Triaxiality in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Mo</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>105</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Mo</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>107</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>from the low to intermediate spin region

The nuclear structure of the odd $^{105}\mathrm{Mo}$ and $^{107}\mathrm{Mo}$ isotopes was reinvestigated in the present work. The excited levels of $^{105}\mathrm{Mo}$ were studied by observing prompt \ensuremath{\gamma} rays emitted after the spontaneous fission of $^{248}\mathrm{Cm}$ with the EUROGAM2 multidetector array. The already well-studied level structure of $^{107}\mathrm{Mo}$ was also completed by a search for microsecond isomers. For this purpose, this nucleus was produced by the thermal-neutron-induced fission reaction at the ILL reactor, in Grenoble. We have shown that the experimental level energies and the \ensuremath{\gamma}-decay patterns are well reproduced by simple particle-rotor calculations, assuming that these nuclei have an asymmetric shape. The shapes of the odd and even Mo are compared in the neutron range $N=62\text{\ensuremath{-}}66$.

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