Discovery of the proton emitting nucleus $^{159}$Re
- Joss, D.T.
- Darby, I.G.
- Page, R.D.
- Uusitalo, J.
- Eeckhaudt, S.
- Grahn, T.
- Greenlees, P.T.
- Jones, P.M.
- Julin, R.
- Juutinen, S.
- Ketelhut, S.
- Leino, M.
- Leppänen, A.-P.
- Nyman, M.
- Pakarinen, J.
- Rahkila, P.
- Sarén, J.
- Scholey, C.
- Steer, A.N.
- Al-Khalili, J.S.
- Cannon, A.J.
- Stevenson, P.D.
- Ertürk, S.
- Gall, B.
- Hadinia, B.
- Venhart, M.
- Simpson, J.
DOIAbstract
International audienceThe observation of the new nuclide ^{159}Re provides important insights into the evolution of single-particle structure in heavy nuclei beyond the proton drip line. The nuclide ^{159}Re was synthesised in the reaction ^{106}Cd(^{58}Ni,p4n) and identified via its proton radioactivity using the RITU gas-filled separator and the GREAT focal-plane spectrometer. Comparisons of the measured proton energy (E_p = 1805±20 keV) and decay half-life (t_{1/2} = 21±4 $\mu$s) with values calculated using the WKB method indicate that the proton is emitted from an h_{11/2} state. The implications of these results for future experimental investigations into even more proton unbound Re isotopes using in-flight separation techniques are c...
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