单词 | saturation spectroscopy |
释义 | saturation spectroscopy [´sach·ǝ`rā·shǝn spek`träs·kǝ·pē] SPECTROSCOPY A branch of spectroscopy in which the intense, monochromatic beam produced by a laser is used to alter the energy- level populations of a resonant medium over a narrow range of particle velocities, giving rise to extremely narrow spectral lines that are free from Doppler broadening; used to study atomic, molecular, and nuclear structure, and to establish accurate values for fundamental physical constants. |
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