Confirmation of the new isotope 178Pb
Badran, H., Scholey, C., Auranen, K., Grahn, T., Greenlees, P., Herzan, A., . . . Uusitalo, J. (2016). Confirmation of the new isotope 178Pb. Physical Review C, 94 (5), 054301. doi:10.1103/PhysRevC.94.054301
Published inPhysical Review C
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.
The extremely neutron-deficient isotope 178Pb has been produced. The GREAT spectrometer at the focal plane position of the gas-filled separator RITU was used to study the α decay of 178Pb and its α-decay chain through α-α correlations. The α decay was measured to have an energy and half-life of Eα= 7610(30) keV and t1/2 = 0.21+0.21 −0.08 ms, respectively. The half-life is consistent with recent theoretical calculations using the Coulomb and proximity potential model. The α-decay reduced width and hindrance factor for 178Pb were deduced and correspond to an unhindered l = 0 transition. In addition, the mass excess of 178Pb and the α-decay Q value were calculated from the experimental results and compared to theoretical values.