Production of sub-gigabar pressures by a hyper-velocity impact in the collider using laser-induced cavity pressure acceleration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00313493" target="_blank" >RIV/68407700:21340/17:00313493 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/laser-and-particle-beams/article/production-of-subgigabar-pressures-by-a-hypervelocity-impact-in-the-collider-using-laserinduced-cavity-pressure-acceleration/88C8BFEAF8F4A40B25E1D504D650BF2B" target="_blank" >https://www.cambridge.org/core/journals/laser-and-particle-beams/article/production-of-subgigabar-pressures-by-a-hypervelocity-impact-in-the-collider-using-laserinduced-cavity-pressure-acceleration/88C8BFEAF8F4A40B25E1D504D650BF2B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0263034617000660" target="_blank" >10.1017/S0263034617000660</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Production of sub-gigabar pressures by a hyper-velocity impact in the collider using laser-induced cavity pressure acceleration

Popis výsledku v původním jazyce

Production of high dynamic pressure using a strong shock wave is a topic of high relevance for high energy density physics, inertial confinement fusion and materials science. Although the pressures in the multi-Mbar range can be produced by the shocks generated with a large variety of methods, the higher pressures, in the sub-Gbar or Gbar range, are achievable only with nuclear explosions or laser-driven shocks. However, the laser-to-shock energy conversion efficiency in the laser-based methods currently applied is low and, as a result, multi-kJ multi-beam lasers have to be used to produce such extremely high pressures. In this paper, the generation of high-pressure shocks in the newly proposed collider in which the projectile impacting a solid target is driven by the laser-induced cavity pressure acceleration (LICPA) mechanism is investigated using two-dimensional hydrodynamic simulations. A special attention is paid to the dependence of shock parameters and the laser-to-shock energy conversion efficiency on the impacted target material and the laser driver energy. It has been found that both in case of low-density and high-density solid targets the shock pressures in the sub-Gbar range can be produced in the LICPA-based collider with the laser energy of only a few hundreds of joules, and the laser-to-shock energy conversion efficiency can reach values of 10-20 %, by an order of magnitude higher than the conversion efficiencies achieved with other laser-based methods used so far.

Název v anglickém jazyce

Production of sub-gigabar pressures by a hyper-velocity impact in the collider using laser-induced cavity pressure acceleration

Popis výsledku anglicky

Production of high dynamic pressure using a strong shock wave is a topic of high relevance for high energy density physics, inertial confinement fusion and materials science. Although the pressures in the multi-Mbar range can be produced by the shocks generated with a large variety of methods, the higher pressures, in the sub-Gbar or Gbar range, are achievable only with nuclear explosions or laser-driven shocks. However, the laser-to-shock energy conversion efficiency in the laser-based methods currently applied is low and, as a result, multi-kJ multi-beam lasers have to be used to produce such extremely high pressures. In this paper, the generation of high-pressure shocks in the newly proposed collider in which the projectile impacting a solid target is driven by the laser-induced cavity pressure acceleration (LICPA) mechanism is investigated using two-dimensional hydrodynamic simulations. A special attention is paid to the dependence of shock parameters and the laser-to-shock energy conversion efficiency on the impacted target material and the laser driver energy. It has been found that both in case of low-density and high-density solid targets the shock pressures in the sub-Gbar range can be produced in the LICPA-based collider with the laser energy of only a few hundreds of joules, and the laser-to-shock energy conversion efficiency can reach values of 10-20 %, by an order of magnitude higher than the conversion efficiencies achieved with other laser-based methods used so far.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/LD14089" target="_blank" >LD14089: Rozvoj fyziky a vědecké komunity pro inerciální fúzi v době jejího zapálení na NIF</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Laser and Particle Beams

ISSN

0263-0346

e-ISSN

1469-803X

Svazek periodika

35

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

619-630

Kód UT WoS článku

000418321900008

EID výsledku v databázi Scopus

2-s2.0-85030829937