The role of the prepulse in cluster heating by a high-power femtosecond laser pulse

Auguste, T.; D’Oliveira, P.; Hulin, S.; Monot, P.; Abdallah, J.; Faenov, A. Ya.; Skobelev, I. Yu.; Magunov, A. I.; Pikuz, T. A.

doi:10.1134/1.1312006

Cited by 28 publications

(11 citation statements)

References 16 publications

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“…In this case, even at moderate densities such as N e~1 0 21 -10 22 cm 23 , a quasi-continuum spectrum forms due to Stark broadening. A different situation has been observed earlier and discussed Sherrill et al, 2006;Junkel-Vives et al, 2001, 2002a, 2002bFukuda et al, 2003Fukuda et al, , 2004bAuguste et al, 2000Skobelev et al, 2002aSkobelev et al, , 2002b in the case of a plasma generated by laser-irradiation of Ar clusters. Second, the contribution to the observed spectrum, which is associated to the initial stage of cluster heating, is proportional to the ratio between the lifetime of the dense heated cluster and that of the plasma column.…”

Section: /3mentioning

confidence: 74%

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Non-adiabatic cluster expansion after ultrashort laser interaction

et al. 2008

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We used X-ray spectroscopy as a diagnostic tool for investigating the properties of laser-cluster interactions at the stage in which non-adiabatic cluster expansion takes place and a quasi-homogeneous plasma is produced. The experiment was carried out with a 10 TW, 65 fs Ti:Sa laser focused on CO(2) cluster jets. The effect of different laser-pulse contrast ratios and cluster concentrations was investigated. The X-ray emission associated to the Rydberg transitions allowed us to retrieve, through the density and temperature of the emitting plasma, the time after the beginning of the interaction at which the emission occurred. The comparison of this value with the estimated time for the "homogeneous" plasma formation shows that the degree of adiabaticity depends on both the cluster concentration and the pulse contrast. Interferometric measurements support the X-ray data concerning the plasma electron density

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Section: /3mentioning

confidence: 74%

“…Faenov et al 70 et al, 2004;Fukuda et al, 2003Fukuda et al, , 2004aFukuda et al, , 2004bJunkel-Vives et al, 2001, 2002a, 2002bAuguste et al, 2000Skobelev et al, 2002aSkobelev et al, , 2002bDorchies et al, 2005). YA.…”

Section: Introductionmentioning

confidence: 99%

Non-adiabatic cluster expansion after ultrashort laser interaction

et al. 2008

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“…The distance between the IPs and the nozzle was of 7 cm. As the prepulse can ionize clusters, which could shrink them in size or destroy completely before interacting with the main laser pulse [50], we used the laser with as high contrast as we could to avoid such damage. The Ar gas stagnation pressure and the position of the nozzle with respect to the laser focus were optimized in order to get an optimized electron beam signal.…”

Section: Generation Of a Soft X-ray Radiationmentioning

confidence: 99%

Generation of Quantum Beams in Large Clusters Irradiated by Super‐Intense, High – Contrast Femtosecond Laser Pulses

Faenov¹,

Pikuz²,

Fukuda³

et al. 2013

Contrib. Plasma Phys.

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A short review of our experimental studies on generation of photon and particle beams in submicron clusters irradiated by intense, high-contrast (∼ 10 8 -10 10 ) femtosecond laser pulses is presented. It is shown that highlyefficient laser-cluster interaction allows creating bright sources of X-ray, high-energy electron and ion beams. The examples of applications of femtosecond-laser-produced cluster plasmas (FLPCP) for X-ray and ion beams radiography are presented.

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“…The timescale for decay of a cluster, that is expansion and cooling, under the current conditions, has been estimated to be in the range of 1-10 ps 24 . This fact suggests the following scenario for understanding the observed spectra.…”

Section: Theoretical Analysis For X-ray Spectramentioning

confidence: 99%

X-ray radiation of clusters irradiated by ultrafast high-intensity laser pulses

Fukuda¹,

Akahane²,

Aoyama³

et al. 2004

SPIE Proceedings

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High resolution x-ray emission spectra of plasma created by laser irradiation of rare-gas (Ar, Kr, Xe) clusters have been measured at laser intensities over 10 19 W/cm 2 and 30-fs pulse duration. To make these measurements possible, in addition to the effort to decrease a prepulse intensity using Pockels cell switches, micron-size clusters were produced using a specially designed conical nozzle. The Boltzmann equation and a detailed collisional radiative model are solved simultaneously as a function of time to model the time integrated x-ray spectra of the transient plasma. The results are quantitatively in good agreement with the experimentally observed x-ray emission spectra of Ar clusters.

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The role of the prepulse in cluster heating by a high-power femtosecond laser pulse

Cited by 28 publications

References 16 publications

Non-adiabatic cluster expansion after ultrashort laser interaction

Non-adiabatic cluster expansion after ultrashort laser interaction

Generation of Quantum Beams in Large Clusters Irradiated by Super‐Intense, High – Contrast Femtosecond Laser Pulses

X-ray radiation of clusters irradiated by ultrafast high-intensity laser pulses

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