spectrometer

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spectrometer

any instrument for producing a spectrum, esp one in which wavelength, energy, intensity, etc., can be measured

spectrometer

(spek-trom -ĕ-ter)
1. an instrument, such as a spectrograph, in which the spectrum of a source of radiation is produced, especially one in which the spectrum is recorded by electronic means so that wavelength, intensity, etc., can be measured. Spectrometers covering various wavelength ranges are used in ground-based and satellite and spaceprobe measurements.
2. an instrument for determining the distribution of energies in a beam of particles.

Spectrometer

 

In the broad sense, a spectrometer is an instrument for measuring the distribution of some physical quantity I as a function of a parameter x. For example, the function f(x) may define the distribution of electrons with respect to velocity (beta-ray spectrometer), the distribution of atoms with respect to mass (mass spectrometer), the distribution of gamma quanta with respect to energy (gamma-ray spectrometer), or the distribution of luminous intensity with respect to wavelength λ (optical spectrometer).

In the narrow sense, a spectrometer is a spectroscopic instrument for measuring optical spectra f (λ) by means of photoelectric radiation detectors.

spectrometer

[spek′träm·əd·ər]
(spectroscopy)
A spectroscope that is provided with a calibrated scale either for measurement of wavelength or for measurement of refractive indices of transparent prism materials.
A spectroscope equipped with a photoelectric photometer to measure radiant intensities at various wavelengths.
References in periodicals archive ?
To meet the criterion of the spectrometric method (NIEA W419.51A), two folds of the absorbance at 275 nm have to be smaller than 10% of the absorbance at 220 nm; otherwise, the matrix interference is too big to be omitted.
The obtained airborne magnetic and gamma ray spectrometric data were reduced, assembled and finally presented in the form of contour and composite maps at a scale of 1:50.000.
Selected reaction monitoring-mass spectrometric immunoassay responsive to parathyroid hormone and related variants.
FACT--AOAP laboratories perform spectrometric elemental wear metal analysis and physical property testing to determine the presence of abnormal wear metal particles and the lubricants serviceability at the time of analysis.
Airborne gamma-ray spectrometric (AGRS) surveys provide valuable, systematic coverage of large areas, whereas ground gamma-ray spectrometry (GGRS) greatly improves the resolution of individual radioactive element sources.
"We need to simulate different possible Jupiter atmospheres in a lab so we can discover what spectrometric signals they give," says Simon-Miller.
Otherwise, in the current proteomics--where proteins are identified primarily by correlation of mass spectrometric data to sequence in a database, rather than de novo as during the age of chemical sequencing by Edman chemistry--there is great leeway for misinterpretation of proteomic data.
Sensitive methods for monitoring lead in environmental, clinical, and biological samples usually involve either atomic emission, absorption, or mass spectrometric techniques.
SRM 1727 is sold in solid form (a block 30 mm on each side) for spectrometric analysis and may be chipped for use with chemical methods of analysis.
Evershed of the University of Bristol in England, employed a recently developed mass spectrometric technique to identify milk fats on pots from the ancient sites, which range from about 1,500 to 6,000 years old.