Revered members, Read in web about cluster radioactivity, which is defined as the intermediate process between alpha decay and nuclear fission. Heavy element decays into clusters namely oxygen, carbon, silicon, magnesium etc, this process is known as cluster radioactivity. I know, natural radioactivity is the spontaneous decay of heavy element into alpha, beta and gamma rays. So what exactly is the difference between natural radioactivity and cluster radioactivity? Won't alpha, beta and gamma ray emission occur in cluster radioactivity?