Excitation Transfer And Energy-pooling Transfer Of The Alkali

This text is divided three parts . The first part makes use of the laser responding the fluorescence line . The fluorescence line of getting is more simpler, not mutually layer after layer.We proceed the research of excitation monecules collide with ground state atoms, and take place energy transfer with electronics excitation and vibrations. The B¹Î u electronic state of Na2 is excited by the 532.0nm laser line.The Na atomic transitions and the A¹Î£⁺_u→X¹Î£⁺_g band of Na₂ have been recorded. From the decay constants and fluorescence intensities,the rate coefficient at 360 ℃for collisional energy transfer from Na₂ ( B¹Î _u) to Na₂ ( 2¹âˆ‘⁺_g) is 7.1×10^-10cm³s^-1.The predissociation rate of the B¹ Π_u is 2.3×10⁶s^-1.Collisional excitation transfer between different vibrational levels [i.e., Na₂ B¹Î _u ( v′=6)+Na(3s)→Na₂B¹Î _u(v′′=5,7)+Na(3s)] is also investiged. Rate coefficients for v'being 5,7 are 1. 3×10^-10cm³s^-1 and 1. 1×10^-10cm³s^-1,respectively. The second part is about the atom n2P in alkali to excite resonately and we proceed the research of the fine construction of the excitation transfers. Fine-structure mixing in 62P Cs atoms is studied through excitation transfer and energy-pooling collision. Cs atoms were excited to the 6P3/2 level using a single-mode laser diode. The resulting...