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Title: Fast repetition rate (FRR) fluorometer and method for measuring fluorescence and photosynthetic parameters

A fast repetition rate fluorometer device and method for measuring in vivo fluorescence of phytoplankton or higher plants chlorophyll and photosynthetic parameters of phytoplankton or higher plants is revealed. The phytoplankton or higher plants are illuminated with a series of fast repetition rate excitation flashes effective to bring about and measure resultant changes in fluorescence yield of their Photosystem II. The series of fast repetition rate excitation flashes has a predetermined energy per flash and a rate greater than 10,000 Hz. Also, disclosed is a flasher circuit for producing the series of fast repetition rate flashes. 14 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
87723
Assignee:
Associated Universities, Inc., Washington, DC (United States) PTO; SCA: 090900; 550200; PA: EDB-95:116295; SN: 95001431116
Patent Number(s):
US 5,426,306/A/
Application Number:
PAN: 8-138,984
Contract Number:
AC02-76CH00016
Resource Relation:
Other Information: PBD: 20 Jun 1995
Research Org:
Associated Universities Inc
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 55 BIOLOGY AND MEDICINE, BASIC STUDIES; MEASURING INSTRUMENTS; DESIGN; PHOTOSYNTHETIC REACTION CENTERS; FLUORESCENCE; MEASURING METHODS