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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 by illuminating the phytoplankton or higher plants 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.
Inventors:
 [1];  [2]
  1. (Shoreham, NY)
  2. (Stony Brook, NY)
Issue Date:
OSTI Identifier:
869940
Assignee:
Associated Universities, Inc. (Washington, DC) BNL
Patent Number(s):
US 5426306
Application Number:
08/138,984
Contract Number:
AC02-76CH00016
Research Org:
ASSOC UNIVERSITIES INC
Country of Publication:
United States
Language:
English
Subject:
fast; repetition; rate; frr; fluorometer; method; measuring; fluorescence; photosynthetic; parameters; device; vivo; phytoplankton; plants; chlorophyll; illuminating; series; excitation; flashes; effective; bring; measure; resultant; changes; yield; photosystem; ii; predetermined; energy; flash; 10; 000; hz; disclosed; flasher; circuit; producing; predetermined energy; fast repetition; repetition rate; photosynthetic parameters; measuring fluorescence; fluorometer device; rate flashes; /250/