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Your search keyword '"Hussam Badran"' showing total 5 results
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5 results on '"Hussam Badran"'

1. Observation of the proton emitter $${}_{\,57}^{116}$$ 57 116 La59

Author

Wei Zhang, Bo Cederwall, Özge Aktas, Xiaoyu Liu, Aysegül Ertoprak, Ayse Nyberg, Kalle Auranen, Betool Alayed, Hussam Badran, Helen Boston, Maria Doncel, Ulrika Forsberg, Tuomas Grahn, Paul T. Greenlees, Song Guo, Jacob Heery, Joshua Hilton, David Jenkins, Rauno Julin, Sakari Juutinen, Minna Luoma, Olavi Neuvonen, Joonas Ojala, Robert D. Page, Janne Pakarinen, Jari Partanen, Edward S. Paul, Costel Petrache, Panu Rahkila, Panu Ruotsalainen, Mikael Sandzelius, Jan Sarén, Stuart Szwec, Holly Tann, Juha Uusitalo, and Robert Wadsworth

Subjects
Astrophysics, QB460-466, Physics, QC1-999
Abstract

Neutron-proton pairing is a topic of continuous interest in nuclear physics and open questions remain. The authors experimentally observe direct proton decay from the ground state of odd-odd 116La, providing support for the presence of strong neutron-proton pair correlations in this exotic, neutron deficient system.

Published
2022
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2. Reassigning the shapes of the 0+ states in the 186Pb nucleus

Author

Joonas Ojala, Janne Pakarinen, Philippos Papadakis, Juha Sorri, Mikael Sandzelius, Daniel M. Cox, Kalle Auranen, Hussam Badran, Paul J. Davies, Tuomas Grahn, Paul T. Greenlees, Jack Henderson, Andrej Herzáň, Rolf-Dietmar Herzberg, Joshua Hilton, Ulrika Jakobsson, David G. Jenkins, David T. Joss, Rauno Julin, Sakari Juutinen, Tibor Kibédi, Joonas Konki, Gregory J. Lane, Matti Leino, Jarkko Liimatainen, Christopher G. McPeake, Olavi Neuvonen, Robert D. Page, Edward Parr, Jari Partanen, Pauli Peura, Panu Rahkila, John Revill, Panu Ruotsalainen, Jan Sarén, Catherine Scholey, Sanna Stolze, Juha Uusitalo, Andrew Ward, and Robert Wadsworth

Subjects
Astrophysics, QB460-466, Physics, QC1-999
Abstract

The authors study an interesting phenomena of shape coexistence in 186Pb. In an elegant and well-documented experiment, they confirm the coexistence of the three 0+ states in the 186Pb nucleus and reassign the shapes associated with the excited 0+ states.

Published
2022
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4. First observation of the proton emitter 116La: Evidence for strong neutron-proton pairing from proton separation energies and emission probabilities

Author

Wei Zhang, Bo Cederwall, Ozge AKTAS, Xiaoyu Liu, Aysegül Ertoprak, Ayse Nyberg, Kalle Auranen, Betool Alayed, Hussam Badran, Helen Boston, Maria Doncel, Ulrika Forsberg, Tuomas Grahn, Paul Greenlees, Song GUO, Jacob Heery, Joshua Hilton, David Jenkins, Rauno Julin, Sakari Juutinen, Minna Luoma, Olavi Neuvonen, Joonas Ojala, Robert Page, Janne Pakarinen, Edward Paul, Costel Petrache, Panu Rahkila, Panu Ruotsalainen, Mikael Sandzelius, Jan Sarén, Stuart Szwec, Holly Tann, Juha Uusitalo, and Robert Wadsworth

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The discovery of the new proton emitter $^{116}_{~57}$La$_{59}$, 23 neutrons away from the only stable La isotope, $^{139}_{~57}$La$_{82}$, is reported. The $^{116}$La nuclei were synthesised in the fusion-evaporation reaction $^{58}$Ni($^{64}$Zn, p4n)$^{116}$La and identified via their proton radioactivity using the MARA mass spectrometer and the silicon detectors placed at its focal plane. Comparisons of the measured proton energy ($E_{p} = 718 \pm 9 $ keV) and half-life ($T_{1/2} = 50 \pm 22$ ms) with values calculated using %microscopic nuclear barrier penetration theory the Universal Decay Law approach indicate that the proton is emitted with an orbital angular momentum $l=2$ and that its emission probability is enhanced relative to its closest, less exotic, odd-even lanthanum isotope ($^{117}_{~57}$La$_{60}$) while the proton-emission $Q$-value is lower. We propose this to be a signature for the presence of strong neutron-proton pair correlations in this exotic, neutron deficient system. The observations of $\gamma$ decays from isomeric states in $^{116}$La and $^{117}$La are also reported.

Published
2022

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