Energetics and dynamics of Coulomb explosion of highly charged clusters

Schek, Israel; Jortner, Joshua

doi:10.1063/1.474911

Cited by 120 publications

(77 citation statements)

References 53 publications

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“…Depending on the laser and target parameters different regimes of acceleration appear -from acceleration at the target surface called the Target Normal Sheath Acceleration (TNSA) [13,15,16] through the Coulomb explosion [17][18][19][20] to radiation pressure dominance acceleration (RPDA) regime [21][22][23][24]. The ion acceleration regimes are shown in the plane of the laser intensitythe surface density n e l 0 of the target in Fig.…”

Section: Introductionmentioning

confidence: 99%

Effect of electromagnetic pulse transverse inhomogeneity on ion acceleration by radiation pressure

et al. 2015

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In the ion acceleration by radiation pressure a transverse inhomogeneity of the electromagnetic pulse results in the displacement of the irradiated target in the off-axis direction limiting achievable ion energy. This effect is described analytically within the framework of the thin foil target model and with the particle-in-cell simulations showing that the maximum energy of accelerated ions decreases while the displacement from the axis of the target initial position increases. The results obtained can be applied for optimization of the ion acceleration by the laser radiation pressure with the mass limited targets.

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Section: Introductionmentioning

confidence: 99%

Effect of electromagnetic pulse transverse inhomogeneity on ion acceleration by radiation pressure

et al. 2015

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“…Substituting Eqs. (19,20) in the equation of motion (15), we get the following equation for the expanding foil under the action of a diverging laser pulse:…”

Section: Transverse Expansion Effectmentioning

confidence: 99%

“…in the domain (II), the laser radiation is so intense that it blows out almost all electrons from the irradiated region of the target. The remaining ions undergo fast expansion, known as Coulomb explosion, due to the repelling of noncompensated positive electric charges [20]. At the opaqueness/transparency threshold, in the vicinity of the a 0 /ε p = 1 line in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The basic mechanisms of acceleration are (i) Target Normal Sheath Acceleration (TNSA) [19], (ii) Coulomb Explosion (CE) [20], (iii) Radiation Pressure Acceleration (RPA) [21], and (iv) Magnetic Vortex Acceleration (MVA) [22][23][24]. There are also several composite mechanisms, which are the either the combinations of basic ones or somehow the enhancement of the basic ones, such as Break-Out-Afterburner (BOA) [25], Shock Wave Acceleration (SWA) [26], Relativistic Transparency (RT) [27], and Directed Coulomb Explosion (DCE) [28].…”

Section: Introductionmentioning

confidence: 99%

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Radiation pressure acceleration: The factors limiting maximum attainable ion energy

et al. 2016

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Radiation pressure acceleration (RPA) is a highly efficient mechanism of laser-driven ion acceleration, with with near complete transfer of the laser energy to the ions in the relativistic regime. However, there is a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser. The tightly focused laser pulses have group velocities smaller than the vacuum light speed, and, since they offer the high intensity needed for the RPA regime, it is plausible that group velocity effects would manifest themselves in the experiments involving tightly focused pulses and thin foils. However, in this case, finite spot size effects are important, and another limiting factor, the transverse expansion of the target, may dominate over the group velocity effect. As the laser pulse diffracts after passing the focus, the target expands accordingly due to the transverse intensity profile of the laser. Due to this expansion, the areal density of the target decreases, making it transparent for radiation and effectively terminating the acceleration. The off-normal incidence of the laser on the target, due either to the experimental setup, or to the deformation of the target, will also lead to establishing a limit on maximum ion energy.

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“…The molecular dynamic approach to laser-cluster interactions was initiated by Last and Jortner [10][11][12][13]. They have further shed light on the techniques which are very essential to perform the MD simulation in an efficient manner, like the lumping of actual particles to form a one macro-particle with same charge to mass ratio [14].…”

Section: Introductionmentioning

confidence: 99%

Parallel implementation of three-dimensional molecular dynamic simulation for laser-cluster interaction

Holkundkar

2013

Physics of Plasmas

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The objective of this article is to report the parallel implementation of the 3D molecular dynamic simulation code for laser-cluster interactions. The benchmarking of the code has been done by comparing the simulation results with some of the experiments reported in the literature. Scaling laws for the computational time is established by varying the number of processor cores and number of macroparticles used. The capabilities of the code are highlighted by implementing various diagnostic tools. To study the dynamics of the laser-cluster interactions, the executable version of the code is available from the author.

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Energetics and dynamics of Coulomb explosion of highly charged clusters

Cited by 120 publications

References 53 publications

Effect of electromagnetic pulse transverse inhomogeneity on ion acceleration by radiation pressure

Effect of electromagnetic pulse transverse inhomogeneity on ion acceleration by radiation pressure

Radiation pressure acceleration: The factors limiting maximum attainable ion energy

Parallel implementation of three-dimensional molecular dynamic simulation for laser-cluster interaction

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