| 摘要 |
<p>An apparatus with high sensitivity is provided for measuring the fluorescence in a medium. The apparatus comprises a pulsating light source (1), viz. a xenon flash lamp, emitting excitation light through a first filter system (3). The light is emitted from the first filter system into the medium through an optical light conductor (8) with a high numeric aperture, whereby the emitted fluorescent light returned from the medium is transmitted to a second filter system (10) through a second optical light conductor (9), also with a high numeric aperture. Both filter systems comprise optical filters. The emitted light is transmitted to a photomultiplier tube.</p> |
