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NSR database version of April 27, 2024.

Search: Author = P.T.MacGregor

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2022KA36      Phys.Rev.Lett. 129, 152501 (2022)

B.P.Kay, T.L.Tang, I.A.Tolstukhin, G.B.Roderick, A.J.Mitchell, Y.Ayyad, S.A.Bennett, J.Chen, K.A.Chipps, H.L.Crawford, S.J.Freeman, K.Garrett, M.D.Gott, M.R.Hall, C.R.Hoffman, H.Jayatissa, A.O.Macchiavelli, P.T.MacGregor, D.K.Sharp, G.L.Wilson

Quenching of Single-Particle Strength in A = 15 Nuclei

NUCLEAR REACTIONS ²H(¹⁴C, p), (¹⁴N, p), E=10 MeV/nucleon; measured reaction products, Ep, Ip. ¹⁵C, ¹⁵N; deduced σ(θ), Q-value, the difference between the neutron and proton separation energies, degree of quenching. Comparison with the independent single-particle and shell model calculations. The HELIOS spectrometer at the ATLAS facility at Argonne National Laboratory.

doi: 10.1103/PhysRevLett.129.152501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2021KA13      Phys.Rev. C 103, 024319 (2021)

B.P.Kay, J.P.Schiffer, S.J.Freeman, T.L.Tang, B.D.Cropper, T.Faestermann, R.Hertenberger, J.M.Keatings, P.T.MacGregor, J.F.Smith, H.-F.Wirth

Consistency of nucleon-transfer sum rules in well-deformed nuclei

NUCLEAR REACTIONS ^{154,156,157,158}Gd, ^{156,158,160,162,164}Dy, ^{168,170,172,174}Yb, ^{162,164,166,168,170}Er(d, p), (d, t), E=12.1 MeV; analyzed cross section data from neutron-adding and neutron-removing reactions from experiments at Niels Bohr Institute (NBI), and reported in 1966Bu16, 1967Tj01, 1969Tj01 and 1970Gr46, and complemented by new experiments at MLL-Munich; deduced consistent nucleon-transfer sum rules, as defined in Nilsson-model framework, in well-deformed nuclei.

NUCLEAR REACTIONS ¹⁷⁰Er, ¹⁷⁴Yb(d, p), (d, t), E=12 MeV; ¹⁷⁰Er, ¹⁷⁴Yb(p, d), E=18 MeV; measured proton, triton and deuteron spectra, differential σ(θ) using Q3D magnetic spectrometer at the MLL-Munich MP tandem accelerator. ^169,171Er, ^173,175Yb; deduced levels, J, π, Nilsson configurations, sum rules.

doi: 10.1103/PhysRevC.103.024319
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2021MA72      Phys.Rev. C 104, L051301 (2021)

P.T.MacGregor, D.K.Sharp, S.J.Freeman, C.R.Hoffman, B.P.Kay, T.L.Tang, L.P.Gaffney, E.F.Baader, M.J.G.Borge, P.A.Butler, W.N.Catford, B.D.Cropper, G.de Angelis, J.Konki, Th.Kroll, M.Labiche, I.H.Lazarus, R.S.Lubna, I.Martel, D.G.McNeel, R.D.Page, O.Poleshchuk, R.Raabe, F.Recchia, J.Yang

Evolution of single-particle structure near the N=20 island of inversion

NUCLEAR REACTIONS ²H(²⁸Mg, p)²⁹Mg, E=9.47 MeV/nucleon, [secondary ²⁸Mg beam from Si(p, X), E=1.4 GeV, followed resonant ionization by the resonance ionization laser ion source (RILIS), and mass separated and injected into an ion trap at the HIE-ISOLDE-CERN Linac facility]; measured E(p), I(p), σ(θ) using ISOLDE Solenoidal Spectrometer. ²⁹Mg; deduced levels, J, π, L-transfers, spectroscopic factors, vacancies deduced from summed spectroscopic factors, binding energies of single-particle centroids. Comparison with shell-model calculations. Detailed σ(θ) data are tabulated in the Supplemental Material.

doi: 10.1103/PhysRevC.104.L051301
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Data from this article have been entered in the XUNDL database. For more information, click here.

2020TA03      Phys.Rev.Lett. 124, 062502 (2020)

T.L.Tang, B.P.Kay, C.R.Hoffman, J.P.Schiffer, D.K.Sharp, L.P.Gaffney, S.J.Freeman, M.R.Mumpower, A.Arokiaraj, E.F.Baader, P.A.Butler, W.N.Catford, G.de Angelis, F.Flavigny, M.D.Gott, E.T.Gregor, J.Konki, M.Labiche, I.H.Lazarus, P.T.MacGregor, I.Martel, R.D.Page, Zs.Podolyak, O.Poleshchuk, R.Raabe, F.Recchia, J.F.Smith, S.V.Szwec, J.Yang

First Exploration of Neutron Shell Structure below Lead and beyond N=126

NUCLEAR REACTIONS ²H(²⁰⁶Hg, p), E=7.38 MeV/nucleon; measured reaction products, Ep, Ip. ²⁰⁷Hg; deduced excitation energies, J, π, σ(θ). Comparison with theoretical calculations.

doi: 10.1103/physrevlett.124.062502
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2019SH28      Phys.Rev. C 100, 024329 (2019)

D.K.Sharp, S.J.Freeman, B.D.Cropper, P.J.Davies, T.Faestermann, T.M.Hatfield, R.Hertenberger, S.J.F.Hughes, P.T.MacGregor, H.-F.Wirth

Pairing properties of the double-β emitter ¹¹⁶Cd

NUCLEAR REACTIONS ^114,116Cd(p, t), E=22 MeV; measured triton spectra, σ(8° and 15°) using Q3D spectrograph at the MP tandem accelerator facility in Munich. ^112,114Cd; deduced levels, 0+ states from ratios of cross sections at 8° and 15° and DWBA analysis, relative populations. Comparison with previous data for 0+ states in ^116,118Sn from ^114,116Cd(³He, n) reactions. Discussed pairing properties of the 0νββ decay of ¹¹⁶Cd.

doi: 10.1103/PhysRevC.100.024329
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Data from this article have been entered in the XUNDL database. For more information, click here.