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NSR database version of April 11, 2024.

Search: Author = Z.Meisel

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2024DE04      Phys.Rev.Lett. 132, 062702 (2024)

R.J.deBoer, M.Febbraro, D.W.Bardayan, C.Boomershine, K.Brandenburg, C.Brune, S.Coil, M.Couder, J.Derkin, S.Dede, R.Fang, A.Fritsch, A.Gula, Gy.Gyurky, B.Hackett, G.Hamad, Y.Jones-Alberty, R.Kelmar, K.Manukyan, M.Matney, J.McDonaugh, Z.Meisel, S.Moylan, J.Nattress, D.Odell, P.O'Malley, M.W.Paris, D.Robertson, Shahina, N.Singh, K.Smith, M.S.Smith, E.Stech, W.Tan, M.Wiescher

Measurement of the 13C(α, n0)16O Differential Cross Section from 0.8 to 6.5 MeV

NUCLEAR REACTIONS 13C(α, n), E=0.8-6.5 MeV; measured reaction products, En, IN; deduced σ(θ), σ, S-factor. Comparison with available data, R-matrix results from ENDF/B-VIII.0 library. The Oak Ridge National Laboratory Deuterated Spectroscopic Array (ODeSA), 5 MV Stable ion Accelerator for Nuclear Astrophysics, the University of Notre Dame Nuclear Science Laboratory.

doi: 10.1103/PhysRevLett.132.062702
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2024WA19      Phys.Rev. C 109, 035806 (2024)

K.-L.Wang, A.Estrade, M.Famiano, H.Schatz, M.Barber, T.Baumann, D.Bazin, K.Bhatt, T.Chapman, J.Dopfer, B.Famiano, S.George, M.Giles, T.Ginter, J.Jenkins, S.Jin, L.Klankowski, S.Liddick, Z.Meisel, N.Nepal, J.Pereira, N.Rijal, A.M.Rogers, O.B.Tarasov, G.Zimba

Mass measurements of neutron-rich nuclei near N=70

doi: 10.1103/PhysRevC.109.035806
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2023BR02      Nucl.Sci.Eng. 197, 510 (2023)

K.Brandenburg, G.Hamad, Z.Meisel, C.R.Brune, D.E.Carter, J.Derkin, D.C.Ingram, Y.Jones-Alberty, B.Kenady, T.N.Massey, M.Saxena, D.Soltesz, S.K.Subedi, J.Warren

Measurements of the 27Al(α, n) Thick Target Yield near Threshold

NUCLEAR REACTIONS 27Al(n, α), E=3-5 MeV; measured reaction products, En, In; deduced thick-target-yields. Comparison with available data. The 3HeBF3 Giant Barrel (HeBGB) neutron detector at the Edwards Accelerator Laboratory at Ohio University.

doi: 10.1080/00295639.2022.2118483
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2023BR13      Phys.Rev. C 108, L061601 (2023)

K.Brandenburg, G.Hamad, Z.Meisel, C.R.Brune, D.E.Carter, R.J.deBoer, J.Derkin, C.Feathers, D.C.Ingram, Y.Jones-Alberty, B.Kenady, T.N.Massey, M.Saxena, D.Soltesz, S.K.Subedi, A.V.Voinov, J.Warren, M.Wiescher

Measurements of the 13C(α, n)16O cross section up to Eα=8 MeV

doi: 10.1103/PhysRevC.108.L061601
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2023JA08      Phys.Rev.Lett. 845, 112701 (2023)

H.Jayatissa, M.L.Avila, K.E.Rehm, P.Mohr, Z.Meisel, J.Chen, C.R.Hoffman, J.Liang, C.Muller-Gatermann, D.Neto, W.J.Ong, A.Psaltis, D.Santiago-Gonzalez, T.L.Tang, C.Ugalde, G.Wilson

Study of the 22Mg Waiting Point Relevant for X-Ray Burst Nucleosynthesis via the 22Mg(α, p)25Al Reaction

NUCLEAR REACTIONS 4He(22Mg, p), E=74 MeV; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with calculations. MUlti-Sampling Ionization Chamber (MUSIC) detector, the Argonne Tandem Linac Accelerator System (ATLAS) at Argonne National Laboratory.

doi: 10.1103/PhysRevLett.131.112701
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2023VO08      Phys.Rev. C 108, 034302 (2023)

A.V.Voinov, N.Alanazi, S.Akhtar, S.Dhakal, C.R.Brune, S.M.Grimes, T.N.Massey, Z.Meisel, C.E.Parker, A.L.Richard

Spin cutoff factor and level density for 59Ni from an analysis of compound nuclear reactions

doi: 10.1103/PhysRevC.108.034302
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2023WA10      Phys.Rev.Lett. 130, 192501 (2023)

M.Wang, Y.H.Zhang, X.Zhou, X.H.Zhou, H.S.Xu, M.L.Liu, J.G.Li, Y.F.Niu, W.J.Huang, Q.Yuan, S.Zhang, F.R.Xu, Y.A.Litvinov, K.Blaum, Z.Meisel, R.F.Casten, R.B.Cakirli, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, Y.N.Song, M.Z.Sun, Q.Wang, Y.M.Xing, X.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, M.Zhang

Mass Measurement of Upper fp-Shell N = Z - 2 and N = Z - 1 Nuclei and the Importance of Three-Nucleon Force along the N = Z Line

ATOMIC MASSES 58Zn, 60Ga, 62Ge, 64As, 66Se, 70Kr, 61Ga, 63Ge, 65As, 67Se, 71Kr, 75Sr; measured time-of-flight (TOF); deduced mass excess (ME). A novel method of isochronous mass spectrometry, the Heavy Ion Research Facility in Lanzhou (HIRFL).

doi: 10.1103/PhysRevLett.130.192501
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2023YA31      Phys.Rev. C 108, 065802 (2023)

I.T.Yandow, A.Abdullah-Smoot, G.Bollen, A.Hamaker, C.R.Nicoloff, D.Puentes, M.Redshaw, K.Gulyuz, Z.Meisel, W.-J.Ong, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, A.A.Valverde

Mass measurement of 27P to constrain type-I x-ray burst models and validate the isobaric multiplet mass equation for the A=27, T=3/2 isospin quartet

doi: 10.1103/PhysRevC.108.065802
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2022AL01      J.Phys.(London) G49, 010501 (2022)

M.Aliotta, R.Buompane, M.Couder, A.Couture, R.J.deBoer, A.Formicola, L.Gialanella, J.Glorius, G.Imbriani, M.Junker, C.Langer, A.Lennarz, Y.A.Litvinov, W.-P.Liu, M.Lugaro, C.Matei, Z.Meisel, L.Piersanti, R.Reifarth, D.Robertson, A.Simon, O.Straniero, A.Tumino, M.Wiescher, Y.Xu

