Beam attenuator | Article about beam attenuator by The Free Dictionary
beam attenuator[′bēm ə′ten·yə‚wād·ər]
An attachment to the spectrophotometer that reduces reference to beam energy to accommodate undersized chemical samples.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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For these same reasons, we also employ ROCs as beam attenuators
in the measurement system (2) for characterizing the response linearity of detectors used with high-power lasers.