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NSR database version of May 3, 2024.

Search: Author = R.Sudowe

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2019MA34      Appl.Radiat.Isot. 148, 27 (2019)

S.L.Maxwell, D.R.McAlister, R.Sudowe

Rapid method to determine Polonium-210 in urban matrices

RADIOACTIVITY ²¹⁰Po(α); measured decay products, Eα, Iα; deduced activities.

doi: 10.1016/j.apradiso.2019.03.018
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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.

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.

2009FO02      Phys.Rev. C 79, 027602 (2009)

C.M.Folden III, I.Dragojevic, Ch.E.Dullmann, R.Eichler, M.A.Garcia, J.M.Gates, S.L.Nelson, R.Sudowe, K.E.Gregorich, D.C.Hoffman, H.Nitsche

Measurement of the ²⁰⁸Pb(⁵²Cr, n)²⁵⁹Sg excitation function

NUCLEAR REACTIONS ²⁰⁸Pb(⁵²Cr, n)²⁵⁹Sg, E=250.7-266.2 MeV; ²⁰⁸Pb(⁵²Cr, 2n)²⁵⁸Sg, E=250.7-266.2 MeV. Measured excitation functions, σ.

RADIOACTIVITY ²⁵⁹Sg, ²⁵⁸Sg, ²⁵⁵Rf(α), (SF), (EC), ²⁵¹No(α); measured Eα, half-lives, decay modes.

doi: 10.1103/PhysRevC.79.027602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1670. Data from this article have been entered in the XUNDL database. For more information, click here.

2008DR05      Phys.Rev. C 78, 024605 (2008)

I.Dragojevic, K.E.Gregorich, Ch.E.Dullmann, M.A.Garcia, J.M.Gates, S.L.Nelson, L.Stavsetra, R.Sudowe, H.Nitsche

Influence of projectile neutron number in the ²⁰⁸Pb(⁴⁸Ti, n)²⁵⁵Rf and ²⁰⁸Pb(⁵⁰Ti, n)²⁵⁷Rf reactions

NUCLEAR REACTIONS ²⁰⁸Pb(⁴⁸Ti, n), (⁴⁸Ti, 2n), (⁵⁰Ti, n), (⁵⁰Ti, 2n), E=4.6-4.8 MeV/nucleon; measured excitation functions, σ.

RADIOACTIVITY ^{254,255,256,257}Rf(α); measured Eα, Iα, half-lives.

doi: 10.1103/PhysRevC.78.024605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1738. Data from this article have been entered in the XUNDL database. For more information, click here.

2008GA08      Phys.Rev. C 77, 034603 (2008)

J.M.Gates, M.A.Garcia, K.E.Gregorich, Ch.E.Dullmann, I.Dragojevic, J.Dvorak, R.Eichler, C.M.Folden III, W.Loveland, S.L.Nelson, G.K.Pang, L.Stavsetra, R.Sudowe, A.Turler, H.Nitsche

Synthesis of rutherfordium isotopes in the ²³⁸U(²⁶Mg, xn)^264-xRf reaction and study of their decay properties

NUCLEAR REACTIONS ²³⁸U(²⁶Mg, 3n), (²⁶Mg, 4n), (²⁶Mg, 5n), (²⁶Mg, 6n), E=4.9-6.0 MeV/nucleon; measured excitation functions, σ, half-lives, cross sections.

RADIOACTIVITY ²⁵⁸Rf(α) [from ²³⁸U(²⁶Mg, 6n), E=4.9-6.0 MeV/nucleon]; ²⁵⁹Rf(EC) [from ²³⁸U(²⁶Mg, 5n), E=4.9-6.0 MeV/nucleon]; ²⁶⁰Rf(α), (SF) [from ²³⁸U(²⁶Mg, 4n), E=4.9-6.0 MeV/nucleon]; ²⁶¹Rf(α), (SF) [from ²³⁸U(²⁶Mg, 3n), E=4.9-6.0 MeV/nucleon]; ²⁵⁴No(α); measured α spectra, Q-values, charged particle spectra.^{242,244,246,248,250,252,254,256,258}Fm, ^{248,250,252,254,256}No, ^{250,252,254,256}Rf, ^{252,254,256,258,260}Sg; systematics.

doi: 10.1103/PhysRevC.77.034603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1607. Data from this article have been entered in the XUNDL database. For more information, click here.

