Spectroscopy of At 201 including the observation of a shears band and the 29/2 + isomeric state
Auranen, K., Uusitalo, J., Juutinen, S., Jakobsson, U., Grahn, T., Greenlees, P., Hauschild, K., Herzan, A., Julin, R., Konki, J., Leino, M., Pakarinen, J., Partanen, J., Peura, P., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sarén, J., Scholey, C., . . . Stolze, S. (2015). Spectroscopy of At 201 including the observation of a shears band and the 29/2 + isomeric state. Physical Review C, 91(2), Article 024324. https://doi.org/10.1103/PhysRevC.91.024324
Published inPhysical Review C
© 2015 American Physical Society. This is an Open Access article under the terms of the Creative Commons License which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
The excited states of 201At were studied and an isomeric 29/2 + state [T1/2 = 3.39(9) μs] was identified by using a fusion-evaporation reaction, a gas-filled recoil separator, and recoil gating techniques. The 29/2 + state is suggested to originate from the π(h9/2) ⊗ |200Po;11− configuration, and it decays through the 269- and 339-keV E2- and E3-type transitions, respectively. Moreover, a cascade of magnetic dipole transitions that is suggested to originate from a shears band was observed by using recoil-gated γ − γ (−γ ) coincidence techniques.
PublisherAmerican Physical Society
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