Labs and instruments

Inelastic Ultraviolet Scattering Offline laboratory (IUVS-Offline)

Elettra Sincrotrone Trieste

UV Resonance Raman (UVRR) spectroscopy is a very valuable tool for collecting chemically specific information about a large variety of systems thanks to the simultaneous coupling of electromagnetic radiation with the electronic charge localized in particular chromophoric groups of molecules. The IUVS (Inelastic Ultraviolet Scattering) Offline Laboratory, recently renovated thanks to the project Pathogens Readiness Platform for CERIC-ERIC upgrade (PRP@CERIC)*, is a user facility for UV Resonance Raman scattering (UVRR) spectroscopy at Elettra Sincrotrone Trieste with tunable laser sources emitting in the range between 150 and 400 nm. Our mission is to develop and offer to users advanced UVRR setup exploiting both fixed-energy UV laser sources (at 213, 224, 248 and 266 nm) and fully tunable ps- and ns- laser sources with emission in the FUV-DUV-near UV range (150-315 nm, 350-475 nm).

Technical specifications

The UV Resonance Raman instrumentation operating at IUVS- Offline laboratory exploits different laser sources and sampling modes (macro and micro) that can be set depending on the experimental requirements.

The micro-UVRR setup Monovista enables to perform UV Resonance Raman spectroscopy experiments using fixed-energy laser sources emitting at 213, 224 and 266 nm, both with macro- and micro-sampling mode with a good spectral resolution (0.9 cm^-1/pixel @213 nm) and lateral resolution of few mm. A thermal-controlled sample holder can be arranged in the macro-configuration in order to vary the temperature of the sample in the range between about 0 and 100 °C. The instrument is ideal for measuring UVRR spectra of solid, liquid and gels samples under different experimental conditions.

The fully Integrated, Lab Model, Deep UV Resonance Raman & Photoluminescence Spectrometer (DUV Raman PL 200, Photon Systems) with excitation wavelength at 248 nm and with microscopic imaging is available. The instrument allows to collect DUV excited Raman and photoluminescence spectra and spectral maps of a large variety of samples with lateral resolution of few mm. The system is equipped with a cuvette holder and a flow cell for liquids analysis and a sample cooling stages for measurements in the range of temperature from -180 to 600 °C. The instrument is ideal for measuring in a very easy and quick way different kind of samples, for instance for applications in forensic science and biology.

The UVRR setup Trivista enables to perform UV Resonance Raman spectroscopy experiments in macro configuration with excitation wavelength in the FUV-DUV-near UV range. The two ns- and ps- laser sources Credo-Tisa and Tsunami (Spectra Physics) provide completely tunable emission in the range between 191-315 nm and 350-475 nm with different repetition rates (80 MHz, 1-3 kHz) and spectral bandwidth. The analyser system is composed by three interconnected Czerny-Turner spectrometer (Trivista system, Princeton Instruments) with focal length of 500 mm, 500 mm and 750 mm respectively. The three spectrometers have been coupled to work both in additive and subtractive configurations. The backscattering configuration and the geometrical characteristics of the Raman set-up allow the use of a large variety of sample environments. For measurements of liquids and/or aqueous solution, we have employed a specific sample holder, able to thermalize the sample in a temperature range of 5-120 °C.

Information for users

We invite users and collaborators to discuss their proposals with the laboratory local contacts well in advance before the submission deadline. This is crucial for a careful assessment of the experiment feasibility and may lead to improvements in the proposed experimental plan. In a restricted number of cases, when doubts arise about the suitability of your samples (sample absorption etc), it may be possible for you to arrange a test.

Contacts:

Claudio Masciovecchio

Tel: +39 040 375 8093 (office) | +39 040 375 8726/8716 (laboratory)

Barbara Rossi

Tel: +39 040 375 8042 (office) | +39 040 375 8726/8716 (laboratory)

Alessandro Gessini

Tel: +39 040 375 8932 (office) | +39 040 375 8726/8716 (laboratory)

For more detailed information visit the beamline’s main homepage.

*The project “Pathogen Readiness Platform for CERIC-ERIC Upgrade” – PRP@CERIC is financed under the PNRR (National Recovery and Resilience Plan) under Mission 4 “Education and Research”, Component 2 “From Research to Enterprise”, Investment Line 3.1 “Fund for the creation of an integrated system of research and innovation infrastructures”,” funded by the European Union – Next Generation EU.