Search Results - "Johnsson, P"
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1
Electron localization following attosecond molecular photoionization
Published in Nature (London) (10-06-2010)“…For the past several decades, we have been able to directly probe the motion of atoms that is associated with chemical transformations and which occurs on the…”
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2
Probing single-photon ionization on the attosecond time scale
Published in Physical review letters (08-04-2011)“…We study photoionization of argon atoms excited by attosecond pulses using an interferometric measurement technique. We measure the difference in time delays…”
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3
Attosecond control in photoionization of hydrogen molecules
Published in Physical review letters (19-07-2011)“…We report experiments where hydrogen molecules were dissociatively ionized by an attosecond pulse train in the presence of a near-infrared field. Fragment ion…”
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4
Α 10-gigawatt attosecond source for non-linear XUV optics and XUV-pump-XUV-probe studies
Published in Scientific reports (28-02-2020)“…The quantum mechanical motion of electrons and nuclei in systems spatially confined to the molecular dimensions occurs on the sub-femtosecond to the…”
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5
Attosecond control of ionization by wave-packet interference
Published in Physical review letters (07-12-2007)“…A train of attosecond pulses, synchronized to an infrared (IR) laser field, is used to create a series of electron wave packets (EWPs) that are below the…”
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6
Attosecond pulse trains generated using two color laser fields
Published in Physical review letters (07-07-2006)“…We investigate the spectral and temporal structure of high harmonic emission from argon exposed to an infrared laser field and its second harmonic. For a wide…”
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7
Time-resolved relaxation and fragmentation of polycyclic aromatic hydrocarbons investigated in the ultrafast XUV-IR regime
Published in Nature communications (20-10-2021)“…Polycyclic aromatic hydrocarbons (PAHs) play an important role in interstellar chemistry and are subject to high energy photons that can induce excitation,…”
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8
Efficient high-order harmonic generation boosted by below-threshold harmonics
Published in Scientific reports (11-03-2013)“…High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at…”
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9
Chromatic aberrations correction of attosecond high-order harmonic beams by flat-top spatial shaping of the fundamental beam
Published in New journal of physics (01-02-2023)“…Abstract Attosecond pulses created by high-order harmonic generation in gases often exhibit strong chromatic aberrations, arising from the broad bandwidth and…”
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10
Two phase-matching regimes in high-order harmonic generation
Published in Optics express (25-09-2023)“…High-order harmonic generation (HHG) provides scalable sources of coherent extreme ultraviolet radiation with pulse duration down to the attosecond time scale…”
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11
Deep inner-shell multiphoton ionization by intense x-ray free-electron laser pulses
Published in Physical review letters (26-04-2013)“…We have investigated multiphoton multiple ionization dynamics of xenon atoms using a new x-ray free-electron laser facility, SPring-8 Angstrom Compact free…”
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12
Two-color XUV+NIR femtosecond photoionization of neon in the near-threshold region
Published in New journal of physics (28-06-2019)“…Results of angle-resolved electron spectroscopy of near-threshold photoionization of Ne atoms by combined femtosecond extreme ultraviolet and near infrared…”
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13
Coherent electron scattering captured by an attosecond quantum stroboscope
Published in Physical review letters (22-02-2008)“…We demonstrate a quantum stroboscope based on a sequence of identical attosecond pulses that are used to release electrons into a strong infrared (IR) laser…”
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14
Attosecond electron spectroscopy using a novel interferometric pump-probe technique
Published in Physical review letters (30-07-2010)“…We present an interferometric pump-probe technique for the characterization of attosecond electron wave packets (WPs) that uses a free WP as a reference to…”
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15
Probing time-dependent molecular dipoles on the attosecond time scale
Published in Physical review letters (19-07-2013)“…Photoinduced molecular processes start with the interaction of the instantaneous electric field of the incident light with the electronic degrees of freedom…”
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16
Molecular dissociative ionization and wave-packet dynamics studied using two-color XUV and IR pump-probe spectroscopy
Published in Physical review letters (18-09-2009)“…We present a combined theoretical and experimental study of ultrafast wave-packet dynamics in the dissociative ionization of H_{2} molecules as a result of…”
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17
Mapping Resonance Structures in Transient Core-Ionized Atoms
Published in Physical review. X (18-12-2020)“…The nature of transient electronic states created by photoabsorption critically determines the dynamics of the subsequently evolving system. Here, we…”
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18
Organization of 'nanocrystal molecules' using DNA
Published in Nature (London) (15-08-1996)“…Patterning matter on the nanometre scale is an important objective of current materials chemistry and physics. It is driven by both the need to further…”
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19
Hand function and performance of daily activities in systemic lupus erythematosus: a clinical study
Published in Lupus (01-07-2015)“…This clinical study was performed to investigate hand problems in individuals with systemic lupus erythematosus (SLE) in comparison with healthy controls, and…”
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20
Probing Single-Photon Ionization on the Attosecond Time Scale
Published in Physical review letters (05-04-2011)Get full text
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