Two-dimensional quantum hydrodynamic model for the heating of a solid target using a Gaussian cluster

Zhang, Ya; Song, Yuan-Hong; Zhao, Yongtao; Wang, You‐Nian

doi:10.1017/s0263034612000559

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…As a powerful research method, QHD theory is widely used in plasma research [43][44][45]. Li et al [4,5,46] conducted a series of studies on the stopping power of charged particles above the 2DQEG using linearized QHD theory, which is consistent with dielectric response theory and experimental results.…”

Section: Mathematical Modelmentioning

confidence: 82%

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Yang

Zhang

et al. 2021

Laser Part. Beams

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The perturbation electron density and stopping power caused by the movement of charged particles above two-dimensional quantum electron gases (2DQEG) have been studied in numerous works using the quantum hydrodynamic (QHD) theory. In this paper, the QHD is modified by introducing the two-dimensional electron exchange-correlation potential at high density V x c 2 DH and the pump wave modulations. Based on the modified QHD, the perturbation electron density and stopping power are calculated for pump waves with various parameters. The results show that the stopping power values are more accurate after considering V x c 2 DH . Under the modulation of pump waves with the wavelength from 0.1 nm to 0.1 cm , the perturbation electron density of 2DQEG and the stopping power of charged particles show periodic changes. Under the modulation of pump waves with λ = 1.76 × 10 − 4 cm and Φ 0 = 2 × 10 10 e / λ f , the average stopping power with respect to the time phase θ becomes negative, which means that the charged particles will gain energy and can be accelerated. This is a new phenomenon in the fields of 2DQEG and of great significance in surface physics and surface modification in nanoelectronic devices with beam matter interactions.

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Section: Mathematical Modelmentioning

confidence: 82%

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Yang

Zhang

et al. 2021

Laser Part. Beams

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“…In our previous works, we simulated the wake potential and energy loss of a proton propagating in a 1D solid target by using the 1D QHD theory [24] . Again, the twodimensional (2D) QHD model was also employed to study a proton cluster [37] and a continuous proton beam [38] interacting with a solid aluminum target. The continuous proton beam was treated as a continuous fluid in the above work [38] due to the pure hydrodynamic model.…”

Section: Introductionmentioning

confidence: 99%

Numerical Approach of Interactions of Proton Beams and Dense Plasmas with Quantum-Hydrodynamic/Particle-in-Cell Model

Zhang

Jiang

et al. 2016

Plasma Sci. Technol.

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A one dimensional quantum-hydrodynamic/particle-in-cell (QHD/PIC) model is used to study the interaction process of an intense proton beam (injection density of 10 17 cm −3) with a dense plasma (initial density of ∼ 10 21 cm −3), with the PIC method for simulating the beam particle dynamics and the QHD model for considering the quantum effects including the quantum statistical and quantum diffraction effects. By means of the QHD theory, the wake electron density and wakefields are calculated, while the proton beam density is calculated by the PIC method and compared to hydrodynamic results to justify that the PIC method is a more suitable way to simulate the beam particle dynamics. The calculation results show that the incident continuous proton beam when propagating in the plasma generates electron perturbations as well as wakefields oscillations with negative valleys and positive peaks where the proton beams are repelled by the positive wakefields and accelerated by the negative wakefields. Moreover, the quantum correction obviously hinders the electron perturbations as well as the wakefields. Therefore, it is necessary to consider the quantum effects in the interaction of a proton beam with cold dense plasmas, such as in the metal films.

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Two-dimensional quantum hydrodynamic model for the heating of a solid target using a Gaussian cluster

Cited by 2 publications

References 30 publications

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Numerical Approach of Interactions of Proton Beams and Dense Plasmas with Quantum-Hydrodynamic/Particle-in-Cell Model

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