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NSR database version of April 26, 2024.

Search: Author = R.A.Boll

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2020KH11      Phys.Rev. C 102, 064602 (2020)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.K.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.B.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Search for elements 119 and 120

NUCLEAR REACTIONS ²⁴⁹Bk, ²⁴⁹Cf(⁵⁰Ti, X)²⁹⁹119^*/²⁹⁹120^*, E(average)=281.5 MeV; measured evaporation residues (ERs), Eα, correlated ER-α and ER-α₁-α₂-SF events using UNILAC accelerator, TASCA separator, and Focal plane detector system (FPDS) consisting of double-sided silicon strip (DSSD) detectors, and Si-strip detectors for position and time correlations of events. ^295,296119, ^295,296120; deduced no evidence for non-random correlated events related to 3n- or 4n-channel deexcitations of the compound nuclei ²⁹⁹119 and ²⁹⁹120, within a sensitivity limit of one event corresponding to σ=65 fb for ²⁴⁹Bk+⁵⁰Ti reaction and σ=200 fb for ²⁴⁹Cf+⁵⁰Ti; discussed nonobservation of Z=119 and 120 superheavy elements within the context of the fusion-evaporation reaction mechanism.

doi: 10.1103/PhysRevC.102.064602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8036.

2020MY01      Nucl.Instrum.Methods Phys.Res. A955, 163282 (2020)

K.G.Myhre, J.D.Burns, N.J.Sims, D.W.Stracener, R.A.Boll

Effects of annealing on fission fragment release from electrodeposited Cf-252 thin-films

RADIOACTIVITY ²⁵²Cf(SF); measured fission products, Eγ, Iγ. ⁹⁹Mo, ¹⁰⁵Rh, ¹¹⁵Cd, ¹³²Te, ¹⁴³Ce; deduced fission fragment capture yields a 76 microm thick Al foil before/after annealing.

doi: 10.1016/j.nima.2019.163282
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2020TA02      Phys.Rev.Lett. 124, 052502 (2020)

T.Tanaka, K.Morita, K.Morimoto, D.Kaji, H.Haba, R.A.Boll, N.T.Brewer, S.Van Cleve, D.J.Dean, S.Ishizawa, Y.Ito, Y.Komori, K.Nishio, T.Niwase, B.C.Rasco, J.B.Roberto, K.P.Rykaczewski, H.Sakai, D.W.Stracener, K.Hagino

Study of Quasielastic Barrier Distributions as a Step towards the Synthesis of Superheavy Elements with Hot Fusion Reactions

NUCLEAR REACTIONS ²⁴⁸Cm(²²Ne, X), (²⁶Mg, X), ²³⁸U(⁴⁸Ca, X), E(cm)=165.1, 203.7 MeV; measured reaction products; deduced σ. Comparison with available data.

doi: 10.1103/PhysRevLett.124.052502
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2019BR01      Appl.Radiat.Isot. 144, 54 (2019)

K.Broderick, R.Lusk, J.Hinderer, J.Griswold, R.Boll, M.Garland, L.Heilbronn, S.Mirzadeh

Reactor production of promethium-147

NUCLEAR REACTIONS ¹⁴⁶Nd(n, γ), E thermal; measured reaction products, Eγ, Iγ; deduced production yields, σ, resonance integral. Comparison with available data.

RADIOACTIVITY ¹⁴⁷Nd(β^-) [from ¹⁴⁶Nd(n, γ), E thermal]; measured decay products, Eγ, Iγ; deduced T_1/2.

doi: 10.1016/j.apradiso.2018.10.025
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14680. Data from this article have been entered in the XUNDL database. For more information, click here.

2019KH04      Phys.Rev. C 99, 054306 (2019)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Fusion reaction ⁴⁸Ca + ²⁴⁹Bk leading to formation of the element Ts (Z=117)

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n)²⁹³Ts/²⁹⁴Ts, E=252.1, 254.0, 258.0 MeV; measured reaction products, evaporation residues (ER), Eα, Iα, (ER)α-correlated decay chains, and σ using double-sided silicon strip detectors for α detection, TASCA separator for evaporation residue, and multiwire proportional counter for detection of residues at UNILAC accelerator facility of GSI. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility.

