The γ-decay from [Formula: see text] isobaric analog levels was studied in odd-mass nucleus 23 Na . The investigations were performed using the proton beam at E p = 1623, 1721, 1803 and 1835 keV. It was shown that during γ-decay, mainly low-lying levels of 23 Na are populated; among these levels, we could isolate rotational bands with [Formula: see text] and [Formula: see text], based on the seventh [Formula: see text] and ninth [Formula: see text] orbits of the Nilsson scheme, respectively. The intensities of the M1 transitions were compared with the results of the calculations within the Nilsson model.