As discovered by Renaud Duyme, PhySH is the "Physics Subject Headings".
From their website:
PhySH (Physics Subject Headings) is a physics classification scheme developed by APS to organize journal, meeting, and other content by topic. PhySH is regularly updated and feedback from the physics community is welcome
As discovered by Renaud Duyme, PhySH is the "Physics Subject Headings".
From their website:
PhySH has multiple facets, one of which is "Techniques" and one of these Techniques is X-ray techniques and Neutron techniques
A number of the child terms of PhySH's "X-ray techniques" and "Neutron techniques" terms have corresponding terms in PaNET.
PaNET should be updated to include links to equivalent terms under PhySH.