Abstract
The resonance energy Er and the absorption coefficient for self-indication Kr were measured for the neutron capture processes leading to the formation of the radioactive isotopes Mn56, Ga70, Ga72, and Pd109. For Mn, in addition the level width Γ was measured. The values found are the following: For Mn56, Er = 17 e.v., Kr = 1.3 cm.2 per gm., and Γ = 1.67 e.v. For Ga70, Er = 100 e.v. and Kr = 3.9 cm.2 per gm. referred to the absorbing isotope. For Ga72, Er = 50 e.v. and Kr = 8.2 cm.2 per gm. referred to the absorbing isotope. For Pd109, Er = 22 e.v. and Kr = 37 cm.2 per gm. referred to the absorbing isotope.Part of the measurements were performed employing simultaneously boron and the element itself as absorbers. For all the activities investigated, filtering through boron did not appreciably affect the absorption coefficient for self-indication, and, reciprocally, filtering through the element itself did not affect the absorption coefficient in boron. These facts are a good indication that most of the activity induced by non-thermal neutrons is due to one resonance level.In the case of Mn, the measured level width led to an approximate agreement between the measured absorption coefficient in the thermal region and the one calculated from the one-level formula.
Publisher
Canadian Science Publishing
Subject
Pharmacology (medical),Complementary and alternative medicine,Pharmaceutical Science
Cited by
1 articles.
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