Facilities
Large-scale facilities

Gas Phase

General informations

Location
Trieste, Elettra Synchrotron light source
Main techniques and methods
XPS, UPS, NEXAFS, Resonant Photoemission, ARPES, Time resolved X-Ray Spectroscopy, 3D Ion Imaging, Velocity Map Imaging, Threshold photoelectron spectroscopy, microwave plasma and flash pyrolysis free radical in situ generation, Total and dispersed fluorescence spectroscopy.
Key instumentation
Beamline (ID and Monochromator):13-900 eV; fs/ps optical laser 83 MHz, 700-1000 nm), Photoemission setup, X-ray absorption setup, Mass spectrometry setup, Dispersed fluorescence setup.

The Gas Phase is operated by a Research Team (Sincrotrone Trieste+CNR-IOM&ISM), and is the only beamline at Elettra specifically devoted to research on gaseous systems.

The Gas Phase Photoemission (GAPH) beamline was born as a joint venture between the Istituto Nazionale di Fisica della Materia (INFM), the Consiglio Nazionale delle Ricerche (CNR) and the Sincrotrone Trieste scpA (ST). Presently the research team partecipants are from CNR (IOM&ISM) and Sincrotrone Trieste.


The Gas Phase Photoemission beamline is specifically devoted to research on gaseous systems. It offers a multi-technique approach for investigation of low density matter in the photon energy range 13-900 eV from an high intensity tunable undulator and a high resolution monochromator (E/E between 10.000 and 60.000)

Technical description

The Gas Phase Photoemission beamline is specifically devoted to research on gaseous systems.

It offers a multi-technique approach for investigation of low-density matter in the photon energy range 13-900 eV from a high intensity tunable undulator and a high-resolution monochromator (E/DE between 10.000 and 60.000)
The beamline is presently equipped with more distinct interchangeable apparatuses, for:

  1. VG-220i set up for photoemission experiments on condensable vapors, also equipped for TOF mass spectrometry
  2. 2 end stations for photoemission experiments on highly reactive molecular species (radicals and short-lived species):
  3. 3D-Ion Imaging end-station, for PEPIPICO TOF mass spectroscopy of radicals, dications and short-lived species.
  4. ARPES-TPES end-station, for Angle Resolved Photoelectron and Threshold Photoelectron Spectroscopy of reactive species and radicals, and chiral molecules by Photoelectron Circular Dichroism (ongoing upgrade).
  5. Multi-coincidence experiments set up, for angle resolved and electron-electron coincidence experiments in a versatile multichannel configuration.
  6. Minuteman M305V set up, for UV-Vis dispersed fluorescence
  7. Velocity Map Imaging (VMI) detector also available for PEPICO and PEPIPICO configuration
  8. Two colors experiments SR + IR laser beam.
  9. SES200 setup for high resolution photoemission of molecular vapors [collaboration agreement with University of Uppsala, Sweden (prof. Carla Puglia)];
  10. XUV-PIK set-up, for dispersed emission experiments with a compact XUV spectrometer [collaboration agreement with IFN-CNR, Padua, Italy (dr. L. Poletto)];
  11. CESyRa set-up, for photoionization of clusters of refractory materials, via electron-ion multicoincidence detection [on going upgrade, collaboration agreement with CIMAINA, University of Milan, Italy (prof. Paolo Piseri)];
  12. molecular velocity selector setup for investigating rotational alignment effects in seeded molecular beams for possible future studies of gas-surface stereo dynamics [ongoing upgrade, collaboration agreement with University of Perugia, Italy (Prof. S. Falcinelli)]

Users can bring their own apparatus to perform experiments, provided that it is compatible with the beamline requirements.

Development of new methods, instrumentation, software

Instrumentation:Research Team (GdR) personnel collaborated in the developing of part of the experimental apparatus available for experiments, in particular all not dedicated to pure photoelectron spectroscopy have been developed in house or heavily modified to perform experiments designed for specific target.

Software: The acquisition programs of the beamline end stations has been developed in house.

 

 

Research Activity

The Gas Phase Photoemission (GasPhase) beamline was established at Elettra, as a joint venture between the Istituto Nazionale di Fisica della Materia (INFM), the Consiglio Nazionale delle Ricerche (CNR) and the Elettra - Sincrotrone Trieste scpA (ST). At present it is operated by a Research Team (ST+CNR ISM and CNR-IOM). It is the only beamline at Elettra specifically devoted to research on gaseous systems.

GasPhase offers a multi-technique approach for investigation of electronic properties low density systems (free atoms, molecules, clusters and short-lived species) in the photon energy range 13-900 eV

The broad energy range, the high resolving power and flux together with the purpose-built end-stations, make this facility ideal for investigating the spectroscopy and dynamics of basic processes like inner-shell and multiple excitations and ionization, molecular fragmentation, as well as for characterizing key processes relevant to several areas of science and technology (for example atmospheric chemistry, material science and biomedical sciences).

Research in “low density matter” focuses on spectroscopy and dynamics of atoms, molecules and clusters, as well as on radiation-matter interaction. Investigations aim at acquiring information on electronic structure, reactivity and chemical-physical behavior of target systems used in different areas of basic and applied research: biology, astrophysics, environment and cultural heritage. They are also the basis for the modeling of atmospheric chemistry, interstellar space and biochemistry. Special attention is devoted to the development of new methodologies, both theoretical and experimental, and of new instrumentation for the investigation of low-density systems.

