Level Properties of ${}^{94}{Mo}$ , ${}^{98}{Mo}$ , and ${}^{100}{Mo}$ Investigated via Multiple Coulomb Excitation

The low-lying states of

{}^{94, 98, 100}{Mo}

have been investigated via multiple Coulomb excitation effected with 7.2-MeV

α

particles and 35- to 44.8-MeV oxygen projectiles. In the three isotopes studied

2^{+}

and

4^{+}

levels were excited up to 2.1 MeV. The double

E 2

excitation of a

0^{+}

level at 694.4 keV in

{}^{100}{Mo}

, very close in energy to the first

2^{+}

excited state, was observed. The

E 2

transition between the

0^{+'}

level and the first

2^{+}

state is strongly enhanced, i.e.,

\frac{B (E 2; 0^{+'} \to 2^{+})}{B (E 2; 2^{+} \to 0^{+})} = 1.8 \pm 0.3

. The values obtained for the ratio

\frac{B (E 2; 2^{+'} \to 2^{+})}{B (E 2; 2^{+} \to 0^{+})}

and the ratio

\frac{B (E 2; 4^{+} \to 2^{+})}{B (E 2; 2^{+} \to 0^{+})}

are 2.6 ± 0.6, 2.5 ± 0.4, 1.69 ± 0.22 and 1.53 ± 0.24, 2.3 ± 0.3, 1.85 ± 0.19, respectively, for

{}^{94}{Mo}

{}^{98}{Mo}

, and

{}^{100}{Mo}

. States at 2533.7, 2017.6, and 1908.1 keV have been excited in

{}^{94}{Mo}

{}^{98}{Mo}

, and

{}^{100}{Mo}

, respectively. These states are interpreted to be the result of direct

E 3

Coulomb excitation. Their

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Level Properties ofMo94,Mo98, andMo100Investigated via Multiple Coulomb Excitation