Publisher : The Korean Society of Mechanical Engineers
DOI : 10.22634/KSME-B.19188.8.131.5244
Title & Authors
Planar measurements of OH and number density in premixed HO flame using laser induced pre-dissociative fluorescence Jin, Seong-Ho; Nam, Gi-Jung; Kim, Hei-San; Jang, Rae-Gak; Park, Seung-Han; Kim, Ung; Park, Gyeong-Seok; Sim, Gyeong-Hun; Kim, Gyeong-Su;
Planar images of OH and with tunable KrF excimer laser which has a) 0.5 / linewidth, b) 0.5 nm tuning range, c) 150 mJ pulse energy, and d) 20 ns pulse width are obtained to determine spatial distributions of OH and in premixed H /O flame. The technique is based on planar laser induced pre-dissociative fluorescence(PLIPF) in which collisional quenching is almost avoided because of the fast pre-dissociation. Dispersed LIPF spectra of OH and are also measured in a flame in order to confirm the excitation of single vibronic state of OH and , OH and are excited on the P(8) line of the .SIGMA.(v'= 3)-X.PI.(v'||'||'&'||'||'quot;= 0) band and R(17) line of the Schumann-Runge band B.SIGMA. (v'= 0)- X.SIGMA. (v'||'||'&'||'||'quot;= 6), respectively. Dispersed OH and spectra show an excellent agreement with simulated spectrum and previous works done by other group respectively. It is confirmed that OH widely distributed around flame front area than .