Laser-Induced Electron Diffraction in Chiral Molecules

Rajak, Debobrata; Beauvarlet, Sandra; Kneller, Omer; Comby, Antoine; Cireasa, Raluca; Descamps, Dominique; Fabre, Baptiste; Gorfinkiel, Jimena D.; Higuet, Julien; Petit, Stéphane; Rozen, Shaked; Ruf, Hartmut; Thiré, Nicolas; Blanchet, Valérie; Dudovich, Nirit; Pons, Bernard; Mairesse, Yann

doi:10.1103/physrevx.14.011015

Cited by 5 publications

(2 citation statements)

References 137 publications

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“…The problem is that chirality remains a tricky property to probe Right-and left-handed versions of a chiral molecule preferentially diffract electrons in opposite directions, allowing researchers to determine the chirality of a molecule from an electron-diffraction signal. Credit: D. Rajak et al [1] experimentally. Now Debobrata Rajak and Yann Mairesse from the National Centre for Scientific Research (CNRS) in France, and their colleagues have developed a technique for determining the chirality of a molecule using the molecule's own electrons [1].…”

Section: Probing Chiral Molecules With Their Own Electronsmentioning

confidence: 99%

“…Credit: D. Rajak et al [1] experimentally. Now Debobrata Rajak and Yann Mairesse from the National Centre for Scientific Research (CNRS) in France, and their colleagues have developed a technique for determining the chirality of a molecule using the molecule's own electrons [1]. The technique could allow researchers to monitor the dynamics of chiral molecules on attosecond timescales, providing a new view of these twisty objects.…”

Section: Probing Chiral Molecules With Their Own Electronsmentioning

confidence: 99%

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Probing Chiral Molecules with Their Own Electrons

Wright

2024

Physics

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Section: Probing Chiral Molecules With Their Own Electronsmentioning

confidence: 99%

Section: Probing Chiral Molecules With Their Own Electronsmentioning

confidence: 99%

Probing Chiral Molecules with Their Own Electrons

Wright

2024

Physics

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Fourier–Hankel–Abel Nyquist-limited tomography: A spherical harmonic basis function approach to tomographic velocity-map image reconstruction

Sparling,

Rajak,

Blanchet

et al. 2024

Review of Scientific Instruments

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A new method for the fully generalized reconstruction of three-dimensional (3D) photoproduct distributions from velocity-map imaging (VMI) projection data is presented. This approach, dubbed Fourier–Hankel–Abel Nyquist-limited TOMography (FHANTOM), builds on recent previous work in tomographic image reconstruction [C. Sparling and D. Townsend, J. Chem. Phys. 157, 114201 (2022)] and takes advantage of the fact that the distributions produced in typical VMI experiments can be simply described as a sum over a small number of spherical harmonic functions. Knowing the solution is constrained in this way dramatically simplifies the reconstruction process and leads to a considerable reduction in the number of projections required for robust tomographic analysis. Our new method significantly extends basis set expansion approaches previously developed for the reconstruction of photoproduct distributions possessing an axis of cylindrical symmetry. FHANTOM, however, can be applied generally to any distribution—cylindrically symmetric or otherwise—that can be suitably described by an expansion in spherical harmonics. Using both simulated and real experimental data, this new approach is tested and benchmarked against other tomographic reconstruction strategies. In particular, the reconstruction of photoelectron angular distributions recorded in a strong-field ionization regime—marked by their extensive expansion in terms of spherical harmonics—serves as a key test of the FHANTOM methodology. With the increasing use of exotic optical polarization geometries in photoionization experiments, it is anticipated that FHANTOM and related reconstruction techniques will provide an easily accessible and relatively low-cost alternative to more advanced 3D-VMI spectrometers.

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Strong field-induced quantum dynamics in atoms and small molecules

Eckart

2024

J. Phys. B: At. Mol. Opt. Phys.

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High-intensity laser fields can ionize atoms and molecules and also initiate molecular dissociation. This review is on the recent progress made using experiments that harness the potential of cold-target recoil-ion momentum spectroscopy and femtosecond laser pulses with tailored intense fields. The possibility to image the molecular structure and the orientation of small molecules via the detection of the momenta of the ions is illustrated. The process of non-adiabatic tunnel ionization is analyzed in detail focusing on the properties of the electronic wave packet at the tunnel exit. It is reviewed how the electron gains angular momentum and energy during tunneling in circularly polarized light. The electron is a quantum object with an amplitude and a phase. Most experiments in strong field ionization focus on the absolute square of the electronic wave function. The technique of holographic angular streaking of electrons enables the retrieval of Wigner time delays in strong field ionization, which is a property of the electronic wave function’s phase in momentum space. The relationship between the phase in momentum space and the amplitudes in position space enables access to information about the electron’s position at the tunnel exit. Finally, recent experiments studying entanglement in strong field ionization are discussed.

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Laser-Induced Electron Diffraction in Chiral Molecules

Cited by 5 publications

References 137 publications

Probing Chiral Molecules with Their Own Electrons

Probing Chiral Molecules with Their Own Electrons

Fourier–Hankel–Abel Nyquist-limited tomography: A spherical harmonic basis function approach to tomographic velocity-map image reconstruction

Strong field-induced quantum dynamics in atoms and small molecules

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