Physics – Medical Physics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apsp.conf..577c&link_type=abstract
ASTROPARTICLE, PARTICLE AND SPACE PHYSICS, DETECTORS AND MEDICAL PHYSICS APPLICATIONS. Proceedings of the 11th Conference. Held
Physics
Medical Physics
Scientific paper
Hall coefficient and resistivity were measured in silicon samples irradiated with neutron and carbon ions. The samples have resistivities of 0.01, 56, 157, 2500 and 7000 Ω cm before irradiation. They were irradiated with fast neutrons (56, 157 and 2500 Ω cm) and carbon ions (0.01 and 7000 Ω cm). The neutron irradiation fluences are in the range between 6.1 × 1011 and 1.1 × 1015 n/cm2 while for carbon irradiation the fluences are in the range between 5.4 × 1010 and 1.0 × 1013 ions/cm2. Hall coefficient and resistivity measurements were performed by means of the Van der Pauw technique in the temperature range from 300 to 11 K. The temperature scans show a progressive reduction of the saturation regime (where RH is almost constant) with increasing irradiation fluence. For the highest resistivity samples (2500 and 7000 Ω cm) a change of Hall coefficient sign is observed at the highest fluences.
Consolandi C.
Pensotti S.
Rancoita Pier-Giorgio
Tacconi Mario
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