[Nexus] Data from experiments involving electrochemistry

[Görzig, Heike]

Dear all,

What is NXenvironment used for? With NXenvironment comes NXsensor which is used to monitor an external condition. Wouldn’t everything that has to do with the trajectory and creation and detection of the beam go to NXinstrument. Everything what is around the sample and creating/monitoring its environment/condition somewhere close to sample? 

 

In case the description of the electrochemical part has to be more precise, and the NeXus vocabulary is not enough. Electrochemical experiments are performed also independent of beamline measurements. Maybe there is already a vocabulary for modelling electrochemical experiments? 

 

Best wishes,

Heike

 

 

Von: Smith, William <william.smith at helmholtz-berlin.de> 
Gesendet: Donnerstag, 28. Juli 2022 10:08
An: nexus at nexusformat.org
Cc: Görzig, Heike <heike.goerzig at helmholtz-berlin.de>; Günther, Gerrit <gerrit.guenther at helmholtz-berlin.de>; Garcia Diez, Raul <raul.garcia_diez at helmholtz-berlin.de>
Betreff: Data from experiments involving electrochemistry

 

Dear NeXus Community, 

 

I am producing data for a number of techniques that fit into NeXus application definitions like NXmpes, NXxas, NXfluo. During each of the experiments that we perform we may be changing the potential over the sample, or current through the sample or some combination of the two. We might measure the potential applied, the potential across the sample, and the current through the sample. 

Does anybody have a suggestion of where to include this data? I can see that NXSample has an electric_field component, but in my case it is changing throughout the experiment. https://manual.nexusformat.org/classes/base_classes/NXsample.html#nxsample

Should the potentiostat that drives the change in the sample environment be part of the INSTRUMENT field, then I would link in data /entry/instrument/potentiostat/electrode_voltage etc  

Or 

Should the potentiostat that drives the change in the sample environment be part of the SAMPLE field, then I would link in data /entry/sample/potentiostat/electrode_voltage etc

Or something else completely.


I would like to hear how other people tackle this problem.

Thanks!

Will

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