2008GA25      Phys.Rev. C 78, 034604 (2008)

J.M.Gates, S.L.Nelson, K.E.Gregorich, I.Dragojevic, Ch.E.Dullmann, P.A.Ellison, C.M.Folden III, M.A.Garcia, L.Stavsetra, R.Sudowe, D.C.Hoffman, H.Nitsche

Comparison of reactions for the production of ^{258, 257}Db: ²⁰⁸Pb(⁵¹V, xn) and ²⁰⁹Bi(⁵⁰Ti, xn)

NUCLEAR REACTIONS ²⁰⁸Pb(⁵¹V, n), (⁵¹V, 2n), E=4.7-5.1 MeV/nucleon; measured excitation function, σ. ²⁰⁹Bi(⁵⁰Ti, n), (⁵⁰Ti, 2n); systematics of excitation functions, σ.

RADIOACTIVITY ^257,258Db, ^253,254Lr, ^249,250Md, ²⁴⁶Cf, ²⁵⁰Fm, ²⁵⁴No, ²⁴⁵Es(α); measured α-spectra, half-lives.

doi: 10.1103/PhysRevC.78.034604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1703. Data from this article have been entered in the XUNDL database. For more information, click here.

2008NE01      Phys.Rev.Lett. 100, 022501 (2008)

S.L.Nelson, K.E.Gregorich, I.Dragojevic, M.A.Garcia, J.M.Gates, R.Sudowe, H.Nitsche

Lightest Isotope of Bh Produced via the ²⁰⁹Bi(⁵²Cr, n)²⁶⁰Bh Reaction

NUCLEAR REACTIONS ²⁰⁹Bi(⁵²Cr, n), E=257 MeV; measured correlated decay chain Eα, Iα, production cross section.

doi: 10.1103/PhysRevLett.100.022501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2008NE08      Phys.Rev. C 78, 024606 (2008)

S.L.Nelson, C.M.Folden III, K.E.Gregorich, I.Dragojevic, Ch.E.Dullmann, R.Eichler, M.A.Garcia, J.M.Gates, R.Sudowe, H.Nitsche

Comparison of complementary reactions for the production of ^{261, 262}Bh

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁵Mn, n), (⁵⁵Mn, 2n), E=273, 278, 283 MeV; ²⁰⁹Bi(⁵⁴Cr, n), (⁵⁴Cr, 2n), E=253.5-272.3 MeV; measured excitation functions, σ, half-lives.

doi: 10.1103/PhysRevC.78.024606
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Data from this article have been entered in the XUNDL database. For more information, click here.

2007OM01      Eur.Phys.J. D 45, 91 (2007)

J.P.Omtvedt, J.Alstad, T.Bjornstad, Ch.E.Dullmann, K.E.Gregorich, D.C.Hoffman, H.Nitsche, K.Opel, D.Polakova, F.Samadani, F.Schulz, G.Skarnemark, L.Stavsetra, R.Sudowe, L.Zheng

Chemical properties of the transactinide elements studied in liquid phase with SISAK

doi: 10.1140/epjd/e2007-00214-6
Citations: PlumX Metrics

2006EI01      Radiochim.Acta 94, 181 (2006)

R.Eichler, W.Bruchle, R.Buda, S.Burger, R.Dressler, Ch.E.Dullmann, J.Dvorak, K.Eberhardt, B.Eichler, C.M.Folden III, H.W.Gaggeler, K.E.Gregorich, F.Haenssler, D.C.Hoffman, H.Hummrich, E.Jager, J.V.Kratz, B.Kuczewski, D.Liebe, D.Nayak, H.Nitsche, D.Piguet, Z.Qin, U.Rieth, M.Schadel, B.Schausten, E.Schimpf, A.Semchenkov, S.Soverna, R.Sudowe, N.Trautmann, P.Thorle, A.Turler, B.Wierczinski, N.Wiehl, P.A.Wilk, G.Wirth, A.B.Yakushev, A.von Zweidorf

