| Autor: |
Di Fraia M; Elettra-Sincrotrone Trieste S.C.p.A., 34149, Basovizza, Trieste, Italy. michele.difraia@elettra.eu., Finetti P, Richter R, Prince KC, Wiese J, Devetta M, Negro M, Vozzi C, Ciriolo AG, Pusala A, Demidovich A, Danailov MB, Karamatskos ET, Trippel S, Küpper J, Callegari C |
| Jazyk: |
angličtina |
| Zdroj: |
Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2017 Aug 02; Vol. 19 (30), pp. 19733-19739. |
| DOI: |
10.1039/c7cp01812f |
| Abstrakt: |
We demonstrate the experimental realization of impulsive alignment of carbonyl sulfide (OCS) molecules at the Low Density Matter Beamline (LDM) at the free-electron laser FERMI. OCS molecules in a molecular beam were impulsively aligned using 200 fs pulses from a near-infrared laser. The alignment was probed through time-delayed ionization above the sulphur 2p edge, resulting in multiple ionization via Auger decay and subsequent Coulomb explosion of the molecules. The ionic fragments were collected using a time-of-flight mass spectrometer and the analysis of ion-ion covariance maps confirmed the correlation between fragments after Coulomb explosion. The analysis of the CO + and S + channels allowed us to extract the rotational dynamics, which is in agreement with our theoretical description as well as with previous experiments. This result opens the way for a new class of experiments at LDM within the field of coherent control of molecules with the possibilities that a precisely synchronized optical-pump XUV-probe laser setup like FERMI can offer. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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