2.3.3.3.175. NXpulser_apm¶
Status:
base class, extends NXobject
Description:
Base class for a laser- and/or voltage-pulsing device used in atom probe ...
Base class for a laser- and/or voltage-pulsing device used in atom probe microscopy.
Symbols:
The symbols used in the schema to specify e.g. dimensions of arrays.
p: Number of pulses collected in between start_time and end_time resolved by an instance of NXevent_data_apm.
- Groups cited:
Structure:
pulse_mode: (optional) NX_CHAR
Detail whereby ion extraction is triggered methodologically. ...
Detail whereby ion extraction is triggered methodologically.
Any of these values:
laser|voltage|laser_and_voltagepulse_frequency: (optional) NX_FLOAT (Rank: 1, Dimensions: [p]) {units=NX_FREQUENCY}
Frequency with which the pulser fire(s).
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
pulse_fraction: (optional) NX_FLOAT (Rank: 1, Dimensions: [p]) {units=NX_DIMENSIONLESS}
Fraction of the pulse_voltage that is applied in addition ...
Fraction of the pulse_voltage that is applied in addition to the standing_voltage at peak voltage of a pulse.
If a standing voltage is applied, this gives nominal pulse fraction (as a function of standing voltage). Otherwise, this field should not be present.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
pulse_voltage: (optional) NX_FLOAT (Rank: 1, Dimensions: [p]) {units=NX_VOLTAGE}
Pulsed voltage, in laser pulsing mode this field can be omitted.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
pulse_number: (optional) NX_UINT (Rank: 1, Dimensions: [p]) {units=NX_UNITLESS}
Absolute number of pulses starting from the beginning of the experiment.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
standing_voltage: (optional) NX_FLOAT (Rank: 1, Dimensions: [p]) {units=NX_VOLTAGE}
Direct current voltage between the specimen and the (local electrode) in ...
Direct current voltage between the specimen and the (local electrode) in the case of local electrode atom probe (LEAP) instrument. Otherwise, the standing voltage applied to the sample, relative to system ground.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
FABRICATION: (optional) NXfabrication
SOURCE: (optional) NXsource
Atom probe microscopes use controlled laser, voltage, or a combination of ...
Atom probe microscopes use controlled laser, voltage, or a combination of pulsing strategies to trigger ion extraction via exciting and eventual field evaporation field emission of ion at the specimen surface.
Given name/alias.
wavelength: (optional) NX_FLOAT {units=NX_WAVELENGTH} ⤆
Nominal wavelength of the laser radiation.
power: (optional) NX_FLOAT {units=NX_POWER} ⤆
Nominal power of the laser source while illuminating the specimen.
pulse_energy: (optional) NX_FLOAT (Rank: 1, Dimensions: [p]) {units=NX_ENERGY} ⤆
Average energy of the laser at peak of each pulse.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
FABRICATION: (optional) NXfabrication ⤆
BEAM: (optional) NXbeam
Details about specific positions along the laser beam ...
Details about specific positions along the laser beam which illuminates the (atom probe) specimen.
incidence_vector: (optional) NX_NUMBER (Rank: 2, Dimensions: [p, 3]) {units=NX_LENGTH}
Track time-dependent settings over the course of the measurement ...
Track time-dependent settings over the course of the measurement how the laser beam shines on the specimen, i.e. the mean vector is parallel to the laser propagation direction.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
pinhole_position: (optional) NX_NUMBER (Rank: 2, Dimensions: [p, 3]) {units=NX_LENGTH}
Track time-dependent settings over the course of the measurement ...
Track time-dependent settings over the course of the measurement where the laser beam exits the focusing optics.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
spot_position: (optional) NX_NUMBER (Rank: 2, Dimensions: [p, 3]) {units=NX_LENGTH}
Track time-dependent settings over the course of the ...
Track time-dependent settings over the course of the measurement where the laser hits the specimen.
@logged_against: (optional) NX_CHAR
Path to pulse_identifier in an instance of NXevent_data_apm.
TRANSFORMATIONS: (optional) NXtransformations ⤆
Affine transformations which describe the geometry how the ...
Affine transformations which describe the geometry how the laser focusing optics/pinhole-attached coordinate system is defined, how it has to be transformed so that it aligns with the specimen coordinate system.
Hypertext Anchors¶
List of hypertext anchors for all groups, fields, attributes, and links defined in this class.
