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Persistent URL http://purl.org/net/epubs/work/54129
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Record Id 54129
Title A liquid helium cooled UHV sample manipulatorfor surface science work
Abstract A liquid helium cooled ultra-high-vacuum sample manipulator has been designed and built for surface science work at Daresbury. It cools samples from room temperature t0 25K in 20 minutes. After 1 to 2 hours it reaches a base temperature of 20K after which it requires a liquid helium supply of 1 to 1.5 litres per hour. The reduction in temperature decreases the thermal contribution to the measured width of the tantalum Fermi level (FWHM) from 91 meV to 7 meV. The sample mounting plate can be heated to 1300K for sample cleaning and annealing. Proposals for future development include a sample mount with a much reduced thermal load from ambient radiation and thermal conduction, an improved sample mount geometry for better access to electron energy analysers and electronic control of temperature between 20K and 300K.
Organisation SRS , SERC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report DL Technical Reports DL-SCI-TM82E. 1991. DL-SCI-TM82E.pdf 1991