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Applying a relatively simple particle-rotor model to odd-odd nuclei, possiblepresence of multi chiral pair-bands is looked for, where chiral pair-bands aredefined not only by near-degeneracy of the levels of two bands but also byalmost the same expectation values of squared components of threeangular-momenta that define chirality. In the angular-momentum region where twopairs of chiral pair-bands are obtained the possible interband M1/E2 decay fromthe second-lowest chiral pair-bands to the lowest chiral pair-bands is studied,with the intention of finding how to experimentally identify the multi chiralpair-bands. It is found that up till almost band-head the intraband M1/E2 decaywithin the second chiral pair-bands is preferred rather than the interbandM1/E2 decay to the lowest chiral pair-bands, though the decay possibilitydepends on the ratio of actual decay energies. It is also found that chiralpair-bands in our model and definition are hardly obtained for $\gamma$ valuesoutside the range $25^{\circ} < \gamma < 35^{\circ}$, although either anear-degeneracy or a constant energy-difference of several hundreds keV betweenthe two levels for a given angular-momentum $I$ in "a pair bands" is sometimesobtained in some limited region of $I$. In the present model calculations theenergy difference between chiral pair-bands is always one or two orders ofmagnitude smaller than a few hundreds keV, and no chiral pair-bands areobtained, which have an almost constant energy difference of the order of a fewhundreds keV in a reasonable range of $I$.

Possible Presence and Properties of Multi Chiral Pair-Bands in Odd-Odd Nuclei with the Same Intrinsic Configuration