Laser Plasmas and Spectroscopy

Our research is focused on the interaction of intense lasers with matter, in all of its forms. Current applications include finding novel materials for next generation semiconductor manufacturing and laser based methods for contaminant analysis and removal from wind turbine blades.

About the Research Area

When an intense laser interacts with matter (in all of its forms), a set of complex optical and plasma processes are set in motion. By spectroscopically analysing the light emitted (or absorbed) during the interaction these processes can be understood, and even manipulated. A host of applications are enabled in areas as diverse as energy generation, manufacturing, novel materials and environmental monitoring. We collaborate widely with international laboratories and industrial partners on all aspects of the work from theory to experiment to translation.

Research Projects

Laser Clean Project – https://laserclean.ie/

Laser Plasmas and Spectroscopy Publications

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Multiphoton excitation of surface plasmonpolaritons and scaling of nanoripple formation in large bandgap materials. Das, S.K; Messaoudi, H; Debroy, A; McGlynn, E; Grunwald, R. Optical Materials Express 2013

Inter-pulse delay optimization in dual-pulse laser induced breakdown vacuum ultraviolet spectroscopy of a steel sample in ambient gases at low pressure. Jiang, X; Hayden, P; Laasch, R; Costello, J.T; Kennedy, E.T. Spectrochimica Acta – Part B Atomic Spectroscopy 2013

Nonlinear optical mechanism of forming periodical nanostructures in large bandgap dielectrics. Grunwald, R; Das, S.K; Debroy, A; McGlynn, E; Messaoudi, H. MATEC Web of Conferences 2013

Measurements of extreme UV yields from Nd-YAG plasmas using a multilayer monochromator. Mosnier, J.P; Bac, S; Barchewitz, R; Kennedy, E.T; Collins, M; Costelloa, J.T. Journal of Electron Spectroscopy and Related Phenomena 1996

First photoexcitation measurements and r-matrix calculations of even-parity hollow states in laser-excited lithium atoms. Cubaynes, D; Diehl, S; Journel, L; Rouvellou, B; Bizau, J.-M; Wuilleumier, F.J; Berrah, N; Voky, L; Faucher, P; Hibbert, A; Blancard, C; Kennedy, E; Morgan, T.J; Bozek, J; Schlachter, A.S. Physical Review Letters 1996

Trends in 4d-subshell photoabsorption along the iodine isonuclear sequence: I, [Formula Presented], and [Formula Presented]. O’Sullivan, G; McGuinness, C; Costello, J.T; Kennedy, E.T; Weinmann, B. Physical Review A – Atomic, Molecular, and Optical Physics 1996

Resonant photoionization of atomic lithium in the region of the first and second inner-shell thresholds. Kiernan, L.M; Lee, M.-K; Sonntag, B.F; Zimmermann, P; Costello, J.T; Kennedy, E.T; Gray, A; Vo Ky, L. Journal of Physics B: Atomic, Molecular and Optical Physics 1996

New experiments in photoabsorption studies of singly and multiply charged ions. Kennedy, E.T; Costello, J.T; Mosnier, J.P. Journal of Electron Spectroscopy and Related Phenomena 1996

3s23p34S → 3s3p3(5S)np 4P transitions in atomic phosphorus. Mitchell, P.I; Carroll, P.K; van Kampen, P. Journal of Physics B: Atomic, Molecular and Optical Physics 1996

Magnetron sputtering of TiN protective coatings for medical applications. Kola, P.V; Daniels, S; Cameron, D.C; Hashmi, M.S.J. Journal of Materials Processing Technology 1996

Hollow-atom-hollow-ion decay routes of triply excited lithium: First Auger results and a comparison with R-matrix calculations. Diehl, S; Cubaynes, D; Kennedy, E.T; Wuilleumier, F.J; Bizau, J.-M; Journel, L; VoKy, L; Faucher, P; Hibbert, A; Blancard, C; Berrah, N; Morgan, T.J; Bozek, J; Schlachter, A.S. Journal of Physics B: Atomic, Molecular and Optical Physics 1997

Dramatic Changes in the 3s Autoionization Process at the Beginning of the Ar I Sequence. van Kampen, P; O’Sullivan, G; Ivanov, V.K; Ipatov, A.N; Costello, J.T; Kennedy, E.T. Physical Review Letters 1997

Photoelectron spectroscopy measurements and theoretical calculations of the lowest doubly hollow lithium state. Diehl, S; Cubaynes, D; Chung, K.T; Wuilleumier, F.J; Kennedy, E.T; Bizau, J.-M; Journel, L; Blancard, C; VoKy, L; Faucher, P; Hibbert, A; Berrah, N; Morgan, T.J; Bozek, J; Schlachter, A.S. Physical Review A – Atomic, Molecular, and Optical Physics 1997

Matrix elements for 4d5/2 photoionization in xenon derived from coincidence electron spectrometry. Schaphorst, S.J; Qian, Q; Krässig, B; Van Kampen, P; Scherer, N; Schmidt, V. Journal of Physics B: Atomic, Molecular and Optical Physics 1997

