AtomicLine

Atomic transition lines.

represents an entity of type "AtomicLine".

[prop]

gives the value of a specified property.

[{prop_i,…}]

gives the value of a list of properties.

EntityClass["AtomicLine",{prop_ispec_i,…}]

represents a class of entities with values of prop_i defined by spec_i.

Sample Entities

"AtomicLine" entities consist of transition lines for elements and isotopes.
"AtomicLine" entity classes include groupings of neutral and ionized elements and isotopes as well as famous hydrogen and sodium line series.
Some properties are available for the "AtomicLine" entity type as a whole and can be given using the form EntityValue["AtomicLine",property]. Such properties include:

	"Properties"	the list of available properties
	"PropertyCanonicalNames"	the standard names of available properties
	"SampleEntities"	a sample list of available entities (typically of length 10)
	"SampleEntityClasses"	a sample list of available entity classes (typically of length 10)
	"EntityCount"	number of entities available
	"Entities"	the list of available entities
	"EntityCanonicalNames"	the standard names of available entities
	"EntityClasses"	the list of available entity classes
	"EntityClassCanonicalNames"	the standard names of available entity classes
	"PropertyClasses"	the list of available property classes
	"PropertyClassCanonicalNames"	the standard names of available property classes
	"PropertyCount"	number of properties available

The following annotations can be used in the third argument of EntityValue["AtomicLine",property,annotation]:

	"Source"	source information for the property
	"Date"	the date associated with the entity-property value (if any)
	"EntityAssociation"	an association of entities and entity-property values
	"PropertyAssociation"	an association of properties and entity-property values
	"EntityPropertyAssociation"	an association in which the specified entities are keys, and values are a nested association of properties and entity-property values
	"PropertyEntityAssociation"	an association in which the specified properties are keys, and values are a nested association of entities and entity-property values
	"Dataset"	a dataset in which the specified entities are keys, and values are an association of property names and entity-property values

The following annotations can be used in the second argument of EntityValue[property,annotation]:

	"Qualifiers"	the list of possible qualifiers for the property
	"QualifierValues"	the list of possible values that can be given to each qualifier
	"DefaultQualifierValues"	the list of default values for the property's qualifiers
	"Description"	a brief textual description of the property
	"Definition"	a detailed textual definition of the property
	"PhysicalQuantity"	the physical quantity associated with the entity-property value
	"Unit"	the unit associated with the entity-property value

A qualifier value of Automatic indicates that an applicable format of values can be used; e.g. for the "Date" qualifier, this includes a proper date or date span.

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Use SpectralLineData for entity discovery by searching for lines at specific wavelength:

Find entities within a specific wavelength range:

Locate atomic lines based on atomic levels:

Locate a transition with a level and the frequency of the emitted photon:

Find a property value for an entity:

Retrieve a dataset of all available properties for an entity:

Plot wavelengths within the visible spectrum for carbon:

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