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Theoretical prediction of the impact of Auger recombination on charge collection from an ion track

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1 Author(s)
Edmonds, L.D. ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

The theoretical analysis presented indicates that Auger recombination can reduce charge collection from very dense ion tracks in silicon devices. It is of marginal importance for tracks produced by 270-MeV krypton, and therefore it is of major importance for ions exhibiting a significantly larger loss. The analysis shows that recombination loss is profoundly affected by track diffusion. As the track diffuses, the density and recombination rate decrease so fast that the linear density (number of electron-hole pairs per unit length) approaches a nonzero limiting value as t→∞. Furthermore, the linear density very nearly equal to this limiting value is a few picoseconds or less. When Auger recombination accompanies charge transport processes that have much longer time scales, it can be simulated by assigning a reduced linear energy transfer to the ion

Published in:

Nuclear Science, IEEE Transactions on  (Volume:38 ,  Issue: 5 )

Date of Publication:

Oct 1991

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