Feasibility of observing alpha decay chains from270–301117 super heavy nuclei

The alpha decay of 270–301 117 super heavy nuclei is investigated within the Coulomb and proximity potential model for deformed nuclei. We have performed a systematic search for those isotopes of Z = 117 which may be detectable through experiments via alpha decay. We have predicted 3α chains for 293 117 and 6α chains for 294 117 by the comparison of alpha half-lives and spontaneous fission half-lives and it can be seen that our predictions go hand in hand with the experimental observations. Our study reveals that those isotopes of Z = 117 with A ≥ 299 and with A ≤ 271 do not survive fission and thus the alpha decay is restricted within the range 272 ≤ A ≤ 298. Through our study, we have predicted 1α chain from 272,273,296–298 117, 2α chains from 274,275,295 117, 3α chains from 276,277,292 117 and 5α chains from 288–291 117. As our study predicts 5α chains and 3α chains consistently from 288–291 117 and 292 117, respectively, we hope these findings will provide a new guide for future experiments.