α-spectroscopy studies of the new nuclides ¹⁶⁵Pt and ¹⁷⁰Hg

Autor: Hilton, J. (J.), Uusitalo, J. (J.), Saren, J. (J.), Page, R. D. (R. D.), Joss, D. T. (D. T.), AlAqeel, M. A. (M. A. M.), Badran, H. (H.), Briscoe, A. D. (A. D.), Calverley, T. (T.), Cox, D. M. (D. M.), Grahn, T. (T.), Gredley, A. (A.), Greenlees, P. T. (P. T.), Harding, R. (R.), Herzan, A. (A.), Higgins, I. E. (I. E.), Julin, R. (R.), Juutinen, S. (S.), Konki, J. (J.), Labiche, M. (M.), Leino, M. (M.), Lewis, M. C. (M. C.), Ojala, J. (J.), Pakarinen, J. (J.), Papadakis, P. (P.), Partanen, J. (J.), Rahkila, P. (P.), Ruotsalainen, P. (P.), Sandzelius, M. (M.), Scholey, C. (C.), Sorri, J. (J.), Sottili, L. (L.), Stolze, S. (S.), Wearing, F. (F.)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Popis: The new nuclides \(^{165}\mathrm{Pt}\) and \(^{170}\mathrm{Hg}\) were produced in the reactions \(^{92}\mathrm{Mo}(^{78}\mathrm{Kr},5n)\) and \(^{96}\mathrm{Ru}(^{78}\mathrm{Kr},4n)\) at bombarding energies of 418 MeV and 390 MeV, respectively. For \(^{170}\mathrm{Hg}\) an α-particle energy of \(E_{α} = 7590(30)\) keV and half-life of \(t_{1/2} = 0.08^{+0.40}_{−0.04}\)ms were deduced, while for \(^{165}\mathrm{Pt}\) the corresponding values were 7272(14) keV and \(0.26^{+0.26}_{−0.09}\)ms. Comparison of the reduced α-decay widths with systematics indicates that both α decays are unhindered. Although combining the measured α-decay Q values with extrapolated masses suggests that both new nuclides are unbound to two-proton emission by more than 1 MeV, their α-decay half-lives are too short for this decay mode to compete. Improved data were also obtained for \(^{166,167}\mathrm{Pt}\), produced via the \(^{96}\mathrm{Ru}(^{78}\mathrm{Kr},α4n)\) and \(^{96}\mathrm{Ru}(^{78}\mathrm{Kr},α3n)\) reactions at bombarding energies of 390 MeV and 418 MeV.
Databáze: OpenAIRE