The status and future of direct nuclear reaction measurements for stellar burning

NUCLEAR REACTIONS 12C(α, γ), 22Ne(α, n), (α, γ), 12C(12C, X), E(cm)<7 MeV; analyzed available data; deduced σ, S-factors.

doi: 10.1088/1361-6471/ac2b0f
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2022DE30      Phys.Rev. C 106, 055808 (2022)

R.J.deBoer, A.Gula, M.Febbraro, K.Brandenburg, C.R.Brune, J.Gorres, Gy.Gyurky, R.Kelmar, K.Manukyan, Z.Meisel, D.Odell, M.T.Pigni, Shahina, E.Stech, W.Tan, M.Wiescher

First near-threshold measurements of the 13C(α, n1)16O reaction for low-background-environment characterization

NUCLEAR REACTIONS 13C(α, n), E=5.0-5.57 MeV; measured En, In, angular distributions; deduced σ(θ, E) for α, n1 channel. R-matrix analysis with AZURE2 code. Uncertainty estimation with Bayesian R-matrix Inference Code Kit (BRICK). Comparison to the previous estimates of σ for α, ν1a channel, other experimental results for total σ and statistical model calculations. 3He-spectrometer at Stable ion Accelerator for Nuclear Astrophysics (University of Notre Dame).

doi: 10.1103/PhysRevC.106.055808
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2022HA25      Phys.Rev. C 106, 025804 (2022)

G.Hamad, K.Brandenburg, Z.Meisel, C.R.Brune, D.E.Carter, D.C.Ingram, Y.Jones-Alberty, T.N.Massey, M.Saxena, D.Soltesz, S.K.Subedi, A.V.Voinov

Measurements of the 96Zr(α, n)99Mo cross section for astrophysics and applications

doi: 10.1103/PhysRevC.106.025804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2807.


2022LO11      Phys.Lett. B 833, 137361 (2022)

G.Lotay, J.Henderson, W.N.Catford, F.A.Ali, J.Berean, N.Bernier, S.S.Bhattacharjee, M.Bowry, R.Caballero-Folch, B.Davids, T.E.Drake, A.B.Garnsworthy, F.Ghazi Moradi, S.A.Gillespie, B.Greaves, G.Hackman, S.Hallam, D.Hymers, E.Kasanda, D.Levy, B.K.Luna, A.Mathews, Z.Meisel, M.Moukaddam, D.Muecher, B.Olaizola, N.A.Orr, H.P.Patel, M.M.Rajabali, Y.Saito, J.Smallcombe, M.Spencer, C.E.Svensson, K.Whitmore, M.Williams

Single neutron transfer on 23Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts

NUCLEAR REACTIONS 2H(23Ne, p)24Ne, E=8 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced excitation energies, J, π, spectroscopic factors, σ(θ), reduced uncertainties for 23Al + p resonance strengths. Comparison with reaction calculations in the Adiabatic Distorted Wave Approximation (ADWA), using the code TWOFNR. TIGRESS array, the ISAC-II facility at TRIUMF.

doi: 10.1016/j.physletb.2022.137361
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2811. Data from this article have been entered in the XUNDL database. For more information, click here.


2022ME04      Phys.Rev. C 105, 025804 (2022)

Z.Meisel, A.Hamaker, G.Bollen, B.A.Brown, M.Eibach, K.Gulyuz, C.Izzo, C.Langer, F.Montes, W.-J.Ong, D.Puentes, M.Redshaw, R.Ringle, R.Sandler, H.Schatz, S.Schwarz, C.S.Sumithrarachchi, A.A.Valverde, I.T.Yandow

Improved nuclear physics near A=61 refines urca neutrino luminosities in accreted neutron star crusts

ATOMIC MASSES 61Zn; measured time of flight, cyclotron frequency; deduced mass excess. Compared with AME2020 results. Low Energy Beam and Ion Trap (LEBIT) facility at the NSCL.

NUCLEAR REACTIONS 61Zn, 60Cu(p, γ), T=0.10-10 GK; deduced Q from obtained new value for 61Zn atomic mass, astrophysical reaction rates. Computed neutrino luminosity from the mass number A = 61 urca cooling source in accreted neutron-star crusts. Comparison to NON-SMOKER, TALYS codes results.

doi: 10.1103/PhysRevC.105.025804
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2022ON02      Phys.Rev. C 105, 055803 (2022)

W.-J.Ong, M.L.Avila, P.Mohr, K.E.Rehm, D.Santiago-Gonzalez, J.Chen, C.R.Hoffman, Z.Meisel, F.Montes, J.Pereira

Measurement of the 100Mo (α, xn) cross section at weak $r$-process energies

NUCLEAR REACTIONS 4He(100Mo, xn);E(cm)=8.9-13.2 MeV; measured reaction products; deduced σ(E). 4He(100Mo, 2n), E=11.84-13.17; deduced σ(E).Comparison to other experimental data and Hauser-Feschbach calculations. The MUSIC detector at Argonne Tandem Linac Accelerator System (ATLAS) facility.

doi: 10.1103/PhysRevC.105.055803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2768.


2022PU01      Phys.Rev. C 106, L012801 (2022)

D.Puentes, Z.Meisel, G.Bollen, A.Hamaker, C.Langer, E.Leistenschneider, C.Nicoloff, W.-J.Ong, M.Redshaw, R.Ringle, C.S.Sumithrarachchi, J.Surbrook, A.A.Valverde, I.T.Yandow

High-precision mass measurement of 24Si and a refined determination of the rp process at the A=22 waiting point

ATOMIC MASSES 24Si; measured time-of-flight ion Ramsey cyclotron resonance using Low Energy Beam and Ion Trap (LEBIT) facility at NSCL-MSU; deduced precise mass excess of 24Si using and compared with evaluated data in AME2020, effect on the determination of the rp process at 22Mg waiting point. 24Si produced in 9Be(28Si, X), E=160 MeV/nucleon, followed by separation of fragments using A1900 separator, and magnetic dipole mass separator.

