Photoelectron Diffraction Mapping: Molecules Illuminated from Within

Landers, A. L.; Weber, Thorsten; Ali, I; Cassimi, A.; Hattass, M.; Jagutzki, O.; Nauert, A.; Osipov, T.; Staudte, A.; Prior, M. H.; Schmidt‐Böcking, H.; Cocke, C. L.; Dørner, R.

doi:10.1103/physrevlett.87.013002

Cited by 183 publications

(112 citation statements)

References 15 publications

(19 reference statements)

Supporting

Mentioning

110

Contrasting

Order By: Relevance

“…Instead, as we will discuss below, another interesting effect may be observed by choosing the appropriate observables: diffraction by the neighboring atomic centers. The latter effect has also been described in previous work 104,165 . 38 .…”

Section: Core Photoionization At High Photon Energiessupporting

confidence: 62%

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Plésiat

Decleva

Martín

2012

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Esta es la versión de autor del artículo publicado en: This is an author produced version of a paper published in: We present a detailed account of existing theoretical methods specially designed to provide vibrationally resolved photoionization cross sections of simple molecules within the Born-Oppenheimer approximation, with emphasis on newly developed methods based on density functional theory. The performance of these methods is shown for the case of N 2 and CO photoionization. Particular attention is paid to the region of high photon energies, where the electron wavelength is comparable to the bond length and, therefore, two-center interferences and diffraction are expected to occur. As shown in a recent work [Canton et al., Proc. Natl. Acad. Sci., 2011, 108, 73027306], the main experimental difficulty, which is to extract the relatively small diffraction features from the rapidly decreasing cross section, can be easily overcome by determining ratios of vibrationally resolved photoelectron spectra and existing theoretical calculations. From these ratios, one can thus get direct information about the molecular geometry. In this work, results obtained in a wide range of photon energies and for many different molecular orbitals of N 2 and CO are discussed and compared with the available experimental measurements. From this comparison, limitations and further possible improvements of the existing theoretical methods are discussed. The new results presented in the manuscript confirm that the conclusions reported in the above reference are of general validity.

show abstract

Section: Core Photoionization At High Photon Energiessupporting

confidence: 62%

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Plésiat

Decleva

Martín

2012

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…In addition, the electron wavelength can be scanned by scanning the photon energy. By this technique diffraction pattern of an electron wave launched from a well defined position inside a molecule can be measured, the molecule can be "illuminated from within" (Landers et al 2001). Once the multiple scattering problem is sufficiently understood theoretically one can use the sensitivity of the electron diffraction pattern on the molecular geometry and potential to test not the scattering calculation but the potential itself.…”

Section: Photoionisation Of Fixed-in-space Moleculesmentioning

confidence: 99%

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

et al. 2003

View full text Add to dashboard Cite

Recoil-ion and electron momentum spectroscopy is a rapidly developing technique that allows one to measure the vector momenta of several ions and electrons resulting from atomic or molecular fragmentation. In a unique combination, large solid angles close to π Microccopes -the "bubble chambers of atomic physics" -mark the decisive step forward to investigate many-particle quantum-dynamics occurring when atomic and molecular systems or even surfaces and solids are exposed to time-dependent external electromagnetic fields.The present review concentrates on just these latest technical developments and on at least four new classes of fragmentation experiments that have emerged within about the last five years. First, multi-dimensional images in momentum space brought unprecedented information on the dynamics of single-photon induced fragmentation of fixed-in-space molecules and on their structure. Second, a break-through in the investigation of highintensity short-pulse laser induced fragmentation of atoms and molecules has been achieved by using Reaction Microccopes. Third, for electron and ion-impact, the investigation of twoelectron reactions has matured to a state such that first fully differential cross sections (FDCS) are reported. Forth, comprehensive sets of FDCS for single ionisation of atoms by ion-impact, the most basic atomic fragmentation reaction, brought new insight, a couple of surprises and unexpected challenges to theory at keV to GeV collision energies. In addition, a brief summary on the kinematics is provided at the beginning. Finally, the rich future potential of the method is shortly envisaged.2

show abstract

“…As an alternative approach to X-ray diffraction, one can perform diffractive imaging of molecules through electron scattering, using either externally generated electron pulses [82,83] or using electrons ejected from within a molecule [84,85]. In the latter case, one exploits the fact that electrons leaving the molecule due to photo- In molecular imaging experiments of the type described above, it is a requirement that the measurements can be done in the molecular frame, i.e., in a coordinate system that is fixed with respect to the molecular axis.…”

Section: Ii24 Toward Imaging Time-resolved Molecular Rearrangement mentioning

confidence: 99%

Non-linear processes in the interaction of atoms and molecules with intense EUV and X-ray fields from SASE free electron lasers (FELs)

Berrah

Bozek

Costello

et al. 2010

Journal of Modern Optics

109

View full text Add to dashboard Cite

The advent of free electron laser (FEL) facilities capable of delivering high intensity pulses in the extreme-UV to X-ray spectral range has opened up a wide vista of opportunities to study and control light matter interactions in hitherto unexplored parameter regimes. In particular current short wavelength FELs can uniquely drive nonlinear processes mediated by inner shell electrons and in fields where the photon energy can be as high as 10 keV and so the corresponding optical period reaches below one attosecond. Combined with ultrafast optical lasers, or simply employing wavefront division, pump probe experiments can be performed with femtosecond time resolution. As single photon ionization of atoms and molecules is by now very well understood, they provide the ideal targets for early experiments by which not only can FELs be characterised and benchmarked but also the natural departure point in the hunt for nonlinear behaviour of atomistic systems bathed in laser fields of ultrahigh photon energy. In this topical review we illustrate with specific examples the gamut of apposite experiments in atomic, molecular physics currently underway at the SCSS test accelerator (Japan), FLASH (Hamburg) and LCLS (Stanford).

show abstract

Photoelectron Diffraction Mapping: Molecules Illuminated from Within

Cited by 183 publications

References 15 publications

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

Non-linear processes in the interaction of atoms and molecules with intense EUV and X-ray fields from SASE free electron lasers (FELs)

Contact Info

Product

Resources

About