Several classes of elementary processes under investigation:

  1. Single / multiple ionization, molecular fragmentation by photoionization with synchrotron, laser and FEL radiation.
  2. Elementary ionization processes relevant to biological radiation damage.
  3. Excitation and ionization of targets of increasing complexity (such as building block molecules of functional materials, clusters and nanoparticles of metals), in search of correlations within electronic, structural and chemical properties, and functional characteristics of materials of which they are the precursors.

Projects

INFRAIA, AHEAD2020, 2020-2024

FOE -MIUR, Progetto EurofelMIUR Roadmap ESFRI , 2015-2021

MIUR PRIN 2017, POssIBLE, 2020-2022

CERIC- ERIC, DyNaChiro, 2018-2021

Main collaborations

  • CNR - Istituto di Chimica Quantistica ed Energetica Molecolare, Pisa, Italy
  • Dept of Chemistry, University of Trieste, Trieste, Italy
  • Dept of Chemistry, University of Perugia, Perugia, Italy
  • CNR-Istituto Fotonica e Nanotecnologie – Padova
  • Dept. of Physics and Astronomy, University of Uppsala, Uppsala, Sweden
  • University of Edinburgh, Edinburgh, United Kingdom
  • Dept of Physics, University of Gothenburg, Gothenburg, Sweden
  • Dept. Physics, University Nova Gorica – Slovenia

Key publications

Chemistry - A European Journal, 24-53:14198-14206, 2018 doi:10.1002/chem.201802435

Spectroscopic Fingerprints of Intermolecular H-Bonding Interactions in Carbon Nitride Model Compounds

Lanzilotto V., Silva J.L., Zhang T., Stredansky M., Grazioli C., Simonov K., Giangrisostomi E., Ovsyannikov R., De Simone M., Coreno M., Araujo C.M., Brena B., Puglia C.
Journal of Physical Chemistry C, 122-31:17706-17717, 2018 doi:10.1021/acs.jpcc.8b06475

Lone-Pair Delocalization Effects within Electron Donor Molecules: The Case of Triphenylamine and Its Thiophene-Analog

Zhang T., Brumboiu I.E., Grazioli C., Guarnaccio A., Coreno M., De Simone M., Santagata A., Rensmo H., Brena B., Lanzilotto V., Puglia C.
Journal of Physical Chemistry A, 124-20:4115-4127, 2020 doi:10.1021/acs.jpca.0c02719

Experimental and Theoretical Photoemission Study of Indole and Its Derivatives in the Gas Phase

Plekan O., Sa'adeh H., Ciavardini A., Callegari C., Cautero G., Dri C., Di Fraia M., Prince K.C., Richter R., Sergo R., Stebel L., Devetta M., Faccialà D., Vozzi C., Avaldi L., Bolognesi P., Castrovilli M.C., Catone D., Coreno M., Zuccaro F., Bernes E., Fronzoni G., Toffoli D., Ponzi A.
Journal of Physical Chemistry C, 124-18:9774-9786, 2020 doi:10.1021/acs.jpcc.0c01764

PPT Isolated Molecule and Its Building Block Moieties Studied by C 1s and O 1s Gas Phase X-ray Photoelectron and Photoabsorption Spectroscopies

Guarnaccio A., Zhang T., Grazioli C., Johansson F.O.L., Coreno M., De Simone M., Fronzoni G., Toffoli D., Bernes E., Puglia C.
Journal of Chemical Physics, 153-20, 2020 doi:10.1063/5.0031387

High-level studies of the ionic states of norbornadiene and quadricyclane including analysis of new experimental photoelectron spectra by configuration interaction and coupled cluster calculations

Palmer M.H., Coreno M., De Simone M., Grazioli C., Aitken R.A., Hoffmann Sø.V., Jones N.C., Peureux C.
Physical Review Letters, 118-10, 2017 doi:10.1103/PhysRevLett.118.103001

Single Photon Thermal Ionization of C60

Hansen K., Richter R., Alagia M., Stranges S., Schio L., Salén P., Yatsyna V., Feifel R., Zhaunerchyk V.
Journal of Chemical Physics, 149-16, 2018 doi:10.1063/1.5047262

Investigating core-excited states of nitrosyl chloride (ClNO) and their break-up dynamics following Auger decay

Salén P., Schio L., Richter R., Alagia M., Stranges S., Zhaunerchyk V.
Physical Chemistry Chemical Physics, 17-14:9040-9048, 2015 doi:10.1039/c4cp05896h

NEXAFS and XPS studies of nitrosyl chloride

Schio L., Li C., Monti S., Salén P., Yatsyna V., Feifel R., Alagia M., Richter R., Falcinelli S., Stranges S., Zhaunerchyk V., Carravetta V.
Chemical Physics Letters, 666:1-6, 2016 doi:10.1016/j.cplett.2016.09.003

The escape of O+ ions from the atmosphere: An explanation of the observed ion density profiles on Mars

Falcinelli S., Pirani F., Alagia M., Schio L., Richter R., Stranges S., Vecchiocattivi F.
Physical Review Letters, 122-13, 2019 doi:10.1103/PhysRevLett.122.133001

Real-Time Dynamics of the Formation of Hydrated Electrons upon Irradiation of Water Clusters with Extreme Ultraviolet Light

Laforge A.C., Michiels R., Bohlen M., Callegari C., Clark A., Von Conta A., Coreno M., Di Fraia M., Drabbels M., Huppert M., Finetti P., Ma J., Mudrich M., Oliver V., Plekan O., Prince K.C., Shcherbinin M., Stranges S., Svoboda V., Wörner H.J., Stienkemeier F.