English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In laser-drive ICF, hybrid drive (HD) combined direct drive (DD) and indirectdrive (ID) offers a smoothed HD pressure $P_{HD}$, far higher than the ablationpressure in ID and DD, to suppress hydrodynamic instabilities. In this letter,simulations of a new robust HD ignition target show that maximal HD pressure ashigh as $P_{HD} \sim$ 650 Mbar driven by a novel "bulldozer" effect isachieved, resulting in nonstagnation hotspot ignition at the convergence ratio$C_r \sim $23, and finally, fusion energy gain $\sim$ 10 in total laser energy= 1.42 MJ. Two-dimensional simulations have confirmed that hydrodynamicinstabilities are suppressed. A well-fitted scale of maximal HD pressure$P_{HD}$ (Mbar)= $BE_{DD}^{1/4} T_r$ is found from simulations of differenttargets and laser energies as long as $T_r> 160$ eV, where B is the constantdepending on ablator materials, $E_{DD}$ in kJ is DD laser energy and $T_r$ in100 eV is radiation temperature depending on ID laser energy $E_{ID}$.$P_{HD}\geq$ 450 Mbar is requested for hotspot ignition. This scale from"bulldozer" effect is also available as $E_{DD}$ is reduced to kJ. Experimentshave verified $P_{HD}$ about 3.5 times radiation ablation pressure for CHablator using $E_{ID}=43$ kJ ($T_r \simeq$200 eV) and $E_{DD}$=3.6 kJ, alsoshown that both backscattering fraction and hot-electron energy fraction for DDlaser intensity $\sim 1.8 \times 10^{15} {\rm w\cdot cm^{-2}}$ are about athird of the traditional DD laser-plasma interaction

Hybrid-drive pressure suppressing implosion instabilities and offering  nonstagnation hotspot ignition with low convergence ratio for high-gain  inertial fusion