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NSR database version of April 27, 2024.

Search: Author = M.Omer

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2024SH01      Phys.Rev. C 109, 014302 (2024)

T.Shizuma, M.Omer, T.Hayakawa, F.Minato, S.Matsuba, S.Miyamoto, N.Shimizu, Y.Utsuno

Parity assignment for low-lying dipole states in ⁵⁸Ni

doi: 10.1103/PhysRevC.109.014302
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2021SH08      Phys.Rev. C 103, 024309 (2021)

T.Shizuma, F.Minato, M.Omer, T.Hayakawa, H.Ohgaki, S.Miyamoto

Low-lying electric and magnetic dipole strengths in ²⁰⁷Pb

NUCLEAR REACTIONS ²⁰⁷Pb(polarized γ, γ'), E(maximum)=5.8, 6.3, 6.8 MeV quasimonochromatic photon beam generated by laser Compton scattering (LCS) with relativistic electrons circulating in the NewSUBARU storage ring; measured Eγ, Iγ at azimuthal angles of 0° and 90° relative to the polarization plane, azimuthal intensity ratios using two HPGe detectors at the LASTI of the University of Hyogo. ²⁰⁷Pb; deduced levels, J, π, branching ratios Γ₀/Γ, integrated scattering cross sections, gΓ₀²/Γ, B(E1)(up), B(M1)(up), E1 and M1 photoabsorption cross sections, coherent excitations of spin-flip 1p-1h states in the ²⁰⁶Pb core. Nuclear resonance fluorescence (NRF) study. Comparison with particle-vibration coupling (PVC), with the quasiparticle random-phase approximation (QRPA) calculations using SkM*, SGII, and SkP interactions, and with previous experimental results.

doi: 10.1103/PhysRevC.103.024309
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2688. Data from this article have been entered in the XUNDL database. For more information, click here.

2019SH26      Phys.Rev. C 100, 014307 (2019)

T.Shizuma, M.Omer, R.Hajima, N.Shimizu, Y.Utsuno

Spin and parity determination of the 3.004-MeV level in ²⁷Al: Its low-lying multiplet structure

NUCLEAR REACTIONS ²⁷Al(polarized γ, γ'), E=2900-3100 quasimonochromatic, linearly polarized photon beam from the TUNL High Intensity γ-ray Source (HIγS); measured Eγ, Iγ, azimuthal asymmetry and γ-ray angular distributions. ²⁷Al; deduced levels, J and π of 2.982- and 3.004-MeV levels, multipolarity and mixing ratio of γ transition, Γ₀, integrated cross section, and B(E2) for 3.004-MeV level. Comparisons with Monte-Carlo shell model calculations, and with previous measurements.

doi: 10.1103/PhysRevC.100.014307
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Data from this article have been entered in the XUNDL database. For more information, click here.