Attosecond photoionization dynamics with stimulated core-valence transitions
(2016) In Physical Review A (Atomic, Molecular and Optical Physics) 93(3).- Abstract
- 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).... (More) - 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/6bbb2991-cf56-4c10-bd58-b2fba7cecd78
- author
- Dahlström, Marcus LU ; You, Jhih-An and Rohringer, Nina
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A (Atomic, Molecular and Optical Physics)
- volume
- 93
- issue
- 3
- article number
- 033413
- publisher
- American Physical Society
- external identifiers
-
- scopus:84961689503
- ISSN
- 1050-2947
- language
- English
- LU publication?
- no
- id
- 6bbb2991-cf56-4c10-bd58-b2fba7cecd78
- date added to LUP
- 2017-06-15 12:54:18
- date last changed
- 2022-02-14 20:07:41
@article{6bbb2991-cf56-4c10-bd58-b2fba7cecd78,
abstract = {{We investigate ionization of neon atoms by an isolated attosecond pump pulse in the presence of two coherent<br/>extreme ultraviolet or x-ray probe fields. The probe fields are tuned to a core-valence transition in the residual ion<br/>and induce spectral shearing of the photoelectron distributions. We show that the photoelectron-ion coincidence<br/>signal contains an interference pattern that depends on the temporal structure of the attosecond pump pulse<br/>and the stimulated core-valence transition. Many-body perturbation theory is used to compute “atomic response<br/>times” for the processes and we find strikingly different behavior for stimulation to the outer-core hole (2p ↔ 2s)<br/>and stimulation to the inner-core hole (2p ↔ 1s). The response time of the inner-core transition is found to be<br/>comparable to that of state-of-the-art laser-based characterization techniques for attosecond pulses.}},
author = {{Dahlström, Marcus and You, Jhih-An and Rohringer, Nina}},
issn = {{1050-2947}},
language = {{eng}},
number = {{3}},
publisher = {{American Physical Society}},
series = {{Physical Review A (Atomic, Molecular and Optical Physics)}},
title = {{Attosecond photoionization dynamics with stimulated core-valence transitions}},
url = {{https://lup.lub.lu.se/search/files/26901419/Dahlstrom2016.pdf}},
volume = {{93}},
year = {{2016}},
}