Attempts to chemically investigate element 112

NUCLEAR REACTIONS ²³⁸U(⁴⁸Ca, X), E=231, 235 MeV; measured delayed fission, Eα, (fission)α-coin; deduced no evidence for ²⁸³Cn. Thermochromatography.

doi: 10.1524/ract.2006.94.4.181
Citations: PlumX Metrics

2006FO02      Phys.Rev. C 73, 014611 (2006)

C.M.Folden III, S.L.Nelson, Ch.E.Dullmann, J.M.Schwantes, R.Sudowe, P.M.Zielinski, K.E.Gregorich, H.Nitsche, D.C.Hoffman

Excitation function for the production of ²⁶²Bh (Z = 107) in the odd-Z-projectile reaction ²⁰⁸Pb(⁵⁵Mn, n)

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁵Mn, n), E=260, 264, 268 MeV; measured delayed Eα, αα-coin, excitation function. ²⁰⁸Pb(⁵⁵Mn, 2n), E=268 MeV; measured delayed Eα, αα-coin; deduced evidence for ²⁶¹Bh. Gas-filled separator.

RADIOACTIVITY ^261,262,262mBh, ^257,258Db, ^253m,254Lr, ²⁵⁴No, ²⁵⁰Fm(α) [from ²⁰⁸Pb(⁵⁵Mn, xn) and subsequent decay]; measured Eα, T_1/2.

doi: 10.1103/PhysRevC.73.014611
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1735.

2006GR24      Phys.Rev. C 74, 044611 (2006)

K.E.Gregorich, J.M.Gates, Ch.E.Dullmann, R.Sudowe, S.L.Nelson, M.A.Garcia, I.Dragojevic, C.M.Folden III, S.H.Neumann, D.C.Hoffman, H.Nitsche

New isotope ²⁶⁴Sg and decay properties of ^262-264Sg

NUCLEAR REACTIONS ²³⁸U(³⁰Si, 4n), (³⁰Si, 5n), (³⁰Si, 6n), E=147-174 MeV; measured delayed Eα, (recoil)α-coin; deduced excitation functions.

RADIOACTIVITY ^262,264Sg(SF); measured T_1/2, α-decay branching upper limit. ²⁶³Sg(SF), (α); measured T_1/2, branching ratio. ²⁵⁹Rf, ²⁵⁵No; measured T_1/2.

doi: 10.1103/PhysRevC.74.044611
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1512. Data from this article have been entered in the XUNDL database. For more information, click here.

2005DU23      Nucl.Instrum.Methods Phys.Res. A551, 528 (2005)

Ch.E.Dullmann, C.M.Folden III, K.E.Gregorich, D.C.Hoffman, D.Leitner, G.K.Pang, R.Sudowe, P.M.Zielinski, H.Nitsche

Heavy-ion-induced production and physical preseparation of short-lived isotopes for chemistry experiments

NUCLEAR REACTIONS Ge(¹⁸O, X)^83mSr/⁸³Y/^84mY/^88mY/⁸⁵Zr/⁸⁷Zr, E=82.8 GeV; ⁸⁴Se(¹⁸O, X)^86mY/⁸⁵Zr/⁸⁷Nb/^87mNb/⁸⁸Nb/⁸⁸Mo, E=82.7 MeV; ¹²⁴Sn(⁵⁰Ti, X)^168mLu/¹⁶⁷Hf/¹⁶⁸Hf, E=223.7 MeV; ¹¹⁶Sn(⁵⁰Ti, X)¹⁶²Tm/¹⁶¹Yb/¹⁶²Yb/¹⁶³Yb/¹⁶²Lu/¹⁶²Hf, E=224.4 MeV; measured delayed Eγ, Iγ following residual nucleus decay. Physical preseparation technique.

doi: 10.1016/j.nima.2005.05.077
Citations: PlumX Metrics

2005GR19      Phys.Rev. C 72, 014605 (2005)

