Textová podoba smlouvy Smlouva č. 7168151: Rozšíření stávajícího kombinovaného iontového a elektronového

                        LVSTD

                      LVSTD

 LOW VACUUM SECONDARY ELECTRONS TESCAN DETECTOR

The Low Vacuum Secondary Electron TESCAN Detector is a unique solution developed and patented by TESCAN.
Modified Everhart-Thornley design equipped with a YAG scintillator provides a lot of merits:

• True secondary electron imaging under low
vacuum conditions
• Perfect displaying of the fine surface topography
• Good-quality investigation of non-conductive
materials without special preparation
• Fine imaging of the surface structure of materials
with low atomic number
• Compact design of the LVSTD allowing fast and
easy interfacing to any chamber manufactured by
TESCAN *

*Possible configuration must be discussed with TESCAN Brno

               Versions of LVSTD detectors offered by TESCAN:

LVSTD version  LVSTD up to 500 Pa                           LVSTD up to 1 000 Pa (N2)      LVSTD up to 1 000 Pa (Water Vapor)
Condition                                                                                           water vapor or N2
Va cu u m      N2                                           N2                                        up to 1 000 Pa

               up to 500 Pa                                 up to 1 000 Pa

M i crosco pe  SEMs with low vacuum mode up to              SEMs with extended low vacuum  SEMs with extended low vacuum
                              500Pa                                mode up to 2000Pa         mode up to 2000Pa and with
                                                                                                  Water Vapor option
                                                                                                                               TESCAN reserves the right to change the document without notice.
The new versions of the LVSTD detector

TESCAN has developed two new versions of LVSTD detector working up to 1 000Pa, available as an option for W
microscopes with extended low vacuum mode up to 2000Pa.

Benefits and Features

• Improved pumping system allows using of the LVSTD up to 1 000 Pa in Low Vacuum Mode. Separate detection
chamber of the LVSTD is pumped down by a turbomolecular pump. The pumping efficiency of the gas from the
detector chamber is increased by a rotary pump which pre-pumps the turbomolecular pump.
• Increased detected signal in all three versions of the LVSTD detector.
• Combination of LVSTD up to 1 000 Pa and Water Vapor Inlet System allows observation of hydrated samples at
temperatures above zero in their natural state.

                   PL 05 #201 2.03                                                         23                 1 /2
LVSTD

Schematics of the construction:

LVSTD up to 500 Pa                                     LVSTD up to 1000 Pa

Note:

The version LVSTD up to 1 000Pa (N2) can be modified to version LVSTD up to 1 000 Pa (Water Vapor), and vice versa.
Modification can be performed solely by the manufacturer’s service technician

Application:

Investigation of non-conductive samples under low vacuum condition – Life science, Polymers, Textile Industry, Paper
Industry, Pharmacology etc.
Investigation of hydrated samples - combination of low vacuum condition with Water Vapor Inlet System– Life
science, Food Industry, Construction Industry etc.

      Fig. Larval stadium of a fly                           Fig. Gel in water solution                               TESCAN reserves the right to change the document without notice.
LVSTD (up to 1000 Pa), 600Pa, -10 oC                   LVSTD (up to 1000 Pa), 600Pa, 1 oC

        water vapor condition                                 water vapor condition

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