2.3.3.3.147. NXlens_em¶
Status:
base class, extends NXcomponent
Description:
Base class for an electro-magnetic lens or a compound lens. ...
Base class for an electro-magnetic lens or a compound lens.
For NXtransformations the origin of the coordinate system is placed in the center of the lens (its polepiece, pinhole, or another point of reference). The origin should be specified in the NXtransformations.
For details of electro-magnetic lenses in the literature see e.g. L. Reimer
Symbols:
No symbol table
- Groups cited:
none
Structure:
value: (optional) NX_NUMBER {units=NX_ANY}
Descriptor for the lens excitation when the exact technical details ...
Descriptor for the lens excitation when the exact technical details are unknown or not directly controllable as the control software of the microscope does not enable or was not configured to display these values (for end users).
Although this value does not document the exact physical voltage or excitation, it can still give useful context to reproduce the lens setting, provided a properly working instrument and software sets the lens into a similar state to the technical level possible when no more information is available physically or accessible legally.
mode: (optional) NX_CHAR
Descriptor for the operation mode of the lens when other details are not ...
Descriptor for the operation mode of the lens when other details are not directly controllable as the control software of the microscope does not enable or is not configured to display these values.
Like value, the mode can only be interpreted for a specific microscope but can still be useful to guide users as to how to repeat the measurement.
voltage: (optional) NX_NUMBER {units=NX_VOLTAGE}
Excitation voltage of the lens. ...
Excitation voltage of the lens.
For dipoles it is a single number. For higher order multipoles, it is an array.
current: (optional) NX_NUMBER {units=NX_CURRENT}
Excitation current of the lens. ...
Excitation current of the lens.
For dipoles it is a single number. For higher-order multipoles, it is an array.
type: (optional) NX_CHAR
Qualitative type of lens with respect to the number of pole pieces. ...
Qualitative type of lens with respect to the number of pole pieces.
Any of these values:
single
double
quadrupole
hexapole
octupole
dodecapole
Hypertext Anchors¶
List of hypertext anchors for all groups, fields, attributes, and links defined in this class.