NUCLEAR REACTIONS 23Al(p, γ)24Si, T=0.1-1.1 GK; deduced astrophysical reaction rates using resonance levels in 24Si, spectroscopic factors, Γγ and Γp from experimental data and NUSHELLX shell-model calculations. Comparison with literature results for 23Al(p, γ)24Si, 22Mg(p, γ)23Al and 22Mg(α, p)25Al reactions. 22Mg(α, p), T=0.6-1.9 GK; deduced (α, p) flow as function of temperature, onset temperature of the (α, p) process at the 22Mg waiting point to a precision of 9%. Relevance to rp process.

doi: 10.1103/PhysRevC.106.L012801
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2022SA20      Phys.Lett. B 829, 137059 (2022)

M.Saxena, W.-J.Ong, Z.Meisel, D.E.M.Hoff, N.Smirnova, P.C.Bender, S.P.Burcher, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, R.Conaway, P.A.Copp, B.P.Crider, J.Derkin, A.Estrae, G.Hamad, J.T.Harke, R.Jain, H.Jayatissa, S.N.Liddick, B.Longfellow, M.Mogannam, F.Montes, N.Nepal, T.H.Ogunbeku, A.L.Richard, H.Schatz, D.Soltesz, S.K.Subedi, I.Sultana, A.S.Tamashiro, V.Tripathi, Y.Xiao, R.Zink

57Zn β-delayed proton emission establishes the 56Ni rp-process waiting point bypass

RADIOACTIVITY 57Zn(β+p), (β+) [from 9Be(78Kr, X)57Zn, E=150 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ, Ep, Ip; deduced T1/2, βp branching ratio, β-γ-p decay mode transitions. The Coupled Cyclotron Facility of NSCL.

doi: 10.1016/j.physletb.2022.137059
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022SC17      J.Phys.(London) G49, 110502 (2022)

H.Schatz, A.D.Becerril Reyes, A.Best, E.F.Brown, K.Chatziioannou, K.A.Chipps, C.M.Deibel, R.Ezzeddine, D.K.Galloway, C.J.Hansen, F.Herwig, A.P.Ji, M.Lugaro, Z.Meisel, D.Norman, J.S.Read, L.F.Roberts, A.Spyrou, I.Tews, F.X.Timmes, C.Travaglio, N.Vassh, C.Abia, P.Adsley, S.Agarwal, M.Aliotta, W.Aoki, A.Arcones, A.Aryan, A.Bandyopadhyay, A.Banu, D.W.Bardayan, J.Barnes, A.Bauswein, T.C.Beers, J.Bishop, T.Boztepe, B.Cote, M.E.Caplan, A.E.Champagne, J.A.Clark, M.Couder, A.Couture, S.E.de Mink, S.Debnath, R.J.deBoer, J.den Hartogh, P.Denissenkov, V.Dexheimer, I.Dillmann, J.E.Escher, M.A.Famiano, R.Farmer, R.Fisher, C.Frohlich, A.Frebel, C.Fryer, G.Fuller, A.K.Ganguly, S.Ghosh, B.K.Gibson, T.Gorda, K.N.Gourgouliatos, V.Graber, M.Gupta, W.C.Haxton, A.Heger, W.R.Hix, W.C.G.Ho, E.M.Holmbeck, A.A.Hood, S.Huth, G.Imbriani, R.G.Izzard, R.Jain, H.Jayatissa, Z.Johnston, T.Kajino, A.Kankainen, G.G.Kiss, A.Kwiatkowski, M.La Cognata, A.M.Laird, L.Lamia, P.Landry, E.Laplace, K.D.Launey, D.Leahy, G.Leckenby, A.Lennarz, B.Longfellow, A.E.Lovell, W.G.Lynch, S.M.Lyons, K.Maeda, E.Masha, C.Matei, J.Merc, B.Messer, F.Montes, A.Mukherjee, M.R.Mumpower, D.Neto, B.Nevins, W.G.Newton, L.Q.Nguyen, K.Nishikawa, N.Nishimura, F.M.Nunes, E.O'Connor, B.W.O'Shea, W.-J.Ong, S.D.Pain, M.A.Pajkos, M.Pignatari, R.G.Pizzone, V.M.Placco, T.Plewa, B.Pritychenko, A.Psaltis, D.Puentes, Y.-Z.Qian, D.Radice, D.Rapagnani, B.M.Rebeiro, R.Reifarth, A.L.Richard, N.Rijal, I.U.Roederer, J.S.Rojo, J.S K, Y.Saito, A.Schwenk, M.L.Sergi, R.S.Sidhu, A.Simon, T.Sivarani, A.Skuladottir, M.S.Smith, A.Spiridon, T.M.Sprouse, S.Starrfield, A.W.Steiner, F.Strieder, I.Sultana, R.Surman, T.Szucs, A.Tawfik, F.Thielemann, L.Trache, R.Trappitsch, M.B.Tsang, A.Tumino, S.Upadhyayula, J.O.Valle Martinez, M.Van der Swaelmen, C.Viscasillas Vazquez, A.Watts, B.Wehmeyer, M.Wiescher, C.Wrede, J.Yoon, R.G.T.Zegers, M.A.Zermane, M.Zingale, the Horizon 2020 Collaborations

Horizons: nuclear astrophysics in the 2020s and beyond

doi: https://dx.doi.org/10.1088/1361-6471/ac8890
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2022WA34      Phys.Rev. C 106, 044317 (2022)

S.Waniganeththi, D.E.M.Hoff, A.M.Rogers, C.J.Lister, P.C.Bender, K.Brandenburg, K.Childers, J.A.Clark, A.C.Dombos, E.R.Doucet, S.Jin, R.Lewis, S.N.Liddick, Z.Meisel, C.Morse, H.Schatz, K.Schmidt, D.Soltesz, S.K.Subedi

Establishing the ground-state spin of 71Kr

RADIOACTIVITY 71Kr(EC), (β+), (β+p) [from 9Be(92Mo, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 fragment separator and a Radio Frequency Fragment Separator (RFFS) at the NSCL-MSU facility]; measured particle identification plot of implanted ions, Eγ, Iγ, E(p), I(p), (implants)β-coin, (implants)(β-delayed protons)-coin, (implants)γγ-coin, (implants)βγ-coin, T1/2 of decay of 71Kr; deduced absolute number of βγ-coin events, β events, absolute γ intensities, and intensities of β-delayed protons, logft for ground-state to ground-state superallowed β transition using SeGA array with 16 HPGe detectors for γ detection, and double-sided silicon-strip detector (DSSSDs) for particle detection. 71Kr; deduced Jπ and T1/2 of the ground state, decay branching ratios. 70Br; deduced T1/2 of the 0+ g.s. and 9+ isomer. 71Br, 70Se; deduced levels, J, π, β feedings, logft, I(p) feedings. Discussed structure of 71Kr and 71Br mirror nuclei. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.106.044317
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021RA22      Phys.Rev. C 104, L042801 (2021)

J.S.Randhawa, R.Kanungo, J.Refsgaard, P.Mohr, T.Ahn, M.Alcorta, C.Andreoiu, S.S.Bhattacharjee, B.Davids, G.Christian, A.A.Chen, R.Coleman, P.E.Garrett, G.F.Grinyer, E.G.Fuakye, G.Hackman, J.Hollett, R.Jain, K.Kapoor, R.Krucken, A.Laffoley, A.Lennarz, J.Liang, Z.Meisel, B.Nikhil, A.Psaltis, A.Radich, M.Rocchini, N.Saei, M.Saxena, M.Singh, C.Svensson, P.Subramaniam, A.Talebitaher, S.Upadhyayula, C.Waterfield, J.Williams, M.Williams

