Browsing by Author "LUNNEY, JAMES"
Now showing items 21-24 of 24
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Polarisation distribution for internal conical diffraction and the superposition of zero and first order bessel beams
LUNNEY, JAMES; DONEGAN, JOHN; RAKOVICH, YURY (2008)Internal conical refraction leads to the formation of zero (J0) and first order (J1) Bessel beams in superposition. The (J0) beam retains the input circular polarisation and the (J1) has opposite polarisation but with a ... -
Pulsed laser ablation of silver: ion dynamics in plasma plume
LUNNEY, JAMES; DONNELLY, TONY (2010)The ion dynamics of silver ablated using 355 and 193nm pulsed laser irradiation in vacuum has been investigated by using a Langmuir probe and quadrupole mass spectrometry. The kinetic energies of the ablated silver ions ... -
Soft x-ray spectroscopic investigation of ferromagnetic Co-doped ZnO
MCGUINNESS, CORMAC; LUNNEY, JAMES; PATTERSON, CHARLES; VENKATESAN, MUNUSWAMY; COEY, JOHN (2006)The electronic properties of cobalt-doped ZnO were investigated through site-selective and element-sensitive x-ray-absorption spectroscopy in the vicinity of the Co L2,3 edge, the oxygen K edge, and at the Zn L3 edge. ... -
Z-pinch Discharge in Laser Produced Plasma
LUNNEY, JAMES; STERLING, ENRIQUE (2010)Z-pinch effects in a laser produced aluminium plasma were investigated with a relatively low current fast coaxial electrical discharge. The ion flux in the laser produced plasma (LPP) was monitored with a Langmuir ion ...