【摘要】 本文从理论和实验上对那些适合于小体积样品分析的激光光热光谱分析方法进行比较，探讨采用激光光热光谱法进行痕量微化学分析的可行性。更多还原

【Abstract】 In the K Rb vaper mixtures,the two photon stepwise excitation of rubidium atoms from the ground state to the state R b 7 2D is obtained by the use of a rubidium lamp and a cw dye laser.The cross sections for the collisional process R b(7 2D)+K(4S)→Rb(5S)+K(7S 5D)have been measured by observation of the resulting fluorescence.The ratio of K(7S 5D) to Rb7D fluorescence contains a contribution from K 7S5D mixing.The contribution could effectively be subtracted out using a second experiment in which a potassium lamp and a cw dye laser were used to pump the K7S or 5D state,and the ratio of 7S to 5D or 5D to 7S fluorescence was monitored.The cross sections (in 10 -15 cm 2)for Rb7D→K7S.5D excitation transfer are 25 8±10 3 and 1 5±0 6 respectively.更多还原