First direct measurement of 59Cu(p, α)56Ni: step towards constraining the Ni-Cu cycle in the cosmos

NUCLEAR REACTIONS 1H(59Cu, α)56Ni, E=8.5 MeV/nucleon, [secondary 59Cu beam from Nb(p, X), E=480 MeV at the TRIUMF cyclotron, followed by re-acceleration of 59Cu beam by ISAC-II superconducting LINAC, solid H2 target]; measured protons and α particles, angle-integrated σ using thick single-sided silicon strip detectors and a layer of thick CsI(Tl) detectors; deduced ratio of integrated σ to total σ, exclusive population of the ground state of 56Ni in (p, α). Comparison with Hauser-Feshbach based statistical model calculations; deduced overestimation of (p, α) cross section in this region. Discussed impact on νp process and x-ray bursts (XRBs). Relevance to Ni-Cu cycle in nucleosynthesis, with competing 59Cu(p, α)56Ni and 59Cu(p, γ)60Zn reactions.

doi: 10.1103/PhysRevC.104.L042801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2696.


2021SO05      Phys.Rev. C 103, 015802 (2021)

D.Soltesz, M.A.A.Mamun, A.V.Voinov, Z.Meisel, B.A.Brown, C.R.Brune, S.M.Grimes, H.Hadizadeh, M.Hornish, T.N.Massey, J.E.O'Donnell, W.E.Ormand

Determination of the 60Zn level density from neutron evaporation spectra

NUCLEAR REACTIONS 58Ni(3He, n), E=10 MeV; measured E(n), I(n) by time-of-flight method using NE213 liquid organic scintillators at Edwards Accelerator Laboratory; deduced differential σ(En) and for σ(Ep), the latter from experimental data in 2007Vo08, and compared to theoretical calculations using TALYS-V1.8. 60Zn; deduced level density for 60Zn as function of excitation energy up to 10 MeV, and compared to global theoretical models, including phenomenological, microscopic, and shell-model based calculations. Relevance to confirmation of Hauser-Feshbach formalism for 59Cu(p, γ)60Zn reaction rate at x-ray burst temperatures.

doi: 10.1103/PhysRevC.103.015802
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2593.


2021VO11      Phys.Rev. C 104, 015805 (2021)

A.V.Voinov, K.Brandenburg, C.R.Brune, R.Giri, S.M.Grimes, T.Massey, Z.Meisel, S.N.Paneru, A.L.Richard, G.Perdikakis, A.Falduto

Reduction of the neutron imaginary potential off the stability line and its possible impact on neutron capture rates

NUCLEAR REACTIONS 48Ca(11B, X)59Mn*, E=21.8 MeV; measured E(n), I(n), E(p), I(p), Eα, Iα emitted by the compound nucleus 59Mn using ΔE-E Si detector telescope at the Edwards Accelerator Laboratory; analyzed optical model potentials (OMP) with their original parametrizations as well as with adjusted isovector imaginary components using EMPIRE code and BSFG Egidy level-density parametrization; deduced importance of inclusion of isovector component of the imaginary potential; discussed consequences for astrophysical reaction-rate calculations.

doi: 10.1103/PhysRevC.104.015805
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2654.


2020AD16      Phys.Rev. C 102, 015801 (2020)

P.Adsley, A.M.Laird, Z.Meisel

Status of the 24Mg (α, γ)28Si reaction rate at stellar temperatures

NUCLEAR REACTIONS 28Si(α, α'), E*=6-14 MeV; 28Si(p, p'), E=18, 295 MeV; 28Si(e, e'), E*=10-13 MeV; analyzed experimental and evaluated data for levels, resonances, J, π of 28Si. 24Mg(α, γ), T=0.01-1.25 GK; calculated astrophysical reaction rates using RATESMC Monte Carlo code and updated nuclear data for levels in 28Si; discussed effect on x-ray burst light curve. 28Si; analyzed levels, resonances J, π, resonance strengths.

doi: 10.1103/PhysRevC.102.015801
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2020CH35      Phys.Rev. C 102, 035806 (2020)

K.A.Chipps, P.Adsley, M.Couder, W.R.Hix, Z.Meisel, K.Schmidt

Evaluation of experimental constraints on the 44Ti(α, p)47V reaction cross section relevant for supernovae

NUCLEAR REACTIONS 44Ti(α, p)47V, E(cm)=4-11 MeV; calculated σ(E) using TALYS with eight alpha optical models, and compared with experimental data, and other theoretical calculations; deduced χ2 fits. 44Ti(α, p)47V, T9=2.0-10.05; evaluated recommended astrophysical reaction rates based on fits and evaluation of the experimental data and theoretical calculations. Relevance to the understanding of observational 44Ti afterglow in core collapse supernovae.

doi: 10.1103/PhysRevC.102.035806
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2020GA12      Phys.Rev. C 101, 055805 (2020)

P.Gastis, G.Perdikakis, J.Dissanayake, P.Tsintari, I.Sultana, C.R.Brune, T.N.Massey, Z.Meisel, A.V.Voinov, K.Brandenburg, T.Danley, R.Giri, Y.Jones-Alberty, S.Paneru, D.Soltesz, S.Subedi

Constraining the destruction rate of 40K in stellar nucleosynthesis through the study of the 40Ar(p, n)40K reaction

NUCLEAR REACTIONS 40Ar(p, n)40K, E(cm)=3.3-3.9 MeV; measured In, Eγ, Iγ, and differential σ(θ, E) using neutron time-of-flight technique with plastic scintillators for neutron detection and LaBr3 scintillator for γ detection at the Edwards Accelerator Laboratory of Ohio University; deduced total σ(E), and partial σ(E) populating discrete states. 40K(n, p), E(cm)=3.3-3.9 MeV; deduced thermonuclear reaction rates for the forward and reverse reactions. Comparison with Hauser-Feshbach calculations using the statistical model code TALYS, and with theoretical rates in the REACLIB library. Relevance to yield of 40K in nucleosynthesis, and impact on galactic chemical evolution models for the study of properties of exoplanets.

doi: 10.1103/PhysRevC.101.055805
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2020HO06      Nature(London) 580, 52 (2020)

D.E.M.Hoff, A.M.Rogers, S.M.Wang, P.C.Bender, K.Brandenburg, K.Childers, J.A.Clark, A.C.Dombos, E.R.Doucet, S.Jin, R.Lewis, S.N.Liddick, C.J.Lister, Z.Meisel, C.Morse, W.Nazarewicz, H.Schatz, K.Schmidt, D.Soltesz, S.K.Subedi, S.Waniganeththi