RADIOACTIVITY ²⁹⁴Ts, ²⁹⁰Mc, ²⁸⁶Nh, ²⁸²Rg, ²⁷⁸Mt, ²⁷⁴Bh, ²⁷⁰Db(α); ²⁹³Ts, ²⁸⁹Mc, ²⁸⁵Nh, ²⁸¹Rg(α); ²⁶⁶Lr, ²⁷⁰Db, ²⁷⁷Mt, ²⁷⁷Hs(SF); measured Eα, Iα, SF events, half-lives. ²⁶⁶Lr, ²⁷⁰Db(α), (SF); measured half-lives and α/SF branching ratios. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility. A=200-240; A=240-260; systematics of α-decay half-lives of isotopes produced in ⁴⁸Ca+²⁴⁹Bk and ⁴⁸Ca+²⁴⁹Cf reactions.

doi: 10.1103/PhysRevC.99.054306
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0944. Data from this article have been entered in the XUNDL database. For more information, click here.

2018BR13      Phys.Rev. C 98, 024317 (2018)

N.T.Brewer, V.K.Utyonkov, K.P.Rykaczewski, Yu.Ts.Oganessian, F.Sh.Abdullin, R.A.Boll, D.J.Dean, S.N.Dmitriev, J.G.Ezold, L.K.Felker, R.K.Grzywacz, M.G.Itkis, N.D.Kovrizhnykh, D.C.McInturff, K.Miernik, G.D.Owen, A.N.Polyakov, A.G.Popeko, J.B.Roberto, A.V.Sabelnikov, R.N.Sagaidak, I.V.Shirokovsky, M.V.Shumeiko, N.J.Sims, E.H.Smith, V.G.Subbotin, A.M.Sukhov, A.I.Svirikhin, Yu.S.Tsyganov, S.M.Van Cleve, A.A.Voinov, G.K.Vostokin, C.S.White, J.H.Hamilton, M.A.Stoyer

Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a ⁴⁸Ca beam

NUCLEAR REACTIONS ^{249,250,251,252}Cf(⁴⁸Ca, 2n), (⁴⁸Ca, 3n), (⁴⁸Ca, 4n), (⁴⁸Ca, 5n), E^*=33-50 MeV; calculated evaporation residual cross sections using from five models for analyzing reactions. ^249,250,251Cf(⁴⁸Ca, xn)²⁹⁴Og, E=252, 258 MeV; Yb(⁴⁸Ca, xn)²¹⁶Th/²¹⁷Th/²¹⁸Th/²¹⁹Th/²²⁰Th, E=252, 258 MeV; ²⁰⁶Pb(⁴⁸Ca, 2n)²⁵²No, E=252, 258 MeV; measured Eα, Iα and (implants)α correlations, using Dubna Gas Filled Recoil Separator (DGFRS) for recoil separation and double-sided silicon strip detectors for α detection at JINR. Reviewed earlier experiments from 2002 to 2012 for the detection of ²⁹⁴Og nuclide. ^295,296Og; predicted production σ, half-life and Eα for the decay of ²⁹⁶Og; discussed future prospects for production of these two nuclides.

RADIOACTIVITY ²⁹⁴Og, ²⁹⁰Lv, ^218,219Th, ^214,215Ra(α); ²⁸⁶Fl(SF); measured Eα, Q(α) and T_1/2. ^294,296Og(α); comparison of experimental values for Q(α) and T_1/2 for ²⁹⁴Og with theoretical predictions for ²⁹⁴Og and ²⁹⁶Og.

doi: 10.1103/PhysRevC.98.024317
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Data from this article have been entered in the XUNDL database. For more information, click here.

2016HO08      Appl.Radiat.Isot. 114, 19 (2016)

S.Hogle, R.A.Boll, K.Murphy, D.Denton, A.Owens, T.J.Haverlock, M.Garland, S.Mirzadeh

Reactor production of Thorium-229

RADIOACTIVITY ²²⁹Ra, ²²⁹Ac(β^-) [from ^226,228Ra, ²²⁷Ac(n, X), E thermal]; measured decay products; deduced yields.

doi: 10.1016/j.apradiso.2016.05.002
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2015RO25      Nucl.Phys. A944, 99 (2015)

J.B.Roberto, C.W.Alexander, R.A.Boll, J.D.Burns, J.G.Ezold, L.K.Felker, S.L.Hogle, K.P.Rykaczewski

Actinide targets for the synthesis of super-heavy elements

doi: 10.1016/j.nuclphysa.2015.06.009
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2014KH04      Phys.Rev.Lett. 112, 172501 (2014)

J.Khuyagbaatar, A.Yakushev, C.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

⁴⁸Ca + ²⁴⁹Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying ²⁷⁰Db and Discovery of ²⁶⁶Lr

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, X)²⁹⁴Ts, E=268.3, 270.2, 274.1 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with experimental data.

