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The photoionization of methyl iodide beam seeded in argon and helium is studied by time-of-flight mass spectrometry using a 25 ns, 532 nm Nd-YAG laser with intensities in the range of 2×10 10 –2×10 11 W/cm 2 . Multiply charged ions of I q+ (q=2–3) and C 2+ with tens of eV kinetic energies have been observed when laser interacts with the middle part of the pulsed...
The Coulomb explosion of ammonia clusters induced by nanosecond laser at 532 nm with an intensity of ∼1012 Wcm−2 has been studied by time of flight mass spectrometry. The dominant multiply charged ions are N3+ and N2+ with kinetic energies of 110 and 50 eV respectively. The electrons generated from the multiphoton ionization are heated through inverse bremsstrahlung by the laser field when colliding...
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