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Probing the limit of nuclear existence: Proton emission from Re-159
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2006 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 641, no 1, 34-37 p.Article in journal (Refereed) Published
Abstract [en]

The observation of the new nuclide Re-159(75)84 provides important insights into the evolution of single-particle structure and the mass surface in heavy nuclei beyond the proton drip line. This nuclide, 26 neutrons away from the nearest stable rhenium isotope, was synthesised in the reaction Cd-106(Ni-58, 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 nuclei using in-flight separation techniques are considered.

Place, publisher, year, edition, pages
2006. Vol. 641, no 1, 34-37 p.
Keyword [en]
NUCLEAR REACTIONS Ni-58+Cd-106 at 300 MeV beam energy, enriched targets, gas-filled recoil separator, Si detectors, measured E (p), (t)1 / 2
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-37495DOI: 10.1016/j.physletb.2006.08.014ISI: 000240847400007ScopusID: 2-s2.0-33748440787OAI: diva2:434195
QC 20110812Available from: 2011-08-12 Created: 2011-08-12 Last updated: 2011-08-12Bibliographically approved

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Hadinia, Baharak
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