Plasma heating near a metal target by nanosecond pulses of the first, second, and fourth Nd-laser harmonics

Bufetov, I. A.; Bufetova, G. A.; Kravtsov, S. B.; Fyodorov, Vyatcheslav B.; Fomin, V. K.

doi:10.1070/qe1995v025n08abeh000470

Cited by 4 publications

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“…According to [13], we can estimate the temperature of plasma in the initial hot stage. Namely, the presence in the plasma of ions with the charge number Z with the ionization potential  allows us to speak about the value of the temperature in the generation of these ions T e ~  × 0.…”

Section: Experimental Set-up and Resultsmentioning

confidence: 99%

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

et al. 2015

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Abstract. The source of X-ray radiation with the energy of quanta that may vary in the range h = 1÷12 keV was developed for studies in X-ray interaction with matter and modifi cation of solid surfaces. It was based on a vacuum spark discharge with the laser triggering. It was shown in our experiments that there is a possibility to adjust X-ray radiation spectrum by changing the confi guration of the electrode system when the energy stored in the capacitor is varied within the range of 1÷17 J. A comprehensive study of X-ray imaging and quanta energy was carried out. These experiments were carried out for the case of both direct and reverse polarity of the voltage on the electrodes. Additionally, ion composition of plasma created in a laser-triggered vacuum discharge was analyzed. Highly charged ions Zn (+21) , Cu (+20) and Fe (+18) were observed.

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Section: Experimental Set-up and Resultsmentioning

confidence: 99%

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

et al. 2015

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The Influence of Laser Plasma on Spatial-time Distribution of High-power Laser Radiation Intensity

et al. 2015

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Thermodynamic parameters of a nanosecond plasma formed on a solid target in the radiation field of harmonics of a high-power neodymium laser emitting pulses with a steep leading edge

1996

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We extend the previously obtained results for the thermodynamic potential of hot QCD in the limit of large number of fermions to non-vanishing chemical potential. We give exact results for the thermal pressure in the entire range of temperature and chemical potential for which the presence of a Landau pole is negligible numerically. In addition we compute linear and non-linear quark susceptibilities at zero chemical potential, and the entropy at small temperatures. We compare with the available perturbative results and determine their range of applicability. Our numerical accuracy is sufficiently high to check and verify existing results, including the recent perturbative results by Vuorinen on quark number susceptibilities and the older results by Freedman and McLerran on the pressure at zero temperature and high chemical potential. We also obtain a number of perturbative coefficients at fourth and sixth order in the coupling that have not yet been calculated analytically. In the case of both non-zero temperature and non-zero chemical potential, we investigate the range of validity of a scaling behaviour noticed recently in lattice calculations by Fodor, Katz, and Szabo at moderately large chemical potential and find that it breaks down rather abruptly at µ q πT , which points to a presumably generic obstruction for extrapolating data from small to large chemical potential. At sufficiently small temperatures T µ q , we find dominating non-Fermi-liquid contributions to the interaction part of the entropy, which exhibits strong nonlinearity in the temperature and an excess over the free-theory value.

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Plasma heating near a metal target by nanosecond pulses of the first, second, and fourth Nd-laser harmonics

Cited by 4 publications

References 0 publications

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

The Influence of Laser Plasma on Spatial-time Distribution of High-power Laser Radiation Intensity

Thermodynamic parameters of a nanosecond plasma formed on a solid target in the radiation field of harmonics of a high-power neodymium laser emitting pulses with a steep leading edge

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