LT3B Helium Flow Cryostat
The ARS manufactured LT3B Helitran® is a true UHV cold head (10-11 Torr) where all of the rubber o-ring seals have been replaced with welded joints and metal seals.
Like all of our LT3 liquid helium flow cryostats, the LT3B is an advanced liquid helium flow cryostat utilizing many unique features, such as the matrix heat exchanger and the co-axial shield flow transfer line, to achieve unparalleled efficiency and ultra low vibration levels.
The combination of true UHV and angstrom level vibrations makes the LT3B ideal for low temperature STM applications.
For UHV surface science where very long cold fingers are required, we have the LT3M with customizable length up to 1200 mm and rigid support tube to allow for cleaving and manipulation.
LT3B
120 x 120 angstrom image of azobenzene molecules on Au(111) taken at T = 15 K
Courtesy of:
Prof. Michael F. Crommie
University of California at Berkeley
Physics Department
Prof. Michael F. Crommie
University of California at Berkeley
Physics Department
LT3B
This LT3B liquid flow cryostat for UHV and ultra-low vibration applications was customized for a home-built STM instrument. The custom flanges were designed by the customer and integrated into the final cryostat design. ARS provided 3D models of this custom system to help the customer verify the system fit-up prior to production.
LT3B AND LT3-OM
The cryostat on the left is a liquid helium cold cryostat for optical microscopy with adaptations for mounting and thermally anchoring a diamond anvil cell. The one on the right is a liquid helium cooled cryostat for FTIR and THZ applications featuring a 10 mm CVD diamond window, spectrometer adapter flange, and Z-translator for three sample measurement.