A spectrum is a plot of
electromagnetic energy as a function of
frequency or
wavelength.
The recording and studying of spectrum of energy levels in
atoms or
molecules in the [physical sciences]
? is
called
spectroscopy.
A device for recording a spectrum is a
spectrometer or
spectrophotometer. The latter term is used when an
optical spectrum is recorded by the device.
Types of spectroscopy
- [Auger electron spectroscopy]? - The analysis of the energies of the stimulated emission of Auger electrons
- electromagnetic spectroscopy - The study electomagnetic radiation spectra given off or absorbed by atoms or molecules changing [energy level]?s.
- infra-red spectroscopy - The study of spectra showing infra-red radiation absorbed by atoms or molecules making them vibrate.
- mass spectrometer - The study of the mass of molecules or atoms, measured by how much they bend as they are exposed to a [magnetic field]?
- Mossbauer Spectroscopy - Measures the absorption of gamma-rays by atoms bound in a solid as a function of gamma-ray energy.
- Nuclear Magnetic Resonance - Measures the resonant absorption of RF radiation by nuclei in a strong magnetic field. Absorption peaks correspond to transitions in the nuclear spin states of the nuclei.
- [Raman spectroscopy]? The study of spectra caused by the scattering? and change in frequency of light due to the transition between vibrational/rotational energy levels in molecules.
- [X-ray photoelectron spectroscopy]?
- [Rotational spectroscopy]?
- [Vibrational Spectroscopy]?
- [Electron Spin Resonance Spectroscopy]?
- See also: spectroscopic analysis
/Talk