K.E.Gregorich, W.Loveland, D.Peterson, P.M.Zielinski, S.L.Nelson, Y.H.Chung, Ch.E.Dullmann, C.M.Folden III, K.Aleklett, R.Eichler, D.C.Hoffman, J.P.Omtvedt, G.K.Pang, J.M.Schwantes, S.Soverna, P.Sprunger, R.Sudowe, R.E.Wilson, H.Nitsche

Attempt to confirm superheavy element production in the ⁴⁸Ca + ²³⁸U reaction

NUCLEAR REACTIONS ²³⁸U(⁴⁸Ca, 3n), E=230.3, 235.6 MeV; measured σ upper limits; deduced no evidence for ²⁸³Cn. Comparison with previous results.

doi: 10.1103/PhysRevC.72.014605
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2005ST16      Nucl.Instrum.Methods Phys.Res. A543, 509 (2005)

L.Stavsetra, K.E.Gregorich, J.Alstad, H.Breivik, K.Eberhardt, C.M.Folden III, T.N.Ginter, M.Johansson, U.W.Kirbach, D.M.Lee, M.Mendel, L.A.Omtvedt, J.B.Patin, G.Skarnemark, R.Sudowe, P.A.Wilk, P.M.Zielinski, H.Nitsche, D.C.Hoffman, J.P.Omtvedt

Liquid-scintillation detection of preseparated ²⁵⁷Rf with the SISAK-system

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁰Ti, n), E=237 MeV; measured delayed αα-coin; deduced evidence for ²⁵⁷Rf. Gas-filled separator, fast liquid-liquid extraction system.

doi: 10.1016/j.nima.2004.12.010
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2004FO08      Phys.Rev.Lett. 93, 212702 (2004)

C.M.Folden III, K.E.Gregorich, Ch.E.Dullmann, H.Mahmud, G.K.Pang, J.M.Schwantes, R.Sudowe, P.M.Zielinski, H.Nitsche, D.C.Hoffman

Development of an Odd-Z-Projectile Reaction for Heavy Element Synthesis: ²⁰⁸Pb(⁶⁴Ni, n)²⁷¹Ds and ²⁰⁸Pb(⁶⁵Cu, n)²⁷²Rg

NUCLEAR REACTIONS ²⁰⁸Pb(⁶⁴Ni, n), E=311.5, 314.3 MeV; ²⁰⁸Pb(⁶⁵Cu, n), E=321 MeV; measured measured αα-coin following residual nucleus decay; deduced σ. Gas-filled separator.

RADIOACTIVITY ²⁷¹Ds, ²⁶⁷Hs, ^263mSg, ²⁵⁹Rf, ²⁵⁵No(α) [from ²⁰⁸Pb(⁶⁴Ni, n) and subsequent decay]; ²⁷²Rg, ²⁶⁸Mt, ²⁶⁴Bh, ²⁶⁰Db, ²⁵⁶Lr(α) [from ²⁰⁸Pb(⁶⁵Cu, n) and subsequent decay]; measured Eα, T_1/2. Gas-filled separator.

doi: 10.1103/PhysRevLett.93.212702
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2004GA18      Nucl.Phys. A734, 208 (2004)

H.W.Gaggeler, W.Bruchle, Ch.E.Dullmann, R.Dressler, K.Eberhardt, B.Eichler, R.Eichler, C.M.Folden, T.N.Ginter, F.Glaus, K.E.Gregorich, F.Haenssler, D.C.Hoffman, E.Jager, D.T.Jost, U.W.Kirbach, J.V.Kratz, H.Nitsche, J.B.Patin, V.Pershina, D.Piguet, Z.Qin, U.Rieth, M.Schadel, E.Schimpf, B.Schausten, S.Soverna, R.Sudowe, P.Thorle, N.Trautmann, A.Turler, A.Vahle, P.A.Wilk, G.Wirth, A.B.Yakushev, A.von Zweidorf

Chemical and nuclear studies of hassium and element 112

NUCLEAR REACTIONS ²⁴⁸Cm(²⁶Mg, 4n), (²⁶Mg, 5n), E=145 MeV; ²³⁸U(⁴⁸Ca, 3n), E=239 MeV; measured yields. Chemical properties discussed.

doi: 10.1016/j.nuclphysa.2004.01.036
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2003DU27      Czech.J.Phys. (Supplement) 53, A291 (2003)

