Interferometric investigations of dynamics and parameters of plasma created by Ti:Sa femtosecond laser.

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Interferometric investigations of dynamics and parameters of plasma created by Ti:Sa femtosecond laser.

Popis výsledku v původním jazyce

This contribution presents the first interferometric measurements of laser–produced plasma generated by the Ti:Sa high power laser (10 TW) installed in IPPLM (Institute of Plasma Physics and Laser Microfusion). The aim of the study was to learn the character of the plasma expansion and ions emission for different irradiation conditions of thin-foil targets. Measurements were carried out for different levels of laser beam intensity in the range of 1016- 1019 W/cm2, which was achieved by varying a focal spot radius, by changing the focus position of the main lens in relation to the target surface. To illustrate the plasma expansion and to obtain information about the space-time changes in the electron density of the plasma stream, the 2-frame folding wave interferometer was used. This interferometer was irradiated by Ti:Sa laser pulse with wavelength of 812 nm and FWHMnof 40 fs, separated from the main laser beam (Fig.1). To obtain space and temporal separation of the diagnostic beams, the polarizing optical delay line was applied, which irradiated the interferometer by 2 laser beams, separated in time, with mutually orthogonal polarizations. Additionally, measurements of ions emission by means of the grid collectors for different focusnposition were carried out (Fig.4). The obtained information about the dynamics of the parameters of plasma generated in thenfemtosecond regime seems to be very useful in studies of of the proton streams by the TNSA (Target Normal Sheath Acceleration).n

Název v anglickém jazyce

Interferometric investigations of dynamics and parameters of plasma created by Ti:Sa femtosecond laser.

Popis výsledku anglicky

This contribution presents the first interferometric measurements of laser–produced plasma generated by the Ti:Sa high power laser (10 TW) installed in IPPLM (Institute of Plasma Physics and Laser Microfusion). The aim of the study was to learn the character of the plasma expansion and ions emission for different irradiation conditions of thin-foil targets. Measurements were carried out for different levels of laser beam intensity in the range of 1016- 1019 W/cm2, which was achieved by varying a focal spot radius, by changing the focus position of the main lens in relation to the target surface. To illustrate the plasma expansion and to obtain information about the space-time changes in the electron density of the plasma stream, the 2-frame folding wave interferometer was used. This interferometer was irradiated by Ti:Sa laser pulse with wavelength of 812 nm and FWHMnof 40 fs, separated from the main laser beam (Fig.1). To obtain space and temporal separation of the diagnostic beams, the polarizing optical delay line was applied, which irradiated the interferometer by 2 laser beams, separated in time, with mutually orthogonal polarizations. Additionally, measurements of ions emission by means of the grid collectors for different focusnposition were carried out (Fig.4). The obtained information about the dynamics of the parameters of plasma generated in thenfemtosecond regime seems to be very useful in studies of of the proton streams by the TNSA (Target Normal Sheath Acceleration).n

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

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Návaznosti

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 statě ve sborníku

EPS 2017: 44th European Physical Society Conference on Plasma Physics

ISBN

979-10-96389-07

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

European Physical Society

Místo vydání

Mulhouse

Místo konání akce

Belfast

Datum konání akce

26. 6. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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