Auger electron emission following double capture in the collision 105-keV Ne{sup 10+}+He
In the collision 150-keV Ne{sup 10+}+He, the double capture of the target electrons by the projectile occurs on the configurations 3{ell}n{ell}{sup prime} and 4{ell}n{ell}{prime} (n>4). The corresponding Auger electron emission cross sections {sigma}{sup a}{sub n{ell}n{prime}{ell}{prime}} were measured by means of high resolution Auger spectroscopy. The cross sections {sigma}{sup a}{sub 3{ell}n{prime}{ell}{prime}} follow a n{sup {minus}3} law, whereas {sigma}{sup a}{sub 4{ell}n{prime}l{prime}} decrease rapidly with n. Auger yields were evaluated using a Hartree Fock procedure and double capture cross sections were deduced. Auger yields are found to be rather constant for n up to 9. Therefore, the cross sections for the production of the configurations 3{ell}n{ell}{prime} follow the n{sup {minus}}3 law. The authors show, using a simple Landau-Zener model, that the electron correlation may be responsible for the capture on the configurations 3{ell}n{ell}{prime} (n=6 to 9). The production of the configurations 4{ell}n{ell}{prime} is rather selective. The maximum is found for n=5. A comparison with single electron capture shows that two monoelectronic processes may populate the configurations 4{ell}n{ell}{prime}.
- OSTI ID:
- 199791
- Report Number(s):
- CONF-941129--
- Country of Publication:
- United States
- Language:
- English
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