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NSR database version of April 27, 2024.

Search: Author = M.E.Bennett

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2018ES07      J.Radioanal.Nucl.Chem. 318, 515 (2018)

R.M.Essex, J.L.Mann, R.Colle, L.Laureano-Perez, M.E.Bennett, H.Dion, R.Fitzgerald, A.M.Gaffney, A.Gourgiotis, A.Hubert, K.G.W.Inn, W.S.Kinman, S.P.Lamont, R.Steiner, R.W.Williams

New determination of the ²²⁹Th half-life

RADIOACTIVITY ²²⁹Th(α); measured decay products, Eγ, Iγ, Eβ, Iβ, Eα, Iα; deduced T_1/2. Comparison with available data and calculations.

doi: 10.1007/s10967-018-6032-9
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015MA63      Phys.Rev. C 92, 054601 (2015)

D.A.Mayorov, T.A.Werke, M.C.Alfonso, E.E.Tereshatov, M.E.Bennett, M.M.Frey, C.M.Folden

Evaporation residue excitation function measurements in ⁵⁰Ti- and ⁵⁴Cr-induced reactions with lanthanide targets

NUCLEAR REACTIONS ¹⁶⁰Gd, ¹⁵⁹Tb, ¹⁶²Dy(⁵⁰Ti, 3n), (⁵⁰Ti, 4n), (⁵⁰Ti, 5n), ¹⁵⁹Tb, ¹⁶²Dy(⁵⁰Ti, 2np), (⁵⁰Ti, 3np), ¹⁵⁹Tb(⁵⁰Ti, 4np), E=4.9 MeV/nucleon; ¹⁶²Dy(⁵⁴Cr, 4n), (⁵⁴Cr, 5n), (⁵⁴Cr, 2np), (⁵⁴Cr, 3np), 5.1 MeV/nucleon; measured reaction products, Eα and half-lives of the radioactive isotopes produced, σ(E) of evaporation residues (ER), (ER)αα-correlations, using MARS spectrometer at Texas A and M cyclotron facility. Enriched targets. ¹⁵⁹Tb, ¹⁶²Dy(⁴⁸Ca, 3n), ¹⁵⁴Gd, ¹⁵⁹Tb, ¹⁶²Dy, ¹⁶⁵Ho(⁴⁸Ca, 4n), (⁴⁸Ca, 5n), ¹⁷⁶Hf(⁴⁰Ar, 4n), (⁴⁰Ar, 5n), ¹²⁴Sn(⁹²Zr, 4n), (⁹²Zr, 5n), E(*)=35-60 MeV; analyzed σ(E). Statistical model analysis, and comparison with predictions of Bohr-Wheeler transition-state theory. Discussed effect of collective enhancement of level density (CELD).

RADIOACTIVITY ^204,205,206Rn, ^{204,205,206,208,209}Fr, ^208,209Ra(α)[from ¹⁶⁰Gd, ¹⁵⁹Tb, ¹⁶²Dy(⁵⁰Ti, X), E=4.9 MeV/nucleon; ^212,213Ac(α)[from ¹⁶²Dy(⁵⁴Cr, X), E=5.1 MeV/nucleon]; measured Eα, half-lives of ²⁰⁵Fr and ²⁰⁸Ra decays.

doi: 10.1103/PhysRevC.92.054601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2203. Data from this article have been entered in the XUNDL database. For more information, click here.

