2015/08/03 by J. M. Gates, Κ. Ε. Gregorich, Oliver Gothe +30 · 3 citations
Physics and Astronomy · #Nuclear physics research studies #Astronomical and nuclear sciences #Quantum Chromodynamics and Particle Interactions #Physics #Spectroscopy #Photon #Photon energy #Energy (signal processing) #Atomic physics #Nuclear physics #Optics #Quantum mechanics
paper · pdf · doi:10.1103/physrevc.92.021301
openalex publication_date 2015/08/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
Forty-six decay chains, assigned to the decay of 288115, were produced using the 243Am(48Ca,3n)\phantom\rule0.16em0ex288115 reaction at the Lawrence Berkeley National Laboratory 88-in. cyclotron. The resulting series of \ensuremathα decays were studied using \ensuremathα-photon and \ensuremathα-x-ray spectroscopies. Multiple \ensuremathα-photon coincidences were observed in the element 115 decay chain members, particularly in the third- and fourth-generation decays (presumed to be 280Rg and 276Mt, respectively). Upon combining these data with those from 22 288115 decay chains observed in a similar experiment, updated level schemes in 276Mt and 272Bh (populated by the \ensuremathα decay of 280Rg and 276Mt, respectively) are proposed. Photons were observed in the energy range expected for K x rays coincident with the \ensuremathα decay of both 280Rg and 276Mt. However, Compton scattering of higher-energy \ensuremathγ rays and discrete transitions are present in the K x-ray region preventing a definitive Z identification to be made based on observation of characteristic K x-ray energies.