Mirror-symmetry violation in bound nuclear ground states

RADIOACTIVITY 73Sr(β+p), (β+), (EC) [from Be(92Mo, X), E=140 MeV/nucleon]; measured decay products, Eβ, Iβ, Ep, Ip; deduced T1/2, γ-ray energies, level scheme, J, π, branching ratios, isobaric-analogue state (IAS), log ft. Comparison with calculations, available data.

doi: 10.1038/s41586-020-2123-1
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2020HO17      Phys.Rev. C 102, 045810 (2020)

D.E.M.Hoff, A.M.Rogers, Z.Meisel, P.C.Bender, K.Brandenburg, K.Childers, J.A.Clark, A.C.Dombos, E.R.Doucet, S.Jin, R.Lewis, S.N.Liddick, C.J.Lister, C.Morse, H.Schatz, K.Schmidt, D.Soltesz, S.K.Subedi, S.M.Wang, S.Waniganeththi

Influence of 73Rb on the ashes of accreting neutron stars

RADIOACTIVITY 73Sr(β+), (β+p)[from 9Be(92Mo, X), E=140 MeV/nucleon, followed by the separation and purification of 73Sr beam by A1900 and radiofrequency fragment separators at NSCL-MSU, and implanted in double-sided silicon strip detector]; measured Ep, Ip. 73Rb; deduced energy of the isobaric analogue state (IAS), J, π, isospin, S(p), β++ϵ feedings and logft for transitions to the 3/2- g.s. and the IAS, influence of 73Rb S(p) on x-ray bursts, and impact on the products of the rp process. Bayesian analysis of beta-delayed proton spectrum.

ATOMIC MASSES 73Rb, 73Sr; analyzed mass excesses by IMME analysis for A=73 isobars of 73Sr, 73Rb, 73Kr and 73Br; deduced mass excesses for 73Rb and 73Sr, and S(p) for 73Rb. Comparison with data in AME2016.

doi: 10.1103/PhysRevC.102.045810
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2020ME06      Phys.Rev. C 101, 052801 (2020)

Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Nuclear mass measurements map the structure of atomic nuclei and accreting neutron stars

ATOMIC MASSES 48,49Ar, 52,53,54,55,56,57Sc, 56,57,58,59Ti, 57,58,59,60,61,62V, 64,65Cr, 67,68Mn, 67,68,69,70Fe; measured time of flight, ΔE, Bπ, and mass excess using the A1900 fragment separator and the S800 spectrograph for particle identification at the NSCL-MSU facility; deduced S(2n), and Dn(Z, A)=S(n)(Z, A+1)-S(n)(Z, A), related to pairing gap. Comparison with available evaluated data in AME2016, and with shell model calculations using GX1A Hamiltonian for Sc isotopes. Discussion of upper-Z limit for N=34 subshell closure and lower-Z limit for N=40 subshell, and impact on electron-capture cooling in neutron star crusts. Isotopes produced in 9Be(82Se, X), E=140 MeV/nucleon reaction.

doi: 10.1103/PhysRevC.101.052801
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2020ON01      Phys.Rev.Lett. 125, 262701 (2020)

W.-J.Ong, E.F.Brown, J.Browne, S.Ahn, K.Childers, B.P.Crider, A.C.Dombos, S.S.Gupta, G.W.Hitt, C.Langer, R.Lewis, S.N.Liddick, S.Lyons, Z.Meisel, P.Moller, F.Montes, F.Naqvi, J.Pereira, C.Prokop, D.Richman, H.Schatz, K.Schmidt, A.Spyrou

β Decay of 61V and its Role in Cooling Accreted Neutron Star Crusts

RADIOACTIVITY 61V(β-), (β-n) [from 9Be(82Se, X), E=140 MeV/nucleon]; measured decay products, Eγ, Iγ, En, In; deduced branching for β-delayed neutron emission, β-feeding intensities, B(GT) strengths, log ft.

doi: 10.1103/PhysRevLett.125.262701
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2020RA24      Phys.Rev.Lett. 125, 202701 (2020)

J.S.Randhawa, Y.Ayyad, W.Mittig, Z.Meisel, T.Ahn, S.Aguilar, H.Alvarez-Pol, D.W.Bardayan, D.Bazin, S.Beceiro Novo, D.Blankstein, L.Carpenter, M.Cortesi, D.Cortina-Gil, P.Gastis, M.Hall, S.Henderson, J.J.Kolata, T.Mijatovic, F.Ndayisabye, P.O'Malley, J.Pereira, A.Pierre, H.Robert, C.Santamaria, H.Schatz, J.Smith, N.Watwood, J.C.Zamora

First Direct Measurement of 22Mg(α, p)25Al and Implications for X-Ray Burst Model-Observation Comparisons

NUCLEAR REACTIONS 4He(22Mg, p), E ∼ 5 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with Non-Smoker calculations, available data.

doi: 10.1103/PhysRevLett.125.202701
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2020SU17      Astrophys.J. 898, 5 (2020)

S.K.Subedi, Z.Meisel, G.Merz

Sensitivity of 44Ti and 56Ni Production in Core-collapse Supernova Shock-driven Nucleosynthesis to Nuclear Reaction Rate Variations

NUCLEAR REACTIONS 13N, 17F, 52Fe, 56Ni(α, p), 57Ni(n, p), 56Co(p, n), 39K, 47V, 52Mn, 57Co(p, γ), 39K(p, α), E not given; calculated reaction rates.

doi: 10.3847/1538-4357/ab9745
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2019LA15      Phys.Rev. C 100, 034614 (2019)

E.Lamere, M.Couder, M.Beard, A.Simon, A.Simonetti, M.Skulski, G.Seymour, P.Huestis, K.Manukyan, Z.Meisel, L.Morales, M.Moran, S.Moylan, C.Seymour, E.Stech