Ch.E.Dullmann, R.Dressler, B.Eichler, H.W.Gaggeler, F.Glaus, D.T.Jost, D.Piguet, S.Soverna, A.Turler, W.Bruchle, R.Eichler, E.Jager, V.Pershina, M.Schadel, B.Schausten, E.Schimpf, H.-J.Schott, G.Wirth, K.Eberhardt, P.Thorle, N.Trautmann, T.N.Ginter, K.E.Gregorich, D.C.Hoffman, U.W.Kirbach, D.M.Lee, H.Nitsche, J.B.Patin, R.Sudowe, P.M.Zielinski, S.N.Timokhin, A.B.Yakushev, A.Vahle, Z.Qin

First chemical investigation of hassium (Hs, Z=108)

RADIOACTIVITY ^269,270Hs(α); measured Eα, Iα.

doi: 10.1007/s10582-003-0037-4
Citations: PlumX Metrics

2003GI05      Phys.Rev. C 67, 064609 (2003); Erratum Phys.Rev. C 68, 029901 (2003)

T.N.Ginter, K.E.Gregorich, W.Loveland, D.M.Lee, U.W.Kirbach, R.Sudowe, C.M.Folden III, J.B.Patin, N.Seward, P.A.Wilk, P.M.Zielinski, K.Aleklett, R.Eichler, H.Nitsche, D.C.Hoffman

Confirmation of production of element 110 by the ²⁰⁸Pb(⁶⁴Ni, n) reaction

NUCLEAR REACTIONS ²⁰⁸Pb(⁶⁴Ni, n), E=312.5, 315, 317.5 MeV: measured delayed (recoil)α-coin; deduced production σ.

RADIOACTIVITY ²⁷¹Ds, ²⁶⁷Hs, ²⁶³Sg, ²⁵⁹Rf, ²⁵⁵No(α) [from ²⁰⁸Pb(⁶⁴Ni, n) and subsequent decay]; measured Eα.

doi: 10.1103/PhysRevC.67.064609
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1698.

2003GR26      Eur.Phys.J. A 18, 633 (2003)

K.E.Gregorich, T.N.Ginter, W.Loveland, D.Peterson, J.B.Patin, C.M.Folden III, D.C.Hoffman, D.M.Lee, H.Nitsche, J.P.Omtvedt, L.A.Omtvedt, L.Stavsetra, R.Sudowe, P.A.Wilk, P.M.Zielinski, K.Aleklett

Cross-section limits for the ²⁰⁸Pb(⁸⁶Kr, n)²⁹³118 reaction

NUCLEAR REACTIONS ²⁰⁸Pb(⁸⁶Kr, X), E=449 MeV; measured evaporation residue yields; deduced no evidence for ²⁹³Og. ²⁰⁸Pb(⁸⁶Kr, n), E=449 MeV; deduced production σ upper limit.

doi: 10.1140/epja/i2002-10165-x
Citations: PlumX Metrics

2003KR20      Radiochim.Acta 91, 59 (2003)

J.V.Kratz, A.Nahler, U.Rieth, A.Kronenberg, B.Kuczewski, E.Strub, W.Bruchle, M.Schadel, B.Schausten, A.Turler, H.W.Gaggeler, D.T.Jost, K.E.Gregorich, H.Nitsche, C.Laue, R.Sudowe, P.A.Wilk

An EC-branch in the decay of 27-s ²⁶³Db: Evidence for the isotope ²⁶³Rf

RADIOACTIVITY ²⁶³Db(EC), (α), (SF) [from ²⁴⁹Bk(¹⁸O, 4n)]; measured Eα, fission fragment spectra; deduced EC-decay branching ratio, evidence for ²⁶³Rf. ²⁶³Rf(SF) [from ²⁶³Db decay]; measured T_1/2. Radiochemical separation.

doi: 10.1524/ract.91.1.59.19010
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2003TU05      Eur.Phys.J. A 17, 505 (2003)