2015WE13      Phys.Rev. C 92, 034613 (2015)

T.A.Werke, D.A.Mayorov, M.C.Alfonso, M.E.Bennett, M.J.DeVanzo, M.M.Frey, E.E.Tereshatov, C.M.Folden

Hot fusion-evaporation cross sections of ⁴⁵Sc-induced reactions with lanthanide targets

NUCLEAR REACTIONS ^{156,157,158,160}Gd, ¹⁵⁹Tb, ¹⁶²Dy(⁴⁵Sc, 3n), (⁴⁵Sc, 4n), (⁴⁵Sc, 5n), (⁴⁵Sc, 6n), (⁴⁵Sc, 2np), (⁴⁵Sc, 3np), ¹⁶²Dy(⁴⁵Sc, α), (⁴⁵Sc, nα), (⁴⁵Sc, 2nα), E≈5 MeV/nucleon; measured reaction products, Eα from decay products, evaporation residue cross sections σ(E) for 3n-, 4n-, 5n-, 6n-, p2n-, p3n-, p4n-, p5n-channels and α-, αn, α2n-channels for ¹⁶²Dy using Momentum Achromat Recoil Spectrometer (MARS) at Texas A and M; deduced influence of collective enhancements to level density (CELD). Comparison with theoretical model for the fusion-evaporation process. Relevance to production of SHE region nuclei.

RADIOACTIVITY ^{197,198,199,200m,201}At, ^{197,198,199,201m}Po, ^200,203mRn, ²⁰³Fr(α)[from ^{156,157,158,160}Gd, ¹⁵⁹Tb, ¹⁶²Dy(⁴⁵Sc, 4n), (⁴⁵Sc, 3np), E≈5 MeV/nucleon]; measured Eα. Comparison with previously measured values.

doi: 10.1103/PhysRevC.92.034613
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2193.

2014MA66      Phys.Rev. C 90, 024602 (2014)

D.A.Mayorov, T.A.Werke, M.C.Alfonso, M.E.Bennett, C.M.Folden

Production cross sections of elements near the N=126 shell in ⁴⁸Ca-induced reactions with ¹⁵⁴Gd, ¹⁵⁹Tb, ¹⁶²Dy, and ¹⁶⁵Ho targets

NUCLEAR REACTIONS ¹⁵⁴Gd(⁴⁸Ca, 3n)^199mPo, ¹⁵⁴Gd(⁴⁸Ca, 4n)¹⁹⁸Po, ¹⁵⁴Gd(⁴⁸Ca, 5n)^197mPo, ¹⁵⁹Tb(⁴⁸Ca, 3n)²⁰⁴At, (⁴⁸Ca, 4n)²⁰³At, (⁴⁸Ca, 5n)²⁰²At, (⁴⁸Ca, 6n)²⁰¹At, ¹⁶²Dy(⁴⁸Ca, 3n)²⁰⁷Rn, (⁴⁸Ca, xn)²⁰⁶Rn/²⁰⁵Rn, (⁴⁸Ca, 6n)²⁰⁴Rn, ¹⁶⁵Ho(⁴⁸Ca, 3n)²¹⁰Fr, (⁴⁸Ca, xn)²⁰⁹Fr/²⁰⁸Fr, (⁴⁸Ca, 6n)²⁰⁷Fr, E=180-210 MeV; measured reaction products, α spectra from residues, evaporation residue σ(E) using MARS spectrometer at Texas A-M cyclotron facility; deduced signature of collective effects. Comparison with theoretical σ(E), calculated with and without the inclusion of collective enhancement of level density. Discussed implications for production of superheavy elements.

RADIOACTIVITY ^198,199mPo, ^203,204At, ^206,207Rn, ^209,210Fr(α)[from ¹⁵⁴Gd, ¹⁵⁹Tb, ¹⁶²Dy, ¹⁶⁵Ho(⁴⁸Ca, xn), E=180-210 meV]; measured Eα, compared with previous experimental values.

doi: 10.1103/PhysRevC.90.024602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2127.

2012BE07      Nucl.Instrum.Methods Phys.Res. B276, 62 (2012)

M.E.Bennett, D.A.Mayorov, K.D.Chapkin, M.C.Alfonso, T.A.Werke, C.M.Folden III

Measurement of the ^natLu(p, x)¹⁷⁵Hf excitation function

NUCLEAR REACTIONS Lu(p, X)¹⁷⁵Hf, E=5.2-16.7 MeV; Ti(p, X)⁴⁸V, E=6.9-16 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with available data.

doi: 10.1016/j.nimb.2012.01.039
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1909.

