دورية أكاديمية
Laser-induced electron diffraction of the ultrafast umbrella motion in ammonia
| العنوان: | Laser-induced electron diffraction of the ultrafast umbrella motion in ammonia |
|---|---|
| المؤلفون: | Belsa Carné, Blanca Maria, Amini, Kasra, Liu, Xinyao, Sánchez, Aurelien, Steinle, Tobias, Steinmetzer, Johannes, Biegert, Jens |
| المساهمون: | Universitat Politècnica de Catalunya. Doctorat en Fotònica |
| بيانات النشر: | AMER INST PHYSICS |
| سنة النشر: | 2021 |
| المجموعة: | Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
| مصطلحات موضوعية: | Àrees temàtiques de la UPC::Física, Chemical physics, Molecular physics, Molècules |
| الوصف: | Visualizing molecular transformations in real-time requires a structural retrieval method with Ångström spatial and femtosecond temporal atomic resolution. Imaging of hydrogen-containing molecules additionally requires an imaging method that is sensitive to the atomic positions of hydrogen nuclei, with most methods possessing relatively low sensitivity to hydrogen scattering. Laser-induced electron diffraction (LIED) is a table top technique that can image ultrafast structural changes of gas-phase polyatomic molecules with sub-Ångström and femtosecond spatiotemporal resolution together with relatively high sensitivity to hydrogen scattering. Here, we image the umbrella motion of an isolated ammonia molecule (NH3) following its strong field ionization. Upon ionization of a neutral ammonia molecule, the ammonia cation (NH+3) undergoes an ultrafast geometrical transformation from a pyramidal (FHNH=107°) to planar (FHNH=120°) structure in approximately 8 femtoseconds. Using LIED, we retrieve a near-planar (FHNH=117±5°) field-dressed NH+3 molecular structure 7.8-9.8 femtoseconds after ionization. Our measured field-dressed NH+3 structure is in excellent agreement with our calculated equilibrium field dressed structure using quantum chemical ab initio calculations. ; J.B. and group acknowledge financial support from the European Research Council for ERC Advanced Grant “TRANSFORMER” (788218), ERC Proof of Concept Grant “miniX” (840010), FET-OPEN “PETACom” (829153), FET-OPEN “OPTOlogic” (899794), Laserlab- Europe (EU-H2020 654148), MINECO for Plan Nacional FIS2017-89536-P; AGAUR for 2017 SGR 1639, MINECO for “Severo Ochoa” (SEV- 2015-0522), Fundació Cellex Barcelona, CERCA Programme / Generalitat de Catalunya, and the Alexander von Humboldt Foundation for the Friedrich Wilhelm Bessel Prize. J.B., K.A. and R.Moszynski. acknowledge the Polish National Science Center within the project Symfonia, 2016/20/W/ST4/00314. J.B and B.B. acknowledge Severo Ochoa” (SEV- 2015-0522). J.B. and A.S. acknowledge funding from the Marie ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2329-7778 |
| العلاقة: | info:eu-repo/grantAgreement/EC/H2020/788218/EU/Structural transformations and phase transitions in real-time/TRANSFORMER; info:eu-repo/grantAgreement/EC/H2020/829153/EU/Petahertz Quantum Optoelectronic Communication/PETACom; info:eu-repo/grantAgreement/EC/H2020/899794/EU/Optical Topologic Logic/OPTOlogic; info:eu-repo/grantAgreement/EC/H2020/654148/EU/The Integrated Initiative of European Laser Research Infrastructures/LASERLAB-EUROPE; info:eu-repo/grantAgreement/EC/H2020/641272/EU/High-Intensity Coherent Nonlinear Optics/HICONO; info:eu-repo/grantAgreement/EC/H2020/772676/EU/Time- and space- resolved ultrafast dynamics in molecular-plasmonic hybrid systems/QUEM-CHEM; Belsa, B. [et al.]. Laser-induced electron diffraction of the ultrafast umbrella motion in ammonia. "Structural Dynamics-US", 13 Gener 2021, vol. 8, núm. 1.; https://arxiv.org/abs/2012.15374Test; http://hdl.handle.net/2117/365713Test |
| DOI: | 10.1063/4.0000046 |
| الإتاحة: | https://doi.org/10.1063/4.0000046Test http://hdl.handle.net/2117/365713Test https://arxiv.org/abs/2012.15374Test |
| حقوق: | Attribution-NonCommercial-NoDerivs 3.0 Spain ; http://creativecommons.org/licenses/by-nc-nd/3.0/esTest/ ; Open Access |
| رقم الانضمام: | edsbas.E91582A2 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 23297778 |
|---|---|
| DOI: | 10.1063/4.0000046 |