| 释义 |
monochromator Physics.|ˈmɒnəkrəmeɪtə(r), mɒnəʊˈkrəʊmeɪtə(r)|
[f. monochromatic a. + -or.]
Any device used to select radiation of a single wavelength or energy (or, in practice, a very narrow range of wavelengths or energies).
1909Chem. Abstr. III. 2074 The monochromator is a spectrometer arrangement of the Pellin and Broca or Hilger type with constant deviation of 90°, in which the eyepiece can be replaced by a second slit. 1924E. C. C. Baly Spectroscopy (ed. 3) I. iv. 109 Any fixed arm spectrometer can be converted into a monochromator by replacing the eyepiece by a slit placed in the focus of the telescope lens or mirror. 1955C. B. Walker tr. Guinier & Fournet's Small-Angle Scattering X-Rays iii. 100 Bent crystals were originally introduced in X-ray spectroscopy, serving as analyzers capable of producing intense spectra; they can serve equally well as monochromators. 1969Nature 11 Oct. 146/1 Changes in diffraction geometry, and more especially the use of focusing monochromators, should yield a considerably higher neutron flux, permitting the use of smaller crystals. |