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NSR database version of April 11, 2024.

Search: Author = R.A.Boll

Found 13 matches.

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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-α12-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 T1/2.

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 249,250,251,252Cf(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 T1/2. 294,296Og(α); comparison of experimental values for Q(α) and T1/2 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 T1/2. 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 239,241,243,245Am.

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, 294117 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, T1/2. 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, T1/2, 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
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Note: The following list of authors and aliases matches the search parameter R.A.Boll: , R.A.BOLL