NSR Query Results

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NSR database version of April 26, 2024.

Search: Author = M.Roosa

Found 5 matches.

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2024LU04      Phys.Rev. C 109, 025801 (2024)

Z.Luo, M.Barbui, J.Bishop, G.Chubarian, V.Z.Goldberg, E.Harris, E.Koshchiy, C.E.Parker, M.Roosa, A.Saastamoinen, D.P.Scriven, G.V.Rogachev

Radiative decay branching ratio of the Hoyle state

doi: 10.1103/PhysRevC.109.025801
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2023BI03      Phys.Rev.Lett. 130, 222501 (2023)

J.Bishop, G.V.Rogachev, S.Ahn, M.Barbui, S.M.Cha, E.Harris, C.Hunt, C.H.Kim, D.Kim, S.H.Kim, E.Koshchiy, Z.Luo, C.Park, C.E.Parker, E.C.Pollacco, B.T.Roeder, M.Roosa, A.Saastamoinen, D.P.Scriven

First Observation of the β3αp Decay of ¹³O via β-Delayed Charged-Particle Spectroscopy

RADIOACTIVITY ¹³O(β⁺p3α) [from ³He(¹⁴N, ¹³O), E=15.1 MeV/nucleon]; measured decay products, Eα, Iα. ¹³N; deduced β-delayed 3αp branching ratio, four previously unknown α-decaying excited states in ¹³N. Comparison with systematics. The K500 Cyclotron at Texas AM University, the Texas Active Target (TexAT) time projection chamber.

doi: 10.1103/PhysRevLett.130.222501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2023HU20      Phys.Rev. C 108, L051606 (2023)

C.Hunt, S.Ahn, J.Bishop, E.Koshchiy, E.Aboud, M.Alcorta, A.Bosh, K.Hahn, S.Han, C.E.Parker, E.C.Pollacco, B.T.Roeder, M.Roosa, S.Upadhyayula, A.S.Volya, G.V.Rogachev

Spectroscopy of ¹³Be through isobaric analog states in ¹³B

doi: 10.1103/PhysRevC.108.L051606
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Data from this article have been entered in the XUNDL database. For more information, click here.

2021SU03      Phys.Rev. C 103, 014322 (2021)

L.J.Sun, M.Friedman, T.Budner, D.Perez-Loureiro, E.Pollacco, C.Wrede, B.A.Brown, M.Cortesi, C.Fry, B.E.Glassman, J.Heideman, M.Janasik, A.Kruskie, A.Magilligan, M.Roosa, J.Stomps, J.Surbrook, P.Tiwari

²⁵Si β⁺-decay spectroscopy

RADIOACTIVITY ²⁵Si(β⁺), (EC), (β⁺p)[from ⁹Be(³⁶Ar, X), E=150 MeV/nucleon from the K500 and K1200 Coupled Cyclotron Facility at NSCL-MSU, followed by purification of ²⁵Si beam by A1900 fragment separator]; measured Eγ, Iγ, γγ- and pγ-coin, E(p), I(p), half-life of ²⁵Si decay using the Gaseous Detector with Germanium Tagging (GADGET) system of a proton detector and the SeGA array. ²⁴Mg, ²⁵Al; deduced levels, J, π, %Iβ⁺ feedings, %I_βp, γ branching ratios, logft, B(GT), Γ_γ/Γ_p and half-life for the 2673-keV level in ²⁵Al, Γ_γ and Γ_γ/Γ_p for T=3/2 IAS in ²⁵Al at 7902 keV. Comparison with shell-model calculations of levels, Jπ, β feedings, logft and B(GT) using USDC and USDI Hamiltonians, and with the experimental and theoretical decay characteristics of ²⁵Na β^- decay to ²⁵Mg. Comparison with earlier experimental results.

doi: 10.1103/PhysRevC.103.014322
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2020FR04      Phys.Rev. C 101, 052802 (2020)

M.Friedman, T.Budner, D.Perez-Loureiro, E.Pollacco, C.Wrede, J.Jose, B.A.Brown, M.Cortesi, C.Fry, B.Glassman, J.Heideman, M.Janasik, M.Roosa, J.Stomps, J.Surbrook, P.Tiwari

Low-energy ²³Al β-delayed proton decay and ²²Na destruction in novae

RADIOACTIVITY ²³Al(β⁺), (β⁺p)[from ⁹Be(³⁶Ar, X), E=150 MeV/nucleon]; measured Ep, Ip, Eγ, Iγ, γp-coin, β-delayed proton branching ratios using the Gaseous Detector with Germanium Tagging (GADGET) detector at the NSCL-MSU facility. Comparison with previous experimental values of β-delayed proton branching ratios.

NUCLEAR REACTIONS ²²Na(p, γ), E(cm)=204 keV; deduced Γ_p/Γ and resonance strength for the 204-keV proton resonance (7.79-MeV, (7/2) state in ²³Mg), and compared with previous experimental values.

doi: 10.1103/PhysRevC.101.052802
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