Abstract
A series of InSb bars were doped with Sn donors by subjecting them to a thermal neutron flux. Reactor locations with different thermal/fast-neutron flux ratios were used, permitting some assessment of the type of damage emanating from fast-neutron exposure. Various figures of merit for the quality of the sample, such as the total electron concentration n, electrical mobility mu and the nuclear spin-lattice relaxation rate 1/T1, are discussed for samples with reactor exposure times ranging up to several hours. The study attempts to quantify the advantages to be gained from sample irradiation in reactor locations with favourable thermal/fast-neutron flux ratios. The indications are that fast-neutron damage has a detrimental effect on the induced electron concentration.
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