2011HA63      J.Phys.:Conf.Ser. 312, 082026 (2011)

J.H.Hamilton, Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.Benker, M.E.Bennett, S.N.Dmitriev, J.Ezold, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, Tu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk

Synthesis of the New Element with Z=117

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 4n)²⁹³Ts, E=252 MeV;²⁴⁹Bk(⁴⁸Ca, 3n)²⁹⁴Ts, E=252 MeV; measured Eα, α-decay chains, ER, fission fragments; deduced new element 117, T_1/2.

doi: 10.1088/1742-6596/312/4/082026
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2011OG04      Phys.Rev. C 83, 054315 (2011)

Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.E.Benker, M.E.Bennett, S.N.Dmitriev, J.G.Ezold, J.H.Hamilton, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.D.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, R.Taylor, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk

Eleven new heaviest isotopes of elements Z = 105 to Z = 117 identified among the products of ²⁴⁹Bk+⁴⁸Ca reactions

RADIOACTIVITY ^293,294Ts(α)[from ²⁴⁹Bk(⁴⁸Ca, xn), E=252 MeV]; ²⁷⁴Bh, ²⁷⁸Mt, ²⁸²Rg, ²⁸⁶Nh, ²⁹⁰Mc(α) [from α decay chain of ²⁹⁴Ts]; ²⁸¹Rg, ²⁸⁵Nh, ²⁸⁹Mc(α)[from α decay chain of ²⁹³Ts]; ²⁷⁰Db(SF), (α), (EC)[from α decay of ²⁷⁴Bh]; ²⁸¹Rg(SF)[from α decay of ²⁸⁵Nh]; measured Eα, half-lives and β decay energies of residues; deduced Q(α). Systematics of α decay half-lives, Q(α) values and β⁺, EC half-lives of Z=106-118, N=150-175, A=260-295 isotopes.

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, xn)²⁹³Ts/²⁹⁴Ts, E=252 MeV; measured production cross sections.

doi: 10.1103/PhysRevC.83.054315
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0884. Data from this article have been entered in the XUNDL database. For more information, click here.

2010BE40      J.Phys.:Conf.Ser. 202, 012023 (2010)

M.E.Bennett, R.Hirschi, M.Pignatari, S.Diehl, C.Fryer, F.Herwig, A.Hungerford, G.Magkotsios, G.Rockefeller, F.Timmes, M.Wiescher, P.Young

The effect of ¹²C + ¹²C rate uncertainties on s-process yields

NUCLEAR REACTIONS ¹²C(¹²C, p), (¹²C, α), E≈50-100 keV;²³Na(p, α), E≈50-100 keV; calculated ¹²C burning rates. A≈12-96 calculated isotope yields based on these burning rates in massive stars for s-process.

doi: 10.1088/1742-6596/202/1/012023
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2010OG01      Phys.Rev.Lett. 104, 142502 (2010)

Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.E.Benker, M.E.Bennett, S.N.Dmitriev, J.G.Ezold, J.H.Hamilton, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.D.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk

Synthesis of a New Element with Atomic Number Z = 117

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 4n), E=252 MeV; ²⁴⁹Bk(⁴⁸Ca, 3n) , E=247 MeV;measured Eα, Iα, α-α correlations. ^293,294Ts; deduced σ, decay chains, T_1/2.

RADIOACTIVITY ^293,294Ts, ^289,290Mc, ^285,286Nh, ²⁸²Rg, ²⁷⁸Mt, ²⁷⁴Bh(α); measured Eα, Iα, and half-lives. ²⁷⁰Db, ²⁸¹Rg(SF); measured TKE, and T_1/2.

doi: 10.1103/PhysRevLett.104.142502
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Data from this article have been entered in the XUNDL database. For more information, click here.