][29][30], metamaterials have been proven to be an important concept for the development of functional materials [31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

A Review of Tunable Acoustic Metamaterials

et al. 2018

View full text Add to dashboard Cite

Acoustic metamaterial science is an emerging field at the frontier of modern acoustics. It provides a prominent platform for acoustic wave control in subwavelength-sized metadevices or metasystems. However, most of the metamaterials can only work in a narrow frequency band once fabricated, which limits the practical application of acoustic metamaterials. This paper highlights some recent progress in tunable acoustic metamaterials based on various modulation techniques. Acoustic metamaterials have been designed to control the attenuation of acoustic waves, invisibility cloaking, and acoustic wavefront engineering, such as focusing via manipulating the acoustic impedance of metamaterials. The reviewed techniques are promising in extending the novel acoustics response into wider frequency bands, in that tunable acoustic metamaterials may be exploited for unusual applications compared to conventional acoustic devices.

show abstract

“…In the direct drive approach, laser beams are directly aimed at a spherical target containing fusion fuel that is typically from the emulsion droplet prepared by the microfluidics [8][9][10][11]. In the indirect drive approach [12,13], energy from a laser is first absorbed by a typically cylindrical-shaped enclosure termed as a hohlraum to produce X-rays using the high-Z material inside the hohlraum to irradiate the target [14,15]. Given the relaxed requirements on laser-beam uniformity, the indirect drive approach is the subject of intense interest in ICF recently.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Gas Filling and Leaking in Inertial Confinement Fusion Hohlraum

2018

Sustainability

View full text Add to dashboard Cite

The gas filling and retention of inertial confinement fusion (ICF) hohlraum is an important issue in ICF studies. In this study, a theoretical model of gas filling and leaking processes for ICF hohlraum is developed based on the unified flow theory. The effects of the fill tube size and the filling pressure on the gas filling and leaking performance are investigated. The results indicate that an increase in the variation rate of the filling/leaking pressure leads to a larger maximum pressure difference between the inside and outside of the ICF hohlraum during the filling/leaking process. The critical pressure difference of the filling process is nearly equal to that of the leaking process. Increase in fill tube diameter and decrease in its length both lead to a lower probability of the rupture of polymeric films at two ends of the hohlraum, and thus increases the security of the hohlraum. In addition, a departure in cross sectional shape of fill tube from circle to rectangle triggers an increase in pressure difference between the inside and outside of the ICF hohlraum, which raises the risk of polymeric films rupture and decreases the security of the hohlraum structure.

show abstract

Optimization of laser illumination configuration for directly driven inertial confinement fusion

Cited by 22 publications

References 43 publications

Generation of megatesla magnetic fields by intense-laser-driven microtube implosions

Generation of megatesla magnetic fields by intense-laser-driven microtube implosions

A Review of Tunable Acoustic Metamaterials

Theoretical Investigation of Gas Filling and Leaking in Inertial Confinement Fusion Hohlraum

Contact Info

Product

Resources

About