Simulations of bremsstrahlung emission in ultra-intense laser interactions with foil targets

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00501498" target="_blank" >RIV/68378271:_____/18:00501498 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21340/18:00329206

Result on the web

<a href="http://dx.doi.org/10.1088/1361-6587/aab4c3" target="_blank" >http://dx.doi.org/10.1088/1361-6587/aab4c3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6587/aab4c3" target="_blank" >10.1088/1361-6587/aab4c3</a>

Result language

angličtina

Original language name

Simulations of bremsstrahlung emission in ultra-intense laser interactions with foil targets

Original language description

Bremsstrahlung emission from interactions of short ultra-intense laser pulses with solid foils is studied using particle-in-cell (PIC) simulations. A module for simulating bremsstrahlung has been implemented in the PIC loop to self-consistently account for the dynamics of the laser-plasma interaction, plasma expansion, and the emission of gamma ray photons. This module made it possible to study emission from thin targets, where refluxing of hot electrons plays an important role. It is shown that the angular distribution of the emitted photons exhibits a four-directional structure with the angle of emission decreasing with the increase of the width of the target. Additionally, a collimated forward flash consisting of high energy photons has been identified in thin targets. The conversion efficiency of the energy of the laser pulse to the energy of the gamma rays rises with both the driving pulse intensity, and the thickness of the target. The amount of gamma rays also increases with the atomic number of the target material, despite a lower absorption of the driving laser pulse. The angular spectrum of the emitted gamma rays is directly related to the increase of hot electron divergence during their refluxing and its measurement can be used in experiments to study this process.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

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

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Volume of the periodical

60

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

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UT code for WoS article

000428552400001

EID of the result in the Scopus database

2-s2.0-85045625324