X-Ray Spectrum Emitted by Laser-Produced Barium Plasma in the 8 to 13.5 Å Wavelength Range

A detailed analysis of the x-ray spectrum emitted by a laser-produced plasma of barium in the 8–13.5A wavelength range is given. The plasma is produced by the irradiation of an ultra-short pulse laser on a BaF2 target. Ab-initio calculations using the RELAC relativistic computer code are performed to identify 3d–nf (n = 4 to 8), 3p–4s, and 3p–4d transitions of Ni-like Ba XXIX, and corresponding satellite transitions in neighbouring ionization states: Fe-, Co-, Cu-. Zn-, Ga- and Ge-like ions. By changing the focusing conditions of the laser pulse on the solid target, one can get different ionization charge distributions and resolve some ambiguous identifications.

[1]  A. Zigler,et al.  Analysis of the x-ray spectra emitted by laser-produced plasma of highly ionized lanthanum and praseodymium in the 8.4 to 12.0 Å wavelength range , 1994 .

[2]  T. Luk,et al.  Multiphoton-induced x-ray emission and amplification from clusters , 1993 .

[3]  Luk,et al.  X-ray emission from a 650-fs laser-produced barium plasma. , 1993, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[4]  Gerard Mourou,et al.  Development and applications of compact high‐intensity lasers , 1992 .

[5]  J. Solem,et al.  High intensity generation of 9–13 Å x‐rays from BaF2 targets , 1991 .

[6]  É. Biémont,et al.  Transition rates and wavelengths in the X-ray spectra of nickel-like ions (Ag XX-Pb LV) , 1991 .

[7]  More,et al.  Dielectronic recombination process in laser-produced tantalum plasmas. , 1989, Physical review. A, General physics.

[8]  C. Chenais-popovics,et al.  Extended analysis of the X-ray spectra of laser-irradiated elements in the sequence from tantalum to lead , 1988 .

[9]  A. Zigler,et al.  The unresolved 3d-4f transitions in the X-ray spectra of highly ionized Tm to Re from laser produced plasma , 1986 .

[10]  D. Brown,et al.  X-ray calibration of Kodak Direct Exposure film. , 1985, Applied optics.

[11]  P. A. Jaanimagi,et al.  Two‐channel, elliptical analyzer spectrograph for absolute, time‐resolving time‐integrating spectrometry of pulsed x‐ray sources in the 100–10 000‐eV region , 1985 .

[12]  M. Klapisch,et al.  Variance of the distributions of energy levels and of the transition arrays in atomic spectra. III. Case of spin-orbit-split arrays. , 1979, Physical review. A, General physics.

[13]  M. Klapisch,et al.  The 1s-3p Kβ-like x-ray spectrum of highly ionized iron , 1977 .