BalazsBago commented 2 years ago

New term label (required)

Photoelectron photoion coincidence spectroscopy

Definition (required)

Simultaneous measurement of the vector momenta of both the electrons and ions produced in a single reaction.

Position in the hierarchy or the parent class (required)

http://purl.org/pan-science/PaNET/PaNET01202

Synonyms

Cross-references

https://en.wikipedia.org/wiki/Photoelectron_photoion_coincidence_spectroscopy

The suggestion from our scientist contains a new "sub-graph" for this technique by extending emission technique: emission technique\ion emission technique\ion spectroscopy\photoion spectroscopy\photoelectron photoion coincidence spectroscopy

spc93 commented 1 year ago

Suggested definition in this issue is:

emission technique ion emission technique (exists) ion spectroscopy photoion spectroscopy photoelectron photoion coincidence spectroscopy

This seems correct and gives the following superclasses (i.e. terms that could be used to find a dataset labelled with PEPICO):

photoelectron photoion coincidence spectroscopy (Alt. Labels: PEPICO) photoion spectroscopy ion spectroscopy ion emission technique emission technique defined by experimental physical process photon and neutron technique

=== No. of subclasses of PEPICO: 7

However, an alternative description is one which uses multiple inheritance, and is therefore more descriptive (and also increases the number of parent classes that can be searched for). For example:

photoion spectroscopy defined as:

emission technique ion emission technique ## already exists

AND

emission technique mass spectrometry ## already exists

AND

spectroscopy ## already exists

photoelectron photoion coincidence spectroscopy (alt. name PEPICO) defined as:

photoion spectroscopy

AND

photoelectron emission ## already exists

AND

defined by functional dependence versus time (already exists) coincidence technique

This gives the following superclasses (i.e. terms that could be used to find a dataset labelled with PEPICO):

photoelectron photoion coincidence spectroscopy (Alt. Labels: PEPICO) photoelectron emission photon probe defined by experimental probe electron emission technique photoion spectroscopy versus energy ion emission technique emission technique defined by experimental physical process spectroscopy mass spectrometry versus emission mass coincidence technique versus time defined by functional dependence photon and neutron technique

=== No. of subclasses of PEPICO: 17

This possibly needs a bit more discussion but the best 'sanity check' is to check that the listed superclasses are correct and (ideally) complete.

BalazsBago commented 1 year ago

I've discussed the suggested description for PEPICO with an instrument scientist and he told me that it looks good and he gave me some remark about few superclasses

versus emission mass: mass per charge is defined not only mass
photon probe: it is possible to make PEPICO with particle probe

He proposed a new definition for photoion spectroscopy: