The Bl-200SM Research Goniometer System provides access to all of these studies with an automatic,modular and versatile system. It is a precision instrument designed for exacting scattering measurements. Based on a special turntable with precision ball bearings and stepping motor, the Bl-200SM's modern design, and quality construction guarantee precise measurements due to the wobble-free movement of the detector. It is field proven in hundreds of laboratories. It is ideal for macro-molecular studies and submicron particle sizing. The Center for Dynamics and Control of Materials (CDCM) is supported by the National Science Foundation under NSF Award Number DMR – 2308817 and previously under NSF Award Number DMR-1720595. Additional support is provided by The University of Texas at Austin.
Capabilities
- ✓light scattering
- ✓goniometry
- ✓Stepping motor controlled, multiangle measurements
- ✓Particle size and size distributions
- ✓Mw, Rg, A2 for dilute polymer solutions
- ✓Cross-correlation detector option
- ✓Avalanche photodiode detector option
- ✓CONTIN, Zimm, Guinier, Fractal, and more
- ✓Entrance aperture 3 mm
- ✓Coated, adjustable achromat for focusing scattered light onto 200 micron slit; slit position adjustable
- ✓Reflex mirror and high quality eye piece for viewing scattering region through slit
- ✓Filter turret with 637, 532, 633, 514 and 488nm narrow band pass filters and 100, 200, and 400 micron, 1, 2, and 3 mm pinhole for SLS & DLS measurements.
Specifications
| Beam Focus and Steering | Includes mounts, adjustments, and apertures |
| Turntable | 200 mm O.D. turntable, worm gear, and ball bearings; manual or automatic selection of angles in 0.01° steps; precision machine base with mounting holes; positioning table with micrometer adjustments (power supply and controller for stepping motor is optional) |
| Specimen Cell Assembly | Including thermal enclosure, centering adjustments, separate plumbing for temperature control and index matching liquids, round cell holders, square cell holder and alignment cell |
| Index Matching Vat | With optically flat and specially polished entrance window, precision machined and annealed to minimize stray light |
| Periscopic Beam Stop | Located inside vat to prevent flare from exit window; provided with coupling for use with optional, zero-angle reference detector |
| Main Detector Optics | Entrance aperture 3 mmCoated, adjustable achromat for focusing scattered light onto 200 micron slit; slit position adjustableReflex mirror and high quality eye piece for viewing scattering region through slitFilter turret with 637, 532, 633, 514 and 488nm narrow band pass filters and 100, 200, and 400 micron, 1, 2, and 3 mm pinhole for SLS & DLS measurements. |
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