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キーワード:
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要旨:
In this work, the photoionization dynamics of atomic krypton, argon dimers and
molecular nitrogen are investigated through a series of experiments with attosecond
time resolution. The attosecond time resolution is provided by a measurement
technique that uses a train of extreme-ultraviolet pulses. These experiments
were performed with a high-repetition rate (50 KHz, 75KHz, 150 KHz)
attosecond beamline and a 3-Dimensional Ion/electron momentum imaging device
known as a Reaction Microscope (REMI). Using the high-repetition rate laser
along with the coincidence detection capabilities of the REMI, several intriguing
phenomena associated with atomic and molecular photoionization have been
studied. These include the role of spin-orbit interactions in atomic photoionization,
the influence of Van derWaals forces on the photoionization of argon dimers
and finally various dissociation processes in molecular nitrogen.
