Skip to main content
    • Aa
    • Aa

Tracking ground state Ba+ ions in an expanding laser–plasma plume using time-resolved vacuum ultraviolet photoionization imaging

  • J.S. HIRSCH (a1), K.D. KAVANAGH (a1), E.T. KENNEDY (a1), J.T. COSTELLO (a1), P. NICOLOSI (a2) and L. POLETTO (a2)...

We report results from a study of the integrated column density and expansion dynamics of ground-state-selected Ba+ ions in a laser–plasma plume using a new experimental system—VPIF (vacuum-ultraviolet photoabsorption imaging facility). The ions are tracked by recording the attenuation of a pulsed and collimated vacuum ultraviolet beam, tuned to the 5p–6d inner-shell resonance of singly ionized barium, as the expanding plasma plume moves across it. The attenuated beam is allowed to fall on a CCD array where the spatial distribution of the absorption is recorded. Time-resolved ion velocity and integrated column density maps are readily extracted from the photoionization images.

Corresponding author
Address correspondence and reprint requests to: John T. Costello, National Centre for Plasma Science and Technology (NCPST) and School of Physical Sciences, Dublin City University, Dublin 9, Ireland. E-mail:
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

Attwood, D.T., Coleman L.W., &Sweeney, D.W. (1975). Holographic microinterferometry of laser-produced plasmas with frequency-tripled probe pulses. Appl. Phys. Lett.26, 616618.

Colombant, D. & Tonon, G.F. (1973). X-ray emission in laser-produced plasmas. J. Appl. Phys.44, 35243537.

Geohegan, D.B. (1993). Imaging and blackbody emission spectra of particulates generated in the krf-laser ablation of bn and YBa2Cu3O7-x. Appl. Phys. Lett.62, 14631465.

Hecker-Denschlag, J., Simsarian, J.E., Ha ner, H., McKenzie, C., Browaeys, A., Cho, D., Helmerson, K., Rolston, S.L. & Phillips, W.D. (2002). A Bose-Einstein condensate in an optical lattice. J. Phys. B: At. Mol. Opt. Phys.35, 30953110.

Hill, W.T., Cheng, K.T., Johnson, W.R., Lucatorto, T.B., McIlrath T.J., &Sugar, J. (1982). Influence of increasing nuclear-charge on the Rydberg spectra of Xe, Cs+, and Ba++- correlation, term dependence and autoionization. Phys. Rev. Lett.49, 16311635.

Hirsch, J.S., Kennedy, E.T., Neogi, A., Costello, J.T., Nicolosi P., &Poletto, L. (2003). Vacuum-ultraviolet photoabsorption imaging system for laser plasma plume diagnostics. Rev. Sci. Instrum.74, 29922998.

Hirsch, J.S., van Kampen, P., Meighan, O., Mosnier, J.-P., Costello, J.T., Lewis, C.L.S., MacPhee, A., Hirst, G., Westhall, J. & Shaikh, W. (2000). Vacuum-ultraviolet resonant photoabsorption imaging of laser produced plasmas. J. Appl. Phys.88, 49534960.

Horwitz, J.L., & Moore, T.E. (2000). Core plasmas in space weather regions. IEEE Trans. Plasma Sci.28, 18401853.

Köble, U., Kiernan, L., Costello, J.T., Mosnier, J.-P., Kennedy, E.T., Ivanov, V.K., Kupchenko V.A., &Shendrik, M.S. (1995). 4f(1P) giant-dipole resonance in La3+. Phys. Rev. Lett.74, 21882191.

Lyon, I.C., Peart, B., West, J.B. & Dolder, K. (1987). Measurements of absolute cross sections for the photoionisation of Ba+ ions. Journal of Physics B: Atomic and Molecular Physics19, 41374147.

Murphy, A., Hirsch, J.S., Kilbane, D., Kennedy, E.T., Khater, M.A., Mosnier, J.-P., Neogi, A., O Sullivan, G., Lewis, C.L.S., Topping, S., Clarke, R., Divall, E., Foster, P., Hooker, C., Langley, A., Neely, D., Dunne, P. & Costello, J.T. (2003). VUV and soft x-ray emission from preplasmas irradiated with picosecond and femtosecond pulses. Proc SPIE4876, 11961202.

Neogi, A., & Thareja, R.K. (1999). Laser-produced carbon plasma expanding in vacuum, low pressure ambient gas and nonuniform magnetic field. Phys. Plasmas6, 365371.

Reade, R.P., Berdahl, P., Russo R.E., &Garrison, S.M. (1992). Laser deposition of biaxially textured yttria-stabilized zirconia buffer layers on polycrystalline metallic alloys for high critical current Y-Ba-Cu-O thin films. Appl. Phys Lett.61, 22312233.

Rose, S.J., Grant, I.P. & Connerade, J.P. (1980). A study of 5p excitation in atomic barium. Phil. Trans. Roy. Soc. Lond.296, 527.

Schulz, M., Moshammer, R., Fischer, D., Kollmus, H., Madison, D.H., Jones, S. & Ullrich, J. (2003). Three-dimensional imaging of atomic four-body processes. Nature422, 4850.

Singh, R.K. & Narayan, J. (1990). Pulsed-laser evaporation technique for deposition of thin films: Physics and theoretical model. Phys. Rev. B41, 88438859.

Turcu, I.C.E., Ross, I.N., Schulz, M.S., Daido, H., Tallents, G.J., Krishnan, J., Dwivedi, L. & Hening, A. (1993). Spatial coherence measurements and x-ray holographic imaging using a laser-generated plasma x-ray source in the water window spectral region. J. Appl. Phys.73, 80818087.

Wescott, E.M., Hallinan, T.J., Steinbaeknielsen, H.C., Swift, D.W. & Wallis, D.D. (1993). Rapid ray motions in barium plasma clouds and auroras. J. Geophys. Res.98, 37113724.

West, J.B. (2002). Photoionization cross sections of atomic ions. J. Elec. Spec. Radiat. Transfer123, 247256.

Williamson, T.P., Martin, G.W., El-Astal, A.H., Al-Khateeb, A., Weaver, I., Riley, D., Lamb, M.J., Morrow, T. & Lewis, C.L.S. (1999). An investigation of neutral and ion number densities within laser-produced titanium plasmas in vacuum and ambient environments. Appl. Phys. A: Mater. Sci. Process.69, S859S863.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Laser and Particle Beams
  • ISSN: 0263-0346
  • EISSN: 1469-803X
  • URL: /core/journals/laser-and-particle-beams
Please enter your name
Please enter a valid email address
Who would you like to send this to? *