Measurement of the XUV photoabsorption spectra of atomic zinc and its ions Znn+: N = 1, 2, and 3 in the region of 3p-subshell excitation. Kiernan, L.M; Costello, J.T; Kennedy, E.T; Mosnier, J.-P; Sonntag, B.F. Journal of Physics B: Atomic, Molecular and Optical Physics 1997

Short-pulse, extreme-ultraviolet continuum emission from a table-too laser plasma light source. Meighan, O; Gray, A; Mosnier, J.-P; Whitty, W; Costello, J.T; Lewis, C.L.S; MacPhee, A; Allott, R; Turcu, I.C.E; Lamb, A. Applied Physics Letters 1997

Experimental observation and theoretical calculations of rydberg series in hollow lithium atomic states. Dieh, S; Cubaynes, D; Wuilleumier, F.J; Bizau, J.-M; Journel, L; Kennedy, E.T; Blancard, C; Voky, L; Faucher, P; Hibbert, A; Berrah, N; Morgan, T.J; Bozek, J; Schlachter, A.S. Physical Review Letters 1997

Trends in 3p photoabsorption in the Ar I isoelectronic sequence: Spectra of Sc IV and Ti V. Van Kampen, P; O’Sullivan, G. Journal of Physics B: Atomic, Molecular and Optical Physics 1998

Determination of Ca 2p ionization thresholds by high-resolution photoelectron spectroscopy. Wernet, Ph; Glatzel, P; Verweyen, A; Sonntag, B; Obst, B; Benten, W; Gerth, Ch; Zimmerman, P; Gray, A; Costello, J. Journal of Physics B: Atomic, Molecular and Optical Physics 1998

Extreme-UV photoabsorption spectrum of a laser-produced silicon plasma: Evidence for metastable Si+ ions. Costello, J.T; Kennedy, E.T; Mosnier, J.-P; Sayyad, M.H; McGuinness, C. Journal of Physics B: Atomic, Molecular and Optical Physics 1998

Photoelectron spectroscopy studies of hollow lithium states. Wuilleumier, F.J; Diehl, S; Cubaynes, D; Bizau, J.-M; Kennedy, E.T. Journal of Electron Spectroscopy and Related Phenomena 1998

Measurement and analysis of the photoabsorption spectra of laser-produced Al and Si+ in the region of 2p-subshell excitation. Costello, J.T; Kennedy, E.T; Mosnier, J.-P; Sayyad, M.H. Journal of Physics B: Atomic, Molecular and Optical Physics 1998

Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma. McGuinness, C; Martins, M; Wernet, Ph; Sonntag, B.F; Van Kampen, P; Mosnier, J.-P; Kennedy, E.T; Costello, J.T. Journal of Physics B: Atomic, Molecular and Optical Physics 1999

Discrete structure in the 4d photoabsorption spectrum of antimony and its ions. D’Arcy, R; Costello, J.T; McGuinness, C; O’Sullivan, G. Journal of Physics B: Atomic, Molecular and Optical Physics 1999

New high-resolution measurements of doubly excited states of Li+. Diehl, S; Cubaynes, D; Bizau, J.-M; Wuilleumier, F.J; Kennedy, E.T; Mosnierj, J.-P; Morgan, T.J. Journal of Physics B: Atomic, Molecular and Optical Physics 1999

Anomalous behavior of the near-threshold photoionization cross section of the neon isoelectronic sequence: A combined experimental and theoretical study. Chakraborty, H.S; Gray, A; Costello, J.T; Deshmukh, P.C; Kennedy, E.T; Manson, S.T. Physical Review Letters 1999

Discrete structure in the 4d photoabsorption spectrum of tellurium and its ions. Murphy, N; Costello, J.T; Kennedy, E.T; McGuinness, C; Mosnier, J.P; Weinmann, B; O’Sullivan, G. Journal of Physics B: Atomic, Molecular and Optical Physics 1999

High resolution spectroscopy of 2p6 → 2p53d resonantly excited atomic Ca. Obst, B; Benten, W; Von Dem Borne, A; Costello, J; Dardis, L; Gerth, Ch; Glatzel, P; Gray, A; Hansen, J.E; Meighan, O; Kennedy, E; McGuinness, C; Sonntag, B; Verweyen, A; Wernet, Ph; Zimmermann, P. Journal of Electron Spectroscopy and Related Phenomena 1999

Observation of a 6p-6d giant dipole resonance in the VUV photoabsorption spectrum of a laser-produced thorium plasma. Meighan, O; Dardis, L; Kennedy, E.T; Morgan, T.J; Mosnier, J.-P; Van Kampen, P; Costello, J.T. Journal of Physics B: Atomic, Molecular and Optical Physics 1999

New Dual Laser Plasma investigations of inner-shell excitations. Kennedy, E.T; Costello, J.T; Gray, A; McGuinness, C; Mosnier, J.-P; Van Kampen, P. Journal of Electron Spectroscopy and Related Phenomena 1999