Abstract
Appearance energy is originally the threshold energy at which récoil products begin to be observed. This was determined by /γ, γ'/ reactions. Afterwards, an alternative technique has been developed to determine it by summing up recoil energy spectrum. The latter technique assumed a step function rising at energy EO in the yield-energy relation. EO should be defined as 'normalized appearance energy' /NAE/, because it is not threshold energy in its original sense. The NAE for isomerization from Δ to Λ /or reverse/ in Ru/acac/3 was estimated to be 29 eV, and that for free atom /or ion/ formation was calculated to be 34 eV. The 5 eV difference seems to indicate an energy interval in which isomerization effectively occurs in the recoil reaction.
Original language | English |
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Pages (from-to) | 89-96 |
Number of pages | 8 |
Journal | Journal of Radioanalytical and Nuclear Chemistry Letters |
Volume | 144 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1990 Jan 1 |
ASJC Scopus subject areas
- Analytical Chemistry
- Nuclear Energy and Engineering
- Radiology Nuclear Medicine and imaging
- Pollution
- Spectroscopy
- Public Health, Environmental and Occupational Health
- Health, Toxicology and Mutagenesis