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Rock Sample 3

 

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

Rock sample in SampleEnvironment

The rock sample on the sample plate as seen from the digital camera inside the Sample Environment during pump down. This camera view can be used to monitor and record the behaviour of samples during evacuation prior to analysis.
EnviroESCA with rock sample Rock underneath the analyzer nozzle at a working distance of 0.3mm.
The image was recorded with one of the three digital microscopes at the EnviroESCAs Analysis Module. The metal pipe coming from the lower left corner allows for dosing of gases directly onto the analyzed region of the sample.
 XPS spectrum of a rock sample recorded with EnviroESCA

After evacuating the Sample Environment to 1mbar a survey spectrum was measured.
As the rock is insulating it would charge up upon x-ray iradiation und HV or UHV conditions. Providing a 1mbar atmosphere of air results in an Environmental Charge Compensation.

 XPS spectrum of a rock sample recorded with EnviroESCA
The above shown detail of the survey spectrum between 0 and 500 eV binding energy clearly shows signals from Silicon, Aluminium, Scandium and Calcium on the surface of the rock.



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