4.3.3.2. NXaperture_em

Status:

base class, extends NXobject

Description:

Details of an individual aperture for electron beams.

Symbols:

No symbol table

Groups cited:

NXmanufacturer, NXtransformations

Structure:

name: (optional) NX_CHAR

Given name/alias of the aperture.

value: (optional) NX_NUMBER {units=NX_ANY}

Relevant value from the control software.

This is not always just the diameter of (not even in the case) of a circular aperture. Usually it is a mode setting value which is selected in the control software. Which settings are behind the value should be defined for now in the description field, if these are known in more detail.

description: (optional) NX_CHAR

Ideally, a (globally) unique persistent identifier, link, or text to a resource which gives further details. Alternatively a free-text field.

MANUFACTURER: (optional) NXmanufacturer

TRANSFORMATIONS: (optional) NXtransformations

Affine transformation which detail the arrangement in the microscope relative to the optical axis and beam path.

Hypertext Anchors

List of hypertext anchors for all groups, fields, attributes, and links defined in this class.

NXDL Source:

https://github.com/nexusformat/definitions/blob/main/contributed_definitions/NXaperture_em.nxdl.xml