Abstract
Neutrons with an energy spread of \ifmmode\pm\else\textpm\fi{}40 kev bombarded a disk of natural cadmium; among the products of bombardment was metastable ${\mathrm{Cd}}^{111m}$ produced by inelastic scattering. The yield of ${\mathrm{Cd}}^{111m}$ was measured from its threshold at 396 kev up to 1300 kev. Abrupt changes in the slope of the yield curve are interpreted as showing the onset of ($n, {n}^{\ensuremath{'}}$) excitation of higher levels. Such levels occur at 720 and 1150 kev. Below 720 kev, the ${\mathrm{Cd}}^{111m}$ was excited only by direct transition from the ground state. We have measured at 720 kev the cross section for this ($n, {n}^{\ensuremath{'}}$) event, which involves known changes of energy, spin, and parity. The cross section is about 10 millibarns.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
