https://doi.org/10.1140/epja/i2004-10020-2
Letter
New isotope 265Bh
1
Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, PRC
2
Department of Physics, Nanjing University, 210008, Nanjing, PRC
* e-mail: zggan@impcas.ac.cn
A new isotope 265
Bh was produced and identified at the Sector Focus Cyclotron of the Heavy Ion Research Facility in Lanzhou. This experiment was performed via the reaction of an 243
Am target with 168 MeV 26
Mg ions. Identification was made by observation of correlated -particle decays between the new isotope 265
Bh and its 261
Db and 257
Lr daughter nuclei using a set of rotating-wheels system. A total of 8 correlated decay events of 265
Bh and 4 decay events of 264
Bh were observed. 265
Bh decays with a 0.94 -0.31
+ 0.70 s half-life by emission of
-particles with an average energy of
MeV. The half-life and
decay energy of 265
Bh from this experiment are in agreement with theoretical predictions.
© Società Italiana di Fisica and Springer-Verlag, 2004