Bxfm ilhs microscope

Raman spectra with a resolution of 0.5 cm⁻¹ were recorded at room temperature on a Horiba Jobin Yvon LabRam-HR spectrometer equipped with an Olympus BXFM-ILHS microscope. Samples were excited by the 632.8 nm emission line of a He−Ne laser with a regulated power in the range 20−0.0020 mW, which provided 17−0.0017 mW focused on a 1 μm spot through a 50× microscope objective on the top surface of the sample. Before each measure, the spectrometer scale was additionally calibrated (a silicon polycrystalline plate, a characteristic band at 521 cm⁻¹).

Samples were filled into 0.3 mm quartz capillaries under an inert atmosphere in a glovebox (M. Braun). Raman spectra were recorded using a Horiba Jobin Yvon Labram-HR spectrometer (HORIBA, Ltd., 2 Miyanohigashi, Kisshoin, Minami-ku Kyoto, 601-8510 Japan) coupled with an Olympus BXFM-ILHS microscope (Olympus Corporation, Shinjuku, Tokyo, Japan) at room temperature. Samples were excited with the 633 nm emission line of a He–Ne laser.

Spectra were collected at room temperature using a Horiba Jobin-Yvon LabRam HR confocal Raman system, coupled with an Olympus BXFM-ILHS microscope. Samples were excited by the 633-nm emission line of a He−Ne laser with a power output of 7 mW on the sample through a 10× microscope objective. Thirty scans per sample were averaged over the spectral range of 100–4000 cm⁻¹ with a spectral resolution of 2 cm⁻¹ and exposure time of 1 s. The cement pastes were prepared directly on the microscope glass slides and measured at the same time intervals as for the FT-IR spectroscopic measurements.