Study of 254Es by Coulomb Excitation Gamma-Ray Spectroscopy

The 254Es gamma-ray spectrum was investigated by making coincidence between the gamma rays and scattered 58Ni nuclei. The gamma spectrum is made from coincidence data after gain matching and Doppler shift correction. From the gamma spectrum, energy and relative intensity of transitions of 254Es are deduced. The extracted data could help to extend the 254Es level scheme and in the future may permit to determine its quadrupole deformation.日本物理学会2021年次大