RADIOACTIVITY ²⁹⁴Ts, ²⁹⁰Mc, ²⁸⁶Nh, ²⁸²Rg, ²⁷⁸Mt, ²⁷⁴Bh, ²⁷⁰Db, ²⁶⁶Lr(α); measured decay products, Eα, Iα; deduced T_1/2. Comparison with experimental data.

doi: 10.1103/PhysRevLett.112.172501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0731. Data from this article have been entered in the XUNDL database. For more information, click here.

2013AH03      Phys.Rev. C 87, 054328 (2013)

I.Ahmad, J.P.Greene, F.G.Kondev, S.Zhu, M.P.Carpenter, R.V.F.Janssens, R.A.Boll, J.G.Ezold, S.M.Van Cleve, E.Browne

α decay of ₉₇²⁴⁹Bk and levels in ₉₅²⁴⁵Am

RADIOACTIVITY ²⁴⁹Bk(α); measured Eγ, Iγ, Eα, Iα, γα-, γγ-coin, absolute Iγ of 327.45-keV γ ray. Alpha spectra measured using Argonne double-focusing magnetic spectrometer. ²⁴⁹Cf(α)[from ²⁴⁹Bk β^- decay]; measured Eα, Eγ. ²⁴⁵Am; deduced levels, J, π, bands, Nilsson configurations, strong Coriolis mixing, hindrance factors. Comparison with previous experimental results. Systematics of low-lying levels in ^{239,241,243,245}Am.

doi: 10.1103/PhysRevC.87.054328
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Data from this article have been entered in the XUNDL database. For more information, click here.

2013OG04      Phys.Rev. C 87, 054621 (2013)

Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin

Experimental studies of the ²⁴⁹Bk+⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E=243.7, 255.7, 259.8 MeV; measured σ(E) for production of ^293,294Ts using DGFRS separator at FLNR, JINR facility. Comparison with theoretical calculations.

RADIOACTIVITY ^293,294Ts, ^289,290Mc, ^285,286Nh, ^281,282Rg, ²⁷⁸Mt, ²⁷⁴Bh(α)[from α decay chains of ²⁹³Ts and ²⁹⁴Ts formed in ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E=243.7, 255.7, 259.8 MeV]; measured Eα, Iα, half-lives. ²⁷⁰Db, ²⁷⁷Mt, ²⁸¹Rg(SF); measured decay energy, half-lives. ²⁸¹Rg(α), (SF); measured α/SF branching ratio. ²⁷⁷Mt; identified new isotope. Systematics of Q(α), SF- and α-decay half-lives for isotopes in Z=104-117, N=150-177 regions.

doi: 10.1103/PhysRevC.87.054621
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0948. Data from this article have been entered in the XUNDL database. For more information, click here.

2012OG06      Phys.Rev.Lett. 109, 162501 (2012)

Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin

Production and Decay of the Heaviest Nuclei ^{293, 294}117 and ²⁹⁴118

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, X)²⁹³Ts/²⁹⁴Ts, E=247, 252 MeV; ²⁴⁹Cf(⁴⁸Ca, 3n)²⁹⁴Og, E=245, 251 MeV; measured reaction products, Eα, Iα; deduced average σ, T_1/2. Comparison with available data.

RADIOACTIVITY ²⁹⁴Og, ^293,294Ts, ²⁹⁰Lv, ^289,290Mc(α), ²⁸⁶Fl(α), (SF), ^285,286Nh(α), ²⁸²Cn(SF), ²⁸¹Rg(SF), ²⁸²Rg(α), ²⁷⁸Mt, ²⁷⁴Bh(α), ²⁷⁰Db(SF); measured decay products, Eα, Iα; deduced discovery z=117 element, T_1/2, decay branch, Q-values. Comparison with available data.

doi: 10.1103/PhysRevLett.109.162501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0939. Data from this article have been entered in the XUNDL database. For more information, click here.

2005BO07      Appl.Radiat.Isot. 62, 667 (2005)

R.A.Boll, D.Malkemus, S.Mirzadeh

Production of actinium-225 for alpha particle mediated radioimmunotherapy

doi: 10.1016/j.apradiso.2004.12.003
Citations: PlumX Metrics

Note: The following list of authors and aliases matches the search parameter R.A.Boll: , R.A.BOLL