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May 13 – 17, 2019
Venice, Centro Culturale Don Orione Artigianelli
Europe/Rome timezone
NSD2019 Proceedings are now available online at www.epj-conferences.org

Lifetime Measurements of Excited States in 146Sm.

Not scheduled
15m
SALA PALLADIO (Centro Culturale Don Orione Artigianelli)

SALA PALLADIO

Centro Culturale Don Orione Artigianelli

Speaker

Dr Thamer Alharbi (1Department of Physics, College of Science in Zulfi, Majmaah University, 11932, Saudi Arabia)

Description

This work reports on the utilisation of gamma-ray coincidences between germanium and
cerium-doped lanthanum tri-bromide LaBr3:(Ce) scintillation detectors for the determination
of electromagnetic transition rates in the pico to nanosecond regime. The technique utilises
the high-quality full-energy peak resolution of the LaBr3(Ce) detectors coupled with their
excellent timing responses in order to study discrete energy gamma-ray cascades from
nuclei populated using the 139La(11B, 4n)146Sm fusion-evaporation reaction. This study was
carried out at the Tandem van de Graaff accelerator laboratory in Bucharest, Romania [2].
The emitted gamma rays were detected using the mixed ROSPHERE array of LaBr3:(Ce)
and HPGe detectors. Lifetimes of excited states in the 146Sm will be presented, together with
their interpretation within the nuclear shell model configurations of near-yrast excitations in
146Sm.
[1] J.-M.Regis et al., Nucl. Inst. Meth. Phys. Res. A 622 (2010) 83-92.
[2] N. Mărginean, et al Eur. Phys. J. A 46, 329–336 (2010).

Primary authors

Dr Thamer Alharbi (1Department of Physics, College of Science in Zulfi, Majmaah University, 11932, Saudi Arabia) Prof. Patrick Regan (Department of Physics, University of Surrey, Guildford, GU2 7XH) Prof. Zsolt Podolyak (Department of Physics, University of Surrey, Guildford, GU2 7XH) Prof. Alison Bruce (School of Engineering and Technology, University of Brighton, Brighton, BN2 4GJ, UK) Dr Oliver Roberts (School of Engineering and Technology, University of Brighton, Brighton, BN2 4GJ, UK) Dr C. Nobes (School of Engineering and Technology, University of Brighton, Brighton, BN2 4GJ, UK) Prof. J.F. Smith (School of Engineering, University of the West of Scotland, High Street, Paisley PA1 2BE, UK) Dr K. Mulholland (School of Engineering, University of the West of Scotland, High Street, Paisley PA1 2BE, UK) Dr M. Smolen (School of Engineering, University of the West of Scotland, High Street, Paisley PA1 2BE, UK) Dr E. Parr (School of Engineering, University of the West of Scotland, High Street, Paisley PA1 2BE, UK) Mr J. Wiederhold (Technische University Darmstadt, D-64289 Darmstadt, Germany) Dr T. Daniel (Department of Physics, University of Surrey, Guildford, GU2 7XH) Dr C. R. Nita (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Prof. N. Marginean (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr D. Filipescu (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr T. Glodariu (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr C. Mihai (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr A. Negret (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr T. Sava (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr R. Marginean (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr D. Ghita (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr D. Deleanu (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Prof. D. Bucurescu (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania) Dr L. Stroe (Horia Hulubei - National Institute for Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania)

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