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

Published online by Cambridge University Press:  01 July 2004

J.S. HIRSCH
Affiliation:
National Centre for Plasma Science and Technology (NCPST) and School of Physical Sciences, Dublin City University, Dublin 9, Ireland
K.D. KAVANAGH
Affiliation:
National Centre for Plasma Science and Technology (NCPST) and School of Physical Sciences, Dublin City University, Dublin 9, Ireland
E.T. KENNEDY
Affiliation:
National Centre for Plasma Science and Technology (NCPST) and School of Physical Sciences, Dublin City University, Dublin 9, Ireland
J.T. COSTELLO
Affiliation:
National Centre for Plasma Science and Technology (NCPST) and School of Physical Sciences, Dublin City University, Dublin 9, Ireland
P. NICOLOSI
Affiliation:
Istituto Nazionale per la Fisica della Materia, Universita di Padova, Via Granenigo, Padova, Italia
L. POLETTO
Affiliation:
Istituto Nazionale per la Fisica della Materia, Universita di Padova, Via Granenigo, Padova, Italia

Abstract

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.

Type
Research Article
Copyright
© 2004 Cambridge University Press

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References

REFERENCES

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.Google Scholar
Colombant, D. & Tonon, G.F. (1973). X-ray emission in laser-produced plasmas. J. Appl. Phys. 44, 35243537.Google Scholar
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.Google Scholar
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.Google Scholar
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.Google Scholar
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.Google Scholar
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.Google Scholar
Horwitz, J.L., & Moore, T.E. (2000). Core plasmas in space weather regions. IEEE Trans. Plasma Sci. 28, 18401853.Google Scholar
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.Google Scholar
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 Physics 19, 41374147.Google Scholar
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 SPIE 4876, 11961202.Google Scholar
Neogi, A., & Thareja, R.K. (1999). Laser-produced carbon plasma expanding in vacuum, low pressure ambient gas and nonuniform magnetic field. Phys. Plasmas 6, 365371.Google Scholar
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.Google Scholar
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.Google Scholar
Schulz, M., Moshammer, R., Fischer, D., Kollmus, H., Madison, D.H., Jones, S. & Ullrich, J. (2003). Three-dimensional imaging of atomic four-body processes. Nature 422, 4850.Google Scholar
Singh, R.K. & Narayan, J. (1990). Pulsed-laser evaporation technique for deposition of thin films: Physics and theoretical model. Phys. Rev. B 41, 88438859.Google Scholar
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.Google Scholar
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.Google Scholar
West, J.B. (2002). Photoionization cross sections of atomic ions. J. Elec. Spec. Radiat. Transfer 123, 247256.Google Scholar
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.Google Scholar

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