Ion yields of C<sup>+n</sup>(n<6) from methane, ethane, butane and octane are measured from 10<sup>13</sup>W/cm<sup>2</sup>to 10<sup>19</sup>W/cm<sup>2</sup>, with photoelectron spectra up to 0.5 MeV. As one reaches 10<sup>17</sup>W/cm<sup>2</sup>the molecular response becomes atomic-like.
© 2008 Optical Society of America
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(320.0320) Ultrafast optics : Ultrafast optics
(320.7120) Ultrafast optics : Ultrafast phenomena
(020.2649) Atomic and molecular physics : Strong field laser physics
S. Palaniyappan, R. Mitchell, R. Sauer, I. Ghebregziabher, S. White, A. DiChiara, M. DeCamp, and B. C. Walker, "Intense Field Ionization of Methane, Ethane, Butane and Octane: Transition from Molecular to Atomic Response," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2008), paper JWD4.
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