Enhanced laser ion acceleration with a multi-layer foam target assembly

Yazdani, Elnaz; Sadighi‐Bonabi, R.; Afarideh, H.; Yazdanpanah, J.; Hora, Heinrich

doi:10.1017/s0263034614000342

Cited by 13 publications

(6 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that our DT scheme is in some sense similar to the case using multi-layer foam target built upon the so-called dielectric mechanism. 32 Both involves the enhance of the charge separation field by adding extra layers. But in our scheme, because much more intense laser pulse is used, it could directly drive the electrons out of the pre-target, whose density is also much higher than those in the foams.…”

Section: -4mentioning

confidence: 99%

“…But in our scheme, because much more intense laser pulse is used, it could directly drive the electrons out of the pre-target, whose density is also much higher than those in the foams. 32 Moreover, in the 2D situation, our target density is deliberately chosen to match the super-Gaussian laser intensity profile in the transverse direction in order to get a well-collimated high-energy electron bunch. All these considerations guarantee that we don't need the multi-layer foams to accelerate the extra electrons layer by layer before it reaches the main target.…”

Section: -4mentioning

confidence: 99%

See 1 more Smart Citation

Improving the quality of proton beams via double targets driven by an intense circularly polarized laser pulse

Wang

et al. 2016

AIP Advances

View full text Add to dashboard Cite

A new scheme is proposed to improve the quality of proton beams via ultra-intense laser pulse interacting with double plasma targets, which consist of a pre-target with relatively low density and a main target with high density. Both one- and two-dimensional Particle-in-Cell simulations show that, the using of an appropriate pre-target can help to obtain a much stronger longitudinal charge separation field in contrast to using only the main target. And proton beam with lower momentum divergence, better monochromaticity and collimation, as well as higher current density is generated. Moreover, due to the strengthened coupling between the laser pulse and targets, the energy conversion from laser pulse to protons is also increased.

show abstract

Section: -4mentioning

confidence: 99%

Section: -4mentioning

confidence: 99%

Improving the quality of proton beams via double targets driven by an intense circularly polarized laser pulse

Wang

et al. 2016

AIP Advances

View full text Add to dashboard Cite

show abstract

“…Finally it should be mentioned that the genuine hydrodynamic computation for HB11 laser fusion are going on to show their value [83] parallel to the wide spread PIC (particle in cell) computations where now the dielectric explosion (Fig. 2) is resulting [84][85] [86] above the simplified radiation pressure push at low density plasmas, and supporting the result [86] how the dielectric effects due to inhomogeneous plasma densities increase the ion energies in nonlinear force driven plasma blocks at essentially higher densities [87]. Basic deviations from the three-alpha HB11 reaction could be excluded for very short-term interactions [88].…”

Section: Summary About the Boron Laser Fusion Reactormentioning

confidence: 79%

Extreme laser pulses for possible development of boron fusion power reactors for clean and lasting energy

Hora

Eliezer²,

Kirchhoff³

et al. 2017

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

Extreme laser pulses driving non-equilibrium processes in high density plasmas permit an increase of the fusion of hydrogen with the boron isotope 11 by nine orders of magnitude of the energy gains above the classical values. This is the result of initiating the reaction by non-thermal ultrahigh acceleration of plasma blocks by the nonlinear (ponderomotive) force of the laser field in addition to the avalanche reaction that has now been experimentally and theoretically manifested. The design of a very compact fusion power reactor is scheduled to produce then environmentally fully clean and inexhaustive generation of energy at profitably low costs. The reaction within a volume of cubic millimetres during a nanosecond can only be used for controlled power generation.

show abstract

“…2010; Yazdani et al. 2014). At the extreme intensities reaching laser irradiances , the solid target is ionized rapidly and the electrons in the generated plasma are accelerated to such ultrarelativistic energies that the electric field they experience in their rest frame may reach the critical or Schwinger field of quantum electrodynamics (QED), (Schwinger 1951).…”

Section: Introductionmentioning

confidence: 99%

Plasma scale length and quantum electrodynamics effects on particle acceleration at extreme laser plasmas

Culfa

Sagir

2021

J. Plasma Phys.

View full text Add to dashboard Cite

In this work, simulations of multipetawatt lasers at irradiances ${\sim }10^{23} \ \mathrm {W}\ \mathrm {cm}^{-2}$ , striking solid targets and implementing two-dimensional particle-in-cell code was used to study particle acceleration. Preformed plasma at the front surface of a solid target increases both the efficiency of particle acceleration and the reached maximum energy by the accelerated charged particles via nonlinear plasma processes. Here, we have investigated the preformed plasma scale length effects on particle acceleration in the presence and absence of nonlinear quantum electrodynamic (QED) effects, including quantum radiation reaction and multiphoton Breit–Wheeler pair production, which become important at irradiances ${\sim } 10^{23}\ \mathrm {W}\ \mathrm {cm}^{-2}$ . Our results show that QED effects help particles gain higher energies with the presence of preformed plasma. In the results for all cases, preplasma leads to more efficient laser absorption and produces more energetic charged particles, as expected. In the case where QED is included, however, physical mechanisms changed and generated secondary particles ( $\gamma$ -rays and positrons) reversing this trend. That is, the hot electrons cool down due to QED effects, while ions gain more energy due to different acceleration methods. It is found that more energetic $\gamma$ -rays and positrons are created with increasing scale length due to high laser conversion efficiency ( ${\sim }$ 24 % for $\gamma$ -rays and $\sim$ 4 % for positrons at $L = 7\ \mathrm {\mu }\textrm {m}$ scale length), which affects the ion and electron acceleration mechanisms. It is also observed that the QED effect reduces the collimation of angular distribution of accelerated ions because the dominant ion acceleration mechanism is changing when QED is involved in the process.

show abstract

Enhanced laser ion acceleration with a multi-layer foam target assembly

Cited by 13 publications

References 41 publications

Improving the quality of proton beams via double targets driven by an intense circularly polarized laser pulse

Improving the quality of proton beams via double targets driven by an intense circularly polarized laser pulse

Extreme laser pulses for possible development of boron fusion power reactors for clean and lasting energy

Plasma scale length and quantum electrodynamics effects on particle acceleration at extreme laser plasmas

Contact Info

Product

Resources

About