Resonance Absorption with Well-defined Line Sources

Resonance Absorption with Well-defined Line Sources. An alternative approadi focuses on a defined source intensity function. If the form of I((o) is known, then the coefficients a, p, y or a , P, y can be computed numerically, provided that the relevant oscillator strength / is known. Line absorption A may thus be directly 

Figiire 2 Atomic bromine energy-level diagram, showing the energies of the ground and first excited states. 10 cm = 11.96 kJ mol  

A very satisfactory approach for studies of Cl atom reactions uang resonance absorptimi is based on a O-atom resonance lamp onffloying argon Ar P2.0 metastables. This utilizes the reactive collision of Ar P2,o atoms with Q2, which occurs with a hi cross ection (k = 7.1 x 10, and gives ArQ excimers (see Chapter 4 of this volume) vidiicli predissodate to Cl (4r) excited atoms -  

CflA Kinetics and Energy Transfer transition array 

The transition probabilities (oscillator strengths) of the lines of the As—3p resonance multiplet of Cl vary widely, because the P—transitions are partially forbidden whilst the transitions are fully allowed. [Table 2 shows a 

---