NO^+W^1△電子状態に収束する812Åリドベリー吸収帯の解析

Abstract

The rotational structure of the 812 Å absorption band, of which the 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.