Enum: MassAnalyzerEnum

Permissible Values

Value	Meaning	Description
time_of_flight	None	Instrument that separates ions by m/z in a field-free region after accelerati...
quadrupole	None	A mass spectrometer that consists of four parallel rods whose centers form th...
Orbitrap	None	An ion trapping device that consists of an outer barrel-like electrode and a ...
ion_cyclotron_resonance	None	A mass spectrometer based on the principle of ion cyclotron resonance in whic...
ion_trap	None	A device for spatially confining ions using electric and magnetic fields alon...

Slots

Name	Description
mass_analyzers	The kind of mass analyzer(s) used during the spectra collection

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/nmdc/nmdc

LinkML Source

name: MassAnalyzerEnum
from_schema: https://w3id.org/nmdc/nmdc
rank: 1000
permissible_values:
  time_of_flight:
    text: time_of_flight
    description: Instrument that separates ions by m/z in a field-free region after
      acceleration to a fixed acceleration energy.
    aliases:
    - TOF
    exact_mappings:
    - MS:1000084
  quadrupole:
    text: quadrupole
    description: A mass spectrometer that consists of four parallel rods whose centers
      form the corners of a square and whose opposing poles are connected. The voltage
      applied to the rods is a superposition of a static potential and a sinusoidal
      radio frequency potential. The motion of an ion in the x and y dimensions is
      described by the Matthieu equation whose solutions show that ions in a particular
      m/z range can be transmitted along the z axis.
    aliases:
    - Quad
    - Q
    exact_mappings:
    - MS:1000081
  Orbitrap:
    text: Orbitrap
    description: An ion trapping device that consists of an outer barrel-like electrode
      and a coaxial inner spindle-like electrode that form an electrostatic field
      with quadro-logarithmic potential distribution. The frequency of harmonic oscillations
      of the orbitally trapped ions along the axis of the electrostatic field is independent
      of the ion velocity and is inversely proportional to the square root of m/z
      so that the trap can be used as a mass analyzer.
    aliases:
    - Orbi
    exact_mappings:
    - MS:1000484
  ion_cyclotron_resonance:
    text: ion_cyclotron_resonance
    description: A mass spectrometer based on the principle of ion cyclotron resonance
      in which an ion in a magnetic field moves in a circular orbit at a frequency
      characteristic of its m/z value. Ions are coherently excited to a larger radius
      orbit using a pulse of radio frequency energy and their image charge is detected
      on receiver plates as a time domain signal. Fourier transformation of the time
      domain signal results in a frequency domain signal which is converted to a mass
      spectrum based in the inverse relationship between frequency and m/z.
    aliases:
    - ICR
    exact_mappings:
    - MS:1000079
  ion_trap:
    text: ion_trap
    description: A device for spatially confining ions using electric and magnetic
      fields alone or in combination.
    aliases:
    - LTQ
    - Ion Trap
    - Paul Trap
    exact_mappings:
    - MS:1000264