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BL01B Infrared Beamline
Bending magnet radiation (BMR) and edge radiation (ER) are extracted from the storage ring and used as infrared synchrotron radiation light sources of BL01B1. By using the high brilliance of synchrotron infrared light, SR infrared microspectroscopy (IRMS) can reach diffraction-limited resolution with higher signal to noise ratio than conventional FTIR, especially when the aperture size below about 20 microns. Two experimental stations are now under operation. They are the infrared microspectroscopy and imaging station, and the time-resolved infrared spectroscopy station. An experimental platform aiming at high pressure and low temperature IR/Raman investigations is developed. There are various applications of BL01B1 in different research areas including protein science, cell biology, environmental science, pharmaceutical science，and high pressure science, etc.
2. Beamline Layout
The key components of the beamline include: Plane mirror M1; Flat mirror M2, M3, M4, M8, M9; Toroidal focusing mirror T1 and T2; Beamsplitter BS1, BS2, BS3; CVD diamond window.
3. Techniques and methods
？ Transmission mode
？ Transflection mode
？ ATR, Attenuated Total Reflection
？ Infrared microspectroscopy methods: Point spectrum and Mapping
？ Time-resolved infrared spectroscopy: Step scan mode and Series mode
The infrared microspectroscopy and imaging station is equipped with a Nicolet 6700 Fourier transform infrared spectrometer and a Nicolet Continuμm infrared microscope. The spectral range of this station is 600cm-1~10000 cm-1, and the spectral resolution is 0.2 cm-1. The infrared microscope is equipped with a 10× visible objective, a 15× and a 32× IR/visible objective. CaF2 and KBr beamsplitters are equipped in the spectrometer. MCT/A with liquid N2 cooled and TEC InGaAs detectors are equipped in the Continuμm infrared microscope. MCT/A with liquid N2 cooled and DTGS detectors are also equipped in the spectrometer.
The time-resolved infrared spectroscopy station is equipped with a Nicolet 8700 Fourier transform infrared spectrometer with step-scan mode for high-resolution time-resolved investigations. CaF2, KBr and PE beamsplitters are equipped in the spectrometer for near-, mid- and far-infrared investigations. Multiple detectors are available for the spectrometer. They are the DTGS w/KBr, DTGS w/PE, MCT/A with liquid N2 cooled, MCT/B with liquid N2 cooled, Si-bolometer with liquid helium cooled and photodiode MCT detectors.
Under the collaboration between the Center for High Pressure Science and Technology Advanced Research and BL01B1 beamline, an experimental platform aiming at high pressure and low temperature IR/Raman investigations is developed. The system contains a Fourier transform infrared spectrometer, a MCT detector, sample stages, two objectives with long working distance, a cryostat, and a Raman system with laser wavelength of 561/660 nm. These inserted devices are compatible with the synchrotron infrared light to provide in situ infrared and Raman measurements under high pressure and low temperature experimental conditions.
5. Beamline station Specifications
Specifications of the infrared microspectroscopy and imaging station
600 cm-1-10000 cm-1
1.9′1013phs/s/0.1% b.w. @ 1mm @300mA
Automatic sample stage
Focused spot size
Minimum aperture size
6. Additional Equipments
Linkam stage, Leica freezing microtome, Smart iTR, Liquid cell, Stereomicroscope, Tablet press, Refrigerator, and Desiccator, etc.
7.Beamline Controls, Data Acquisition and Data processing
EPICS and OMNIC, Cytospec.
Biology and medical science
High pressure science
Archaeology and Cultural Relics, etc.
Name: Zhou Xiaojie