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Attosecond photoion...
Attosecond photoionization dynamics with stimulated core-valence transitions
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You, Jhih-An (författare)
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Rohringer, Nina (författare)
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- Dahlström, Jan Marcus (författare)
- Stockholms universitet,Fysikum,Center for Free-Electron Laser Science, Germany; Max Planck Institute for the Physics of Complex Systems, Germany
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(creator_code:org_t)
- 2016
- 2016
- Engelska.
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Ingår i: Physical Review A: covering atomic, molecular, and optical physics and quantum information. - 2469-9926 .- 2469-9934. ; 93:3
- Relaterad länk:
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https://arxiv.org/ab...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We investigate ionization of neon atoms by an isolated attosecond pump pulse in the presence of two coherent extreme ultraviolet or x-ray probe fields. The probe fields are tuned to a core-valence transition in the residual ion and induce spectral shearing of the photoelectron distributions. We show that the photoelectron-ion coincidence signal contains an interference pattern that depends on the temporal structure of the attosecond pump pulse and the stimulated core-valence transition. Many-body perturbation theory is used to compute atomic response times for the processes and we find strikingly different behavior for stimulation to the outer-core hole (2p <-> 2s) and stimulation to the inner-core hole (2p <-> 1s). The response time of the inner-core transition is found to be comparable to that of state-of-the-art laser-based characterization techniques for attosecond pulses.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- art (ämneskategori)
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