Abstract
Forty-six decay chains, assigned to the decay of , were produced using the reaction at the Lawrence Berkeley National Laboratory 88-in. cyclotron. The resulting series of decays were studied using -photon and -x-ray spectroscopies. Multiple -photon coincidences were observed in the element 115 decay chain members, particularly in the third- and fourth-generation decays (presumed to be and , respectively). Upon combining these data with those from 22 decay chains observed in a similar experiment, updated level schemes in and (populated by the decay of and , respectively) are proposed. Photons were observed in the energy range expected for x rays coincident with the decay of both and However, Compton scattering of higher-energy rays and discrete transitions are present in the x-ray region preventing a definitive identification to be made based on observation of characteristic x-ray energies.
- Received 13 March 2015
- Revised 5 May 2015
DOI:https://doi.org/10.1103/PhysRevC.92.021301
©2015 American Physical Society