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Atomic transition lines.

Entity ["AtomicLine" ,name] or

represents an entity of type "AtomicLine" .

[prop]

gives the value of a specified property.

[{propi,…}]

gives the value of a list of properties.

EntityClass ["AtomicLine" ,{propispeci,…}]

represents a class of entities with values of propi defined by speci.

Sample Entities

  • …

Sample Entity Classes

  • …

Properties

  • CalculatedFrequency calculated frequency
    CalculatedWavelength calculated wavelength
    Element element
    Energy energy
    EnergyPrecision energy precision
    EntityClasses entity classes
    EntityTypeList entity type list
    Frequency observed frequency
    Intensity intensity
    IonizationLevel ionization level
    Isotope isotope
    LogGF log gf
    LowerLevel lower energy level
    Name name
    NISTIdentificationNumber NIST identification number
    TransitionLevels transition levels
    TransitionProbability transition probability
    TransitionStrength transition strength
    TransitionType transition type
    UpperLevel upper energy level
    Wavelength observed wavelength

Details

  • "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.

Examples

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Basic Examples  (3)

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:

Applications  (1)

Plot wavelengths within the visible spectrum for carbon:

See Also

SpectralLineData

Entity Types: AtomicLevel   Element   Isotope   Laser

Interpreter Types: Element   Isotope   Laser

History

Introduced in 2017 (11.1)

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