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論文 |
論文
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HAYASHIDA, Kazuhiro ; SHIRAI, Hiroyuki ; AMAGAI, Kenji ; ARAI, Masataka
概要:
application/pdf<br />Journal Article<br />Rotational temperature of NO molecule in methane/air premixed flame was estima
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ted by a spectral matching method. A tunable narrow band ArF excimer laser was used to excite the D^2Σ^+ ← X^2∏(0,1) band system of NO. Laser beam was introduced in a flame, and the laser-induced fluorescence was resolved into a spectrum by using a spectrograph. On this spectrum, e and δ bands of upper vibrational level of v'=0 were analyzed. In order to use a spectral matching method, profiles of ε and δ band spectra were calculated theoretically in detail with reliable molecular constants and exact equations, and they were modulated by an experimental slit function. Since the profile of band spectrum was determined as a function of a rotational temperature, a rotational temperature could be estimated using the temperature where the profile of every band spectrum obtained theoretically is fitted to that of experimentally obtained. Applying a spectral matching method on the ε(0,3), ε(0,4) and δ(0,2) band of NO, it was obtained that the rotational temperature is about 1000 K. The obtained rotational temperature is almost agreed with the thermocouple temperature.
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論文 |
論文
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竹澤, 賛三
概要:
application/pdf<br />Departmental Bulletin Paper<br />The rotational structure of the 812 Å absorption band, of which th
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e upper state was assigned to be the v'=3 level of the Rydberg band converging to the W^1△ state of NO^+, is analyzed and its internuclear distance of the upper state is determined to be 1.33 Å from the rotational constant B=1.27cm^<-1>. The value is found to be supportive of the previous assumption that the band belongs to the first member of the Rydberg series mentioned above, because the internuclear distance of the W^1△ state is theoretically determined to be 1.34 Å. Since most of the bands observed in the region below 1000 Å are extremely diffuse because of autoionization. Any rotationally well-resolved band has not been observed except the author's previos work by means of the high resolution spectroscopy with the reciprocal dispersion of 0.6cm^<-1>/mm.
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