C_2a^3П_■.d^3П_g 态振动能级和基态离解能的实验研究

Experifmental Study on Vibrational Levels of C_2~3П■, and the Dissociation Energy of the Electronic Ground State

测量了 c_2放电管中 d^3Π_(?)→a^3Π_(?)跃迁电振光谱带系.观察到了(2、0),(1、0)(0、0)和(0、1)各带的带头头和若干“尾带”,从而确定了 a^3Π_u、d^3Π_8二个态的较高振动能级.将 d^3Π_g 能级外推得到 c_2基态的离解能 D(?)=5.05eV.

In the C_2 discharge tube d^3Π_g→a^3Πg→a^3Πg electronic vibration spectra were measured.The heads of the (2.0). (1.0).(0.0).(0.1)band heads and some“tail bands”were obse rred.The higher vibrational Levels of the a^3Π_u.d^3Π_■ were determined.Using Birge-SPOner extrapolation of the d^3Π_■ vibrational(levels The dissociation en- ergy (D■=5.05eV) of the electronic ground state was obtained.