Proton-induced reactions on molybdenum

NUCLEAR REACTIONS 92Mo(p, α)89Nb/89mNb, (p, np)91Mo/91mMo, (p, 2p)91mNb, (p, n)92Tc, (p, γ)93Tc/93mTc, E=10.52, 13.03, 15.07, 16.07, 17.05, 18.07 MeV; 94Mo(p, α)91mNb, (p, np)93mMo, (p, 2n)93Tc/93mTc, (p, n)94Tc/94mTc, E=9.04, 10.06, 11.05, 12.05, 13.04, 14.04, 15.04, 16.06, 17.06, 18.05, 19.06 MeV; 95Mo(p, nα)91mNb, (p, α)92mNb, (p, 2n)94Tc/94mTc, (p, n)95mTc/95mTc, E=10.57, 12.01, 13.02, 4.03, 15.07, 16.03, 17.99, 19.03 MeV; 96Mo(p, nα)92mNb, (p, 2n)95Tc/95mTc, (p, n)96Tc/96mTc, E=8.04, 10.06, 11.07, 11.55, 12.07, 12.55, 13.06, 14.05, 15.05, 16.05, 17.05, 18.05, 19.06 MeV; 97Mo(p, 2n)96Tc/96mTc, (p, n)97mTc, E=9.01, 10.05, 10.98, 11.98, 13.02, 14.02, 15.04 MeV; 98Mo(p, α)95Nb/95mNb, (p, 2n)97mTc, (p, γ)99mTc, E=10.06, 11.06, 12.05, 13.06, 14.05, 15.05, 16.06, 17.06, 18.02, 19.05 MeV; 100Mo(p, nα)96Nb, (p, α)97Nb/97mNb, (p, np)99Mo, (p, 2n)99mTc, (p, γ)101Tc, E=8.01, 9.01, 10.07, 11.01, 12.02, 13.03, 14.03, 15.07, 16.04, 17.03, 18.07, 19.07 MeV; measured Eγ, Iγ, σ(E) by γ-activation method. Comparison with HF calculations using TALYS-1.8 code, and with previous experimental results. Measurement made at the Nuclear Science Laboratory at the University of Notre Dame.

doi: 10.1103/PhysRevC.100.034614
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2019VO05      Phys.Rev. C 99, 054609 (2019)

A.V.Voinov, T.Renstrom, D.L.Bleuel, S.M.Grimes, M.Guttormsen, A.C.Larsen, S.N.Liddick, G.Perdikakis, A.Spyrou, S.Akhtar, N.Alanazi, K.Brandenburg, C.R.Brune, T.W.Danley, S.Dhakal, P.Gastis, R.Giri, T.N.Massey, Z.Meisel, S.Nikas, S.N.Paneru, C.E.Parker, A.L.Richard

Level densities of 74, 76Ge from compound nuclear reactions

NUCLEAR STRUCTURE 68,70Zn(7Li, p), E=16 MeV; measured evaporated proton spectra from 2-25 MeV, σ, yields using silicon ΔE-E telescope at the Edwards tandem accelerator laboratory, Athens, Ohio. 74,76Ge; deduced nuclear level densities. Comparison with theoretical calculations using coupled-channel model of the EMPIRE code, GCM-RIPL-global, and BSFG-RIPL-global density models.

doi: 10.1103/PhysRevC.99.054609
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2019WO01      Phys.Rev.Lett. 122, 232701 (2019)

C.Wolf, C.Langer, F.Montes, J.Pereira, W.-J.Ong, T.Poxon-Pearson, S.Ahn, S.Ayoub, T.Baumann, D.Bazin, P.C.Bender, B.A.Brown, J.Browne, H.Crawford, R.H.Cyburt, E.Deleeuw, B.Elman, S.Fiebiger, A.Gade, P.Gastis, S.Lipschutz, B.Longfellow, Z.Meisel, F.M.Nunes, G.Perdikakis, R.Reifarth, W.A.Richter, H.Schatz, K.Schmidt, J.Schmitt, C.Sullivan, R.Titus, D.Weisshaar, P.J.Woods, J.C.Zamora, R.G.T.Zegers

Constraining the Neutron Star Compactness: Extraction 23Al(p, γ) Reaction Rate for the rp Process

NUCLEAR REACTIONS 2H(23Al, n), E=48 MeV/nucleon; measured reaction products, En, In, Eγ, Iγ; deduced J, π, σ, σ(θ), resonance widths and spectroscopic strengths, reaction rates.

doi: 10.1103/PhysRevLett.122.232701
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2018AB06      Phys.Rev. C 98, 024309 (2018)

E.Aboud, M.B.Bennett, C.Wrede, M.Friedman, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, B.A.Brown, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, E.I.McNeice, Z.Meisel, W.-J.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, H.Schatz, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu

Toward complete spectroscopy using β decay: The example of 32Cl (βγ)32S

RADIOACTIVITY 32Cl(β+), (EC)[from 9Be(36Ar, X), E=150 MeV/nucleon followed by beam separation and purification using A1900 fragment separator and time-of-flight separation method using Radio Frequency Fragment Separator (RFFS) at NSCL-MSU]; measured Eγ, Iγ, βγ- and βγγ-coin using the Clovershare array of HPGe detectors, 32Cl implants and β by a plastic scintillator at NSCL-MSU. 32S; deduced levels, J, π, β feedings, logft, Gamow-Teller strengths, half-lives, proton, γ and α widths of 8861- and 9650-keV resonances. Comparison with sd USDA and USDB shell model calculations, and with previous experimental values and ENSDF evaluations. 31P(p, α)28Si, E=9650 keV; deduced resonance strength.

doi: 10.1103/PhysRevC.98.024309
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2018BE12      Phys.Rev. C 97, 065803 (2018)

M.B.Bennett, C.Wrede, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, B.A.Brown, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, N.R.Larson, E.I.McNeice, Z.Meisel, W.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, H.Schatz, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu

Detailed study of the decay 31Cl(βγ)31S

RADIOACTIVITY 31Cl(β+), (EC)[from 9Be(36Ar, X), E=150 MeV/nucleon using A1900 Fragment Separator for Bρ, and Radio Frequency Fragment Separator (RFFS) for TOF at NSCL-MSU facility]; measured Eγ, Iγ, βγ- and βγγ-coin using Yale Clovershare array for γ detection, and plastic scintillator for β detection. 31S; deduced levels, resonances, J, π, β feedings, logft values, isospin mixing, ratio of thermonuclear reaction rates for 30P(p, γ)31S reaction at T9=0.1-0.4 for the newly discovered state at 6390 keV and the IAS at 6280 keV. Comparison with USDB and USDE shell-model calculations, and previous experimental results.

doi: 10.1103/PhysRevC.97.065803
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2018ME05      J.Phys.(London) G45, 093001 (2018)

Z.Meisel, A.Deibel, L.Keek, P.Shternin, J.Elfritz

Nuclear physics of the outer layers of accreting neutron stars

doi: 10.1088/1361-6471/aad171
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2017KA25      Phys.Lett. B 769, 549 (2017)

A.Kankainen, P.J.Woods, H.Schatz, T.Poxon-Pearson, D.T.Doherty, V.Bader, T.Baugher, D.Bazin, B.A.Brown, J.Browne, A.Estrade, A.Gade, J.Jose, A.Kontos, C.Langer, G.Lotay, Z.Meisel, F.Montes, S.Noji, F.Nunes, G.Perdikakis, J.Pereira, F.Recchia, T.Redpath, R.Stroberg, M.Scott, D.Seweryniak, J.Stevens, D.Weisshaar, K.Wimmer, R.Zegers

