Abstract
The structure of the N≃28 45,46 18 Ar 27,28 nuclei has been investigated through in-beam γ-ray spectroscopy using the fragmentation reaction of a 60 A MeV 48Ca beam on a thin Be target. γ-ray energies, intensities, γγ coincidences and γ-ray angular anisotropies have been measured. The level scheme of 45Ar is proposed for the first time, while that of 46Ar has been extended to states above the previously known 2 + first excited state. An isomeric state at 537 keV of 0.34 +0.32 -0.15 ns lifetime has been found in 45Ar from the line-shape analysis of the γ ray connecting the first excited state to the ground state. The experimental results are interpreted using shell-model calculations.
Original language | English |
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Pages | 195-206 |
Number of pages | 12 |
Publication status | Published - 17 Nov 2003 |
Event | Annual Scientific Meeting, European College of Veterinary Surgeons - , United Kingdom of Great Britain and Northern Ireland Duration: 01 Sept 2003 → … |
Conference
Conference | Annual Scientific Meeting, European College of Veterinary Surgeons |
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Country/Territory | United Kingdom of Great Britain and Northern Ireland |
Period | 01 Sept 2003 → … |
Keywords
- Large-scale shell model calculations
- Nuclear reactions Be( Ca, X) Ar/ Ar, E = 60 MeV/nucleon; measured Eγ, Iγ, γγ, (particle)γ-coin, deduced levels, J, π, T
- Spectrometer, Ge and BaF detectors