Abstract
The photodisintegration of bismuth and the lead isotopes was studied by measuring the neutron emission cross sections; the lead targets were enriched in Pb 206, Pb 207 and Pb 208. The cross sections obtained for all four isotopes were very similar. They peak near 13.8 MeV, have cross sections integrated to 18.5 MeV of 3.93 MeV · b and display some structure. The latter is shown to agree with the results of a recent calculation. Below the ( γ, n) threshold the elastic scattering cross sections have been measured for lead, radio-lead and bismuth. Self-absorption experiments were also performed. The analysis of these data shows that the participating levels have widths of a few Volts. An experiment at liquid nitrogen temperature indicated that the levels in Pb 206 are narrower than those in the other two target materials.
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.
