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 Clamshell

 EnviroESCA sample plate with a clamshell

Clamshell on an EnviroESCA sample plate. The sample was analysed without any pretreatment, drying, cleaning procedure, electrical contacting, or glueing.

EnviroESCA camera view

The clamshell on the sample plate as seen from the digital camera inside the Sample Environment during pump down. This camera view can used to monitor and record the behaviour of samples during evacuation prior to analysis.
 EnviroESCA camera view View onto the analysis area, the analyzers nozzle and one of the two gas dosing lines pointing onto the sample surface can be seen. 
 EnviroESCA camera view One of the two cameras used for the approach of the sample towards the nozzle.
 EnviroESCA camera view The second side view camera with a grazing view on the surface under investigation. The X-ray window and the two gas dosers are also visible.
 XPS spectrum of a clamshell recorded with EnviroESCA
After evacuating the Sample Environment to 1mbar a survey spectrum was measured. As the Clamshell is insulating it would charge up upon x-ray iradiation under HV or UHV conditions. Providing a 1mbar atmosphere of air results in an Environmental Charge Compensation
 XPS spectrum of a clamshell recorded with EnviroESCA
The above shown Detail of the survey spectrum clearly shows signals from Calcium on the surface of the Clamshell.
 XPS spectrum of a clamshell recorded with EnviroESCA
Detail view of the Ca 2s and N 1s region in 1 mbar ambient air for Environmental Charge Compensation.
 XPS spectrum of a clamshell recorded with EnviroESCA
Detail view of the Ca 2p region in 1 mbar ambient air for Environmental Charge Compensation.
 XPS spectrum of a clamshell recorded with EnviroESCA
Detail view of the C 1s region in 1 mbar ambient air for Environmental Charge Compensation.
 XPS spectrum of a clamshell recorded with EnviroESCA
Detail view of the Ca 3p region in 1 mbar ambient air for Environmental Charge Compensation.



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