Prompt and delayed spectroscopy of 203At : Observation of a shears band and a 29/2+ isomeric state
Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Bisso, F. D., Cox, D., Grahn, T., Greenlees, P., Herzan, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M. J., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., . . . Wang, Y. K. (2018). Prompt and delayed spectroscopy of 203At : Observation of a shears band and a 29/2+ isomeric state. Physical Review C, 97(2), Article 024301. https://doi.org/10.1103/PhysRevC.97.024301
Published in
Physical Review CDate
2018Copyright
© 2018 American Institute of Physics. Published in this repository with the kind permission of the publisher.
Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of
203
At
(
N
=
118
)
significantly. We have observed an isomeric
[
τ
=
14.1
(
3
)
μ
s
]
state with a spin and parity of
29
/
2
+
. The isomeric state is suggested to originate from the
π
(
h
9
/
2
)
⊗
∣
∣
202
Po
;
11
−
⟩
coupling, and it is depopulated through 286 keV
E
2
and 366 keV
E
3
transitions. In addition, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism.
Publisher
American Physical SocietyISSN Search the Publication Forum
2469-9985Keywords
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