Eur. Phys. J. A (2013) 49: 127
https://doi.org/10.1140/epja/i2013-13127-3

Regular Article - Theoretical Physics

Probable alpha and ¹⁴C cluster emission from hyper Ac nuclei

School of Pure and Applied Physics, Kannur University, Swami Anandatheertha Campus, 670327, Payyanur, India

^* e-mail: drkpsanthosh@gmail.com

Received: 15 April 2013
Revised: 14 September 2013
Accepted: 25 September 2013
Published online: 21 October 2013

Abstract

A systematic study on the probability for the emission of ⁴He and ¹⁴C cluster from hyper _Λ ^207–234 Ac and non-strange normal ^207–234Ac nuclei are performed for the first time using our fission model, the Coulomb and proximity potential model (CPPM). The predicted half lives show that hyper _Λ ^207–234 Ac nuclei are unstable against ⁴He emission and ¹⁴C emission from hyper _Λ ^217–228 Ac are favorable for measurement. Our study also show that hyper _Λ ^207–234 Ac are stable against hyper _Λ ⁴ He and _Λ ¹⁴ C emission. The role of neutron shell closure (N = 126) in hyper _Λ ²¹⁴ Fr daughter and role of proton/neutron shell closure (Z ≈ 82, N = 126) in hyper _Λ ²¹⁰ Bi daughter are also revealed. As hyper-nuclei decays to normal nuclei by mesonic/non-mesonic decay and since most of the predicted half lives for ⁴He and ¹⁴C emission from normal Ac nuclei are favourable for measurement, we presume that alpha and ¹⁴C cluster emission from hyper Ac nuclei can be detected in laboratory in a cascade (two-step) process.