Measurement of key resonance states for the 30P(p, γ)31S reaction rate, and the production of intermediate-mass elements in nova explosions

NUCLEAR REACTIONS 2H(30P, n)31S, E=30 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, σ, negative-parity states, spectroscopic factors, resonance parameters, astrophysical reaction rates. The GRETINA (Gamma-Ray Energy Tracking In-beam Nuclear Array), the National Superconducting Cyclotron Laboratory, Michigan State University.

doi: 10.1016/j.physletb.2017.01.084
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2017ME01      Nucl.Instrum.Methods Phys.Res. A844, 45 (2017)

Z.Meisel, M.del Santo, H.L.Crawford, R.H.Cyburt, G.F.Grinyer, C.Langer, F.Montes, H.Schatz, K.Smith

β-particle energy-summing correction for β-delayed proton emission measurements

RADIOACTIVITY 67Se, 20Mg, 23Si, 69Kr(β+p); analyzed available data; calculated β-summing in the measurement of proton-decay energies of β-delayed proton-emitting nuclei detected via implantation.

doi: 10.1016/j.nima.2016.11.019
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2017ON01      Phys.Rev. C 95, 055806 (2017)

W.-J.Ong, C.Langer, F.Montes, A.Aprahamian, D.W.Bardayan, D.Bazin, B.A.Brown, J.Browne, H.Crawford, R.Cyburt, E.B.Deleeuw, C.Domingo-Pardo, A.Gade, S.George, P.Hosmer, L.Keek, A.Kontos, I.-Y.Lee, A.Lemasson, E.Lunderberg, Y.Maeda, M.Matos, Z.Meisel, S.Noji, F.M.Nunes, A.Nystrom, G.Perdikakis, J.Pereira, S.J.Quinn, F.Recchia, H.Schatz, M.Scott, K.Siegl, A.Simon, M.Smith, A.Spyrou, J.Stevens, S.R.Stroberg, D.Weisshaar, J.Wheeler, K.Wimmer, R.G.T.Zegers

Low-lying level structure of 56Cu and its implications for the rp process

NUCLEAR REACTIONS 2H(56Ni, 56Cu), E AP 75 MeV/nucleon, [secondary 56Ni beam from 9Be(58Ni, X), E=160 MeV/nucleon primary reaction using A1900 separator at NSCL-MSU facility]; measured ΔE-TOF particle identification for ions, Eγ, Iγ, γγ-, (56Cu ions)γ-coin using GRETINA array and S800 magnetic spectrograph. 56Cu; deduced levels, J, π. Comparison with mirror nucleus 56Co level scheme, and with shell-model calculations 55Ni(p, γ)56Cu, T9=0.1-10; deduced Q value, astrophysical reaction rates as function of temperature, and impact on the r-process around 56Ni.

NUCLEAR STRUCTURE 56Cu; calculated levels, resonance energies, J, π, spectroscopic factors, Γp, Γγ using shell model with the GXPF1A interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.055806
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2016BE05      Phys.Rev.Lett. 116, 102502 (2016)

M.B.Bennett, C.Wrede, B.A.Brown, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, N.R.Larson, E.I.McNeice, Z.Meisel, W.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, H.Schatz, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu

Isospin Mixing Reveals 30P(p, γ)31S Resonance Influencing Nova Nucleosynthesis

RADIOACTIVITY 31Cl(EC), (β+) [from Be(36Ar, X)31Cl, E=150 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ, β-γ-coin.; deduced energy levels and intensities, J, π, resonance parameters. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.116.102502
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2016BE19      Phys.Rev. C 93, 064310 (2016)

M.B.Bennett, C.Wrede, B.A.Brown, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, N.R.Larson, E.I.McNeice, Z.Meisel, W.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu

Isobaric multiplet mass equation in the A = 31, T = 3/2 quartets

RADIOACTIVITY 31Cl(β+); measured Eγ, Iγ, Eβ, βγ-, βγγ-coin using the Clovershare array at NSCL-MSU laboratory. 31S; deduced levels, IAS, isospin mixing, β feedings, isospin T=3/2 states. 31Cl; discussed predictions for the first excited state. Comparison with USDB and USDE shell-model calculations.

ATOMIC MASSES 31Cl, 31S, 31P, 31Si; analyzed isobaric multiplet mass equation (IMME) for T=3/2 quartet by quadratic and cubic fits. Discussed IMME breakdown and isospin mixing. Comparison with USDB and USDE shell-model calculations.

doi: 10.1103/PhysRevC.93.064310
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2016KA05      Eur.Phys.J. A 52, 6 (2016)

A.Kankainen, P.J.Woods, F.Nunes, C.Langer, H.Schatz, V.Bader, T.Baugher, D.Bazin, B.A.Brown, J.Browne, D.T.Doherty, A.Estrade, A.Gade, A.Kontos, G.Lotay, Z.Meisel, F.Montes, S.Noji, G.Perdikakis, J.Pereira, F.Recchia, T.Redpath, R.Stroberg, M.Scott, D.Seweryniak, J.Stevens, D.Weisshaar, K.Wimmer, R.Zegers

Angle-integrated measurements of the 26Al (d, n) 27Si reaction cross section: a probe of spectroscopic factors and astrophysical resonance strengths

NUCLEAR REACTIONS 2H(26Al, n), E=30 MeV/nucleon; measured 511 keV γ-ray using GRETINA (Gamma-Ray Energy Tracking In-beam Nuclear Array), Si recoils, (Si)γ-coin; deduced Doppler-reconstructed γ-ray spectrum in coincidence with Si, σ, resonances, spectroscopic factors to discrete states; calculated σ using shell model.

doi: 10.1140/epja/i2016-16006-5
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2016ME07      Phys.Rev. C 93, 035805 (2016)

Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Sieja, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Time-of-flight mass measurements of neutron-rich chromium isotopes up to N=40 and implications for the accreted neutron star crust

ATOMIC MASSES 59,60,61,62,63,64Cr; measured mass excesses by time-of-flight (TOF) method using 9Be(82Se, X), E=140 MeV/nucleon for production of Si to Zn isotopes and A1900 fragment separator and S800 spectrograph for fragment separation and analysis at NSCL-MSU. TOF versus mass contour plot obtained for Ar (A=44-49), K (A=47-52), Ca (A=49-55), Sc (A=52-58), Ti (A=54-60), V (A=57-63), Cr (A=59-66), Mn (A=62-70) and Fe (A=64-71) isotopes. Analyzed S(2n) trends and compared to AME-2012. Comparison with state-of-the-art shell-model calculations using modified Lenzi-Nowacki-Poves-Sieja interaction in the fp shell, and with AME-2012 data. Mass of 64Cr used in accreted neutron star crust network calculations, and deduced reduction in strength depth of electron-capture heating from A=64 isobaric chain.

