  Recently an experimental evidence of emission of neutron clusters consisting
of eight neutrons - octoneutrons was reported. The experiment was based on the
search for daughter nuclei associated with the octoneutron radioactivity of the
Cf-252 nucleus. The effect of long-time build-up of daughter nuclei with a long
half-life and gamma spectroscopy was utilized. In this paper we consider the
alpha spectroscopy as an alternative method of searching for octoneutron in
Cf-252 decays.
