Generation of X rays and energetic ions from superintense laser irradiation of micron-sized Ar clusters
Yuji Fukuda,Yutaka Akahane,Makoto Aoyama,N. Inoue,H. Ueda,Yasuaki Kishimoto,Koichi Yamakawa,A. Ya. Faenov,A. I. Magunov,T. A. Pikuz,I. Yu. Skobelev,Joseph Abdallah,George Csanak,A. S. Boldarev,Vladimir A. Gasilov +14 more
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In this article, high-resolution K-shell spectra of a plasma created by superintense laser irradiation of micron-sized Ar clusters have been measured with an intensity above 1019 W/cm2 and a pulse duration of 30 fs.Abstract:
High-resolution K-shell spectra of a plasma created by superintense laser irradiation of micron-sized Ar clusters have been measured with an intensity above 1019 W/cm2 and a pulse duration of 30 fs. The total photon flux of 2 × 108 photons/pulse was achieved for Heα1 resonant line of Ar (λ = 3.9491 A, 3.14 keV). In parallel with X-ray measurements, energy distributions of emitted ions have been measured. The multiply charged ions with kinetic energies up to 800 keV were observed. It is found that hot electrons produced by high contrast laser pulses allow the isochoric heating of clusters and shift the ion balance toward the higher charge states, which enhances both the X-ray line yield of the He-like argon ion and the ion kinetic energy.read more
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High energy heavy ion jets emerging from laser plasma generated by long pulse laser beams from the NHELIX laser system at GSI
Gabriel Schaumann,Marius Schollmeier,G. Rodriguez-Prieto,A. Blazevic,Erik Brambrink,M. Geissel,S. Korostiy,P. Pirzadeh,Markus Roth,Frank B. Rosmej,A. Ya. Faenov,T. A. Pikuz,Konstantin Tsigutkin,Yitzhak Maron,N.A. Tahir,Dieter H. H. Hoffmann +15 more
TL;DR: In this paper, high energy heavy ions were generated in laser produced plasma at moderate laser energy, with a large focal spot size of 0.5 mm diameter, and the velocity distribution was measured via an observation of Doppler shifted characteristic transition lines.
Journal ArticleDOI
Cluster temperature. Methods for its measurement and stabilization
TL;DR: Cluster temperature is an important material parameter essential to many physical and chemical processes involving clusters and cluster beams as mentioned in this paper, which ranges from 10?3 to about 108 K. Because of the diverse methods by which clusters can be produced, excited, and stabilized, and also because of the widely ranging values of atomic and molecular binding energies, and numerous energy relaxation channels in clusters, cluster temperature (internal energy).
Journal ArticleDOI
Experience of micro-heterogeneous target fabrication to study energy transport in plasma near critical density
TL;DR: In this article, the authors presented the experience of target fabrication with low-density and cluster heterogeneity and achieved a density of 4.5 mg/cc cellulose triacetate in the form of regular three-dimensional polymer networks.
Journal ArticleDOI
Spectra of hollow ions in an ultradense laser plasma
TL;DR: In this article, the authors discuss the observation of the spectra of hollow ions in an ultradense laser plasma and consider the types of such ions and how they are excited.
Journal ArticleDOI
High Kα x-ray conversion efficiency from extended source gas jet targets irradiated by ultra short laser pulses
Nathan Kugland,Carmen Constantin,P. Neumayer,H.-K. Chung,Andrew Collette,E L Dewald,Dustin Froula,S. H. Glenzer,Andreas Kemp,A. L. Kritcher,J. S. Ross,Christoph Niemann +11 more
TL;DR: The absolute laser conversion efficiency to Kα-like inner shell x-rays (integrated from Kα to Kβ) is observed to be an order of magnitude higher in argon gas jets than in solid targets due to enhanced emission from higher ionization stages following ultrashort pulse laser irradiation.
References
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