Abundance of excited state in ion beam

The fractional abundances of excited states in ion beams have been determined by making use of their different reactivity characteristics. Three methods have been employed, and these are described using 0+ ions as an example. 

Some of the existing data on the relative abundances of excited states in ion beams are given in Table 2. For more detailed listing for the case of 100 eV electrons, see ref. 34, Vol. 2, p. 464. 

---