Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2009-11-09
Physics
Condensed Matter
Disordered Systems and Neural Networks
11 pages, 4 figures. Submitted to Physical Review E
Scientific paper
Correlation effects in in the fluctuation of the number of particles in the process of energy branching by sequential impact ionizations are studied using an exactly soluble model of random parking on a line. The Fano factor F calculated in an uncorrelated final-state "shot-glass" model does not give an accurate answer even with the exact gap-distribution statistics. Allowing for the nearest-neighbor correlation effects gives a correction to F that brings F very close to its exact value. We discuss the implications of our results for energy resolution of semiconductor gamma detectors, where the value of F is of the essence. We argue that F is controlled by correlations in the cascade energy branching process and hence the widely used final-state model estimates are not reliable -- especially in the practically relevant cases when the energy branching is terminated by competition between impact ionization and phonon emission.
Luryi Serge
Subashiev Arsen
No associations
LandOfFree
Correlation effects in sequential energy branching: an exact model of the Fano statistics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Correlation effects in sequential energy branching: an exact model of the Fano statistics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlation effects in sequential energy branching: an exact model of the Fano statistics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-50409