NUCLEAR REACTIONS 9Be(82Se, X), E=140 MeV/nucleon; measured time-of-flight, energy loss, fragment yields of 150 isotopes from Si to Zn using A1900 fragment separator and S800 spectrograph at NSCL-MSU.

doi: 10.1103/PhysRevC.93.035805
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2015ME01      Phys.Rev.Lett. 114, 022501 (2015)

Z.Meisel, S.George, S.Ahn, J.Browne, D.Bazin, B.A.Brown, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Mass Measurements Demonstrate a Strong N=28 Shell Gap in Argon

ATOMIC MASSES 48,49Ar; measured time of flight; deduced masses, N=28 closed shell, problems of shell model calculations.

doi: 10.1103/PhysRevLett.114.022501
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2015ME08      Phys.Rev.Lett. 115, 162501 (2015)

Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, A.L.Cole, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Mass Measurement of 56Sc Reveals a Small A=56 Odd-Even Mass Staggering, Implying a Cooler Accreted Neutron Star Crust

ATOMIC MASSES 52,53,54,55,56,57Sc; measured rigidity-corrected time-of-flight distributions; deduced atomic mass excesses. Comparison with AME 2012, theoretical models.

doi: 10.1103/PhysRevLett.115.162501
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2015NO04      Phys.Rev. C 92, 024312 (2015)

S.Noji, R.G.T.Zegers, SamM.Austin, T.Baugher, D.Bazin, B.A.Brown, C.M.Campbell, A.L.Cole, H.J.Doster, A.Gade, C.J.Guess, S.Gupta, G.W.Hitt, C.Langer, S.Lipschutz, E.Lunderberg, R.Meharchand, Z.Meisel, G.Perdikakis, J.Pereira, F.Recchia, H.Schatz, M.Scott, S.R.Stroberg, C.Sullivan, L.Valdez, C.Walz, D.Weisshaar, S.J.Williams, K.Wimmer

Gamow-Teller transitions to 45Ca via the 45Sc (t, 3He+γ) reaction at 115 MeV/u and its application to stellar electron-capture rates

NUCLEAR REACTIONS 45Sc(t, 3He), E=115 MeV/nucleon, [triton beam from 9Be(16O, X), E=150 MeV/nucleon reaction]; measured 3He spectra, double-differential σ(θ), Eγ, Iγ, (particle)γ-coin using S800 spectrometer, cathode-readout drift chambers (CRDCs) and Gretina array at NSCL-MSU Coupled-Cyclotron facility. 45Ca; deduced levels, J, π, B(GT) strength functions, electron capture rates on 45Ca as function of stellar temperatures T9=8.5-10.5, poor agreement with shell-model calculations in the pf space and using GXPF1A, KB3G, and FPD6 interactions. Comparison of B(GT) with that from 45Ca g.s. to 45Sc g.s. β transition.

doi: 10.1103/PhysRevC.92.024312
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2179. Data from this article have been entered in the XUNDL database. For more information, click here.


2014DE41      Phys.Lett. B 738, 453 (2014)

M.Del Santo, Z.Meisel, D.Bazin, A.Becerril, B.A.Brown, H.Crawford, R.Cyburt, S.George, G.F.Grinyer, G.Lorusso, P.F.Mantica, F.Montes, J.Pereira, H.Schatz, K.Smith, M.Wiescher

β-delayed proton emission of 69Kr and the 68Se rp-process waiting point

RADIOACTIVITY 69Kr(β+p) [from Be(78Kr, X)69Kr, E not given]; measured reaction products, Ep, Ip, Eβ, Iβ, Eγ, Iγ. 69Br; deduced T1/2, proton separation energy, proton emission decay scheme, γ-ray energies. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2014.10.023
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2014LA16      Phys.Rev.Lett. 113, 032502 (2014)

C.Langer, F.Montes, A.Aprahamian, D.W.Bardayan, D.Bazin, B.A.Brown, J.Browne, H.Crawford, R.H.Cyburt, C.Domingo-Pardo, A.Gade, S.George, P.Hosmer, L.Keek, A.Kontos, I-Y.Lee, A.Lemasson, E.Lunderberg, Y.Maeda, M.Matos, Z.Meisel, S.Noji, F.M.Nunes, A.Nystrom, G.Perdikakis, J.Pereira, S.J.Quinn, F.Recchia, H.Schatz, M.Scott, K.Siegl, A.Simon, M.Smith, A.Spyrou, J.Stevens, S.R.Stroberg, D.Weisshaar, J.Wheeler, K.Wimmer, R.G.T.Zegers

Determining the rp-Process Flow through 56Ni: Resonances in 57Cu(p, γ)58Zn identified with GRETINA

NUCLEAR REACTIONS 2H(57Cu, n), E=75 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced resonance energies, J, π, reaction rates. Shell model calculations, GXPF1A interaction.

doi: 10.1103/PhysRevLett.113.032502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014NO05      Phys.Rev.Lett. 112, 252501 (2014)

S.Noji, R.G.T.Zegers, S.M.Austin, T.Baugher, D.Bazin, B.A.Brown, C.M.Campbell, A.L.Cole, H.J.Doster, A.Gade, C.J.Guess, S.Gupta, G.W.Hitt, C.Langer, S.Lipschutz, E.Lunderberg, R.Meharchand, Z.Meisel, G.Perdikakis, J.Pereira, F.Recchia, H.Schatz, M.Scott, S.R.Stroberg, C.Sullivan, L.Valdez, C.Walz, D.Weisshaar, S.Williams, K.Wimmer

β+ Gamow-Teller Transition Strengths from 46Ti and Stellar Electron-Capture Rates

RADIOACTIVITY 46Ti(β+), (EC) [from 46Ti(t, 3He), E=115 MeV/nucleon]; measured reaction and decay products, Eγ, Iγ; deduced σ(θ, E), Gamow-Teller transition strength, energy levels, J, π, electron capture decay rates. Comparison with shell model calculations using GXPF1A, KB3G, FPD6 interactions, QRPA calculations.

doi: 10.1103/PhysRevLett.112.252501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2120. Data from this article have been entered in the XUNDL database. For more information, click here.


2010CY01      Astrophys.J.Suppl.Ser. 189, 240 (2010)

R.H.Cyburt, A.M.Amthor, R.Ferguson, Z.Meisel, K.Smith, S.Warren, A.Heger, R.D.Hoffman, T.Rauscher, A.Sakharuk, H.Schatz, F.K.Thielemann, M.Wiescher

The JINA REACLIB Database: Its Recent Updates and Impact on Type-I X-ray Bursts

doi: 10.1088/0067-0049/189/1/240
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