Accession Number : AD1015358


Title :   Acquisition of a Nanosecond Laser Flash Photolysis Spectrometer to Enhance Understanding of Photochemistry and Reaction Kinetics in Undergraduate Research/Curriculum


Descriptive Note : Technical Report,01 Jan 2015,31 Dec 2015


Corporate Author : SPELMAN COLL ATLANTA GA ATLANTA United States


Personal Author(s) : Jeilani,Yassin A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1015358.pdf


Report Date : 31 Mar 2016


Pagination or Media Count : 18


Abstract : The acquisition and installation of the nanosecond flash photolysis spectrometer have been completed. The instrument is used to enhance both research and teaching at Spelman College. This acquisition includes: (1) LP980 laser flash photolysis instrument (EdinburghInstruments), (2) Nd:YAG laser, (3) cuvette holder (-40 110 degrees C), and (4) laser table. The laser system generates 532, 355, and 266 nm wavelengths. The current setup also includes: (1) an iCCD (intensified charge-coupled device) camera, 180-850 nm, (2) Hamamatsu R928 photomultiplier (200-870 nm), and (3) A Si-photodiode detector (200-1100 nm). Training to use the instrument was completed in the Fall 2015. The instrument has been used to support research on transient absorption studies of nitroaromatic compounds. The system facilitated the study of laser induced transient absorption and emission decay photochemistry. Currently, the instrument is used to study the interaction of light with nitroaromatic compounds with a focus on 1-nitropyrene and 1,4-dinitrobenzene. The preliminary data was generated using 1-nitropyrene. The results were consistent with published data. The development of new classroom teaching module based on the 1-nitropyrene results is currently in progress. The module will be integrated into the physical chemistry laboratory course in the 2016 2017 academic year.


Descriptors :   physical chemistry , spectrometers , chemical kinetics , photochemistry , college students


Subject Categories : Test Facilities, Equipment and Methods
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE