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Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
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Instrumentation for the in situ control of carrier recombination characteristics during irradiation by protons

E Gaubas1, A Uleckas, J Vaitkus

  • 1Institute of Applied Research, Vilnius University, Sauletekio av. 9-III, Lithuania. eugenijus.gaubas@ff.vu.lt

The Review of Scientific Instruments
|June 3, 2010
PubMed

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Carrier Generation and Recombination01:22

Carrier Generation and Recombination

Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...