Investigation of ion temperature in low-density undercritical foams

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00617686" target="_blank" >RIV/68378271:_____/25:00617686 - isvavai.cz</a>

Alternative codes found

RIV/61389021:_____/25:00647876 RIV/68407700:21340/25:00380428 RIV/10974938:_____/25:25_89_01

Result on the web

<a href="https://hdl.handle.net/11104/0372418" target="_blank" >https://hdl.handle.net/11104/0372418</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6587/ada8db" target="_blank" >10.1088/1361-6587/ada8db</a>

Result language

angličtina

Original language name

Investigation of ion temperature in low-density undercritical foams

Original language description

The ion temperature in laser-heated foam materials can be considerably higher than the electron temperature due to the internal collisions of the plasma flows originating from the heterogeneous foam microstructure. Recently, we have developed a novel hybrid multiscale model for laser-foam interaction that successfully reproduces the experimentally measured heat front propagation in laser-heated subcritical foams of various densities. However, when applied to undercritical foams with average density closer to critical, the hybrid model simulations predict an ion–electron temperature ratio much larger than in any previously reported measurements and suggest that the influence of foam microstructure is more impactful for larger average densities. For such foams, the laser-driven heat front velocity was measured many times, but the ion temperature received much less attention. To investigate the ion temperature, the laser interaction with 10 mg cm−3 undercritical chlorine-doped TMPTA foams has been studied at the PALS facility, using an extended diagnostic complex emphasizing the x-ray time-resolved studies of the plasma wave propagation inside the foam and the distribution of macroscopic plasma parameters via high-resolution x-ray spectroscopy. The ion and electron temperatures have been measured from Doppler broadening and the relative intensity ratio of chlorine x-ray spectral lines. The averaged ion and electron temperature ratio ranges from 2 to 4 depending on the laser pulse energy. The simulations agree reasonably well with the experimental results.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/LM2023068" target="_blank" >LM2023068: Prague Asterix Laser System</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

1361-6587

Volume of the periodical

67

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

15

Pages from-to

025022

UT code for WoS article

001403358700001

EID of the result in the Scopus database

2-s2.0-85216182130