| 摘要 |
In a spectrofluorimeter, comprising an excitation monochromator (18) and an emission monochromator (38), ellipsoidal reflectors (30) (34) are provided for focussing radiation to and from the sample cell (12). Baffles (50) (52) are also provided on respectively excitation and emission beams. Sample cell (12) is formed of a section of quartz tubing with chamfered ends (64) (66) and is clamped through tubular seals (73, 74) by tubular mounts (60, 62).
<??>One mount is carried by a base (80), the other one by an arm (86), arm and base being coupled for pivotal movement one relative to the other. The pivotal coupling includes a pair of elements (100, 102) on the pivotal axis and cooperable surfaces on arm and base.
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