Slow Neutron Resonances in Tantalum

Abstract
A crystal spectrometer has been used to investigate the total neutron cross section in tantalum in the region 0.3 to 50 ev. Resonances were detected at 4.29, 10.36, 13.9, 20.7, 24.2, 36.7, and 39.4 ev. The strengths of these resonances vary by a factor of about 35; this condition is attributed to a large variation in neutron width. The level spacing in this odd-even monoisotopic element has been estimated as 6 ev.

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