Recoil distance lifetimes of rotational states in ${}^{236}U$

Half-lives for members of the

{}^{236}U

ground-state rotational band have been measured by the recoil-distance method following Coulomb excitation with

{}^{40}{Ar}^{8 +}

projectiles. The

B (E 2, I \to I - 2)

values in units of

e^{2} b^{2}

determined from the half-lives of the

4^{+}

6^{+}

8^{+}

10^{+}

, and

12^{+}

states are 3.03±0.20, 3.28±0.19, 3.42±0.28, 3.11±0.30, and

{3.34}_{- 0.95}^{+ 2.23}

, respectively. Transition quadrupole moments

Q_{20} (I_{i} \to I_{f})

deduced from the lifetimes are constant within experimental error and thus support the characterization of

{}^{236}U

as a good rotor to spin

12^{+}

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Recoil distance lifetimes of rotational states inU236