A.Turler, Ch.E.Dullmann, H.W.Gaggeler, U.W.Kirbach, A.B.Yakushev, M.Schadel, W.Bruchle, R.Dressler, K.Eberhardt, B.Eichler, R.Eichler, T.N.Ginter, F.Glaus, K.E.Gregorich, D.C.Hoffman, E.Jager, D.T.Jost, D.M.Lee, H.Nitsche, J.B.Patin, V.Pershina, D.Piguet, Z.Qin, B.Schausten, E.Schimpf, H.-J.Schott, S.Soverna, R.Sudowe, P.Thorle, S.N.Timokhin, N.Trautmann, A.Vahle, G.Wirth, P.M.Zielinski

On the decay properties of ²⁶⁹Hs and indications for the new nuclide ²⁷⁰Hs

NUCLEAR REACTIONS ²⁴⁸Cm(²⁶Mg, xn), E=143.7-146.8 MeV; measured residual nucleus decay; deduced evidence for ^269,270Hs. Chemical separation.

RADIOACTIVITY ^269,270Hs, ^265,266Sg, ²⁶¹Rf, ²⁵⁷No(α) [from ²⁴⁸Cm(²⁶Mg, xn) and subsequent decay]; measured Eα, T_1/2. ^261,262Rf(SF); measured fission fragment energies.

doi: 10.1140/epja/i2002-10163-0
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2002DU21      Nature(London) 418, 859 (2002)

Ch.E.Dullmann, W.Bruchle, R.Dressler, K.Eberhardt, B.Eichler, R.Eichler, H.W.Gaggeler, T.N.Ginter, F.Glaus, K.E.Gregorich, D.C.Hoffman, E.Jager, D.T.Jost, U.W.Kirbach, D.M.Lee, H.Nitsche, J.B.Patin, V.Pershina, D.Piguet, Z.Qin, M.Schadel, B.Schausten, E.Schimpf, H.-J.Schott, S.Soverna, R.Sudowe, P.Thorle, S.N.Timokhin, N.Trautmann, A.Turler, A.Vahle, G.Wirth, A.B.Yakushev, P.M.Zielinski

Chemical investigation of hassium (element 108)

RADIOACTIVITY ^269,270Hs, ^265,266Sg, ²⁶¹Rf(α) [from ²⁴⁸Cm(²⁶Mg, xn) and subsequent decay]; measured Eα. Chemical properties of hassium discussed.

doi: 10.1038/nature00980
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2002KI25      Nucl.Instrum.Methods Phys.Res. A484, 587 (2002)

U.W.Kirbach, C.M.Folden III, T.N.Ginter, K.E.Gregorich, D.M.Lee, V.Ninov, J.P.Omtvedt, J.B.Patin, N.K.Seward, D.A.Strellis, R.Sudowe, A.Turler, P.A.Wilk, P.M.Zielinski, D.C.Hoffman, H.Nitsche

The Cryo-Thermochromatographic Separator (CTS): A new rapid separation and α-detection system for on-line chemical studies of highly volatile osmium and hassium (Z=108) tetroxides

doi: 10.1016/S0168-9002(01)01990-8
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2000LA25      Phys.Rev. C61, 067603 (2000)

C.A.Laue, K.E.Gregorich, R.Sudowe, J.L.Adams, M.R.Lane, D.M.Lee, C.A.McGrath, D.A.Shaughnessy, D.A.Strellis, E.R.Sylwester, P.A.Wilk, D.C.Hoffman

Half-Life of ²³²Pu and Excitation Function for the ²³³U (³He, 4n)²³²Pu Reaction

NUCLEAR REACTIONS ²³³U(³He, 4n), E=28-47 MeV; measured excitation function.

RADIOACTIVITY ²³²Pu(α) [from ²³³U(³He, 4n)]; measured T_1/2.

doi: 10.1103/PhysRevC.61.067603
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1999LA14      Phys.Rev. C59, 3086 (1999)

C.A.Laue, K.E.Gregorich, R.Sudowe, M.B.Hendricks, J.L.Adams, M.R.Lane, D.M.Lee, C.A.McGrath, D.A.Shaughnessy, D.A.Strellis, E.R.Sylwester, P.A.Wilk, D.C.Hoffman

New Plutonium Isotope: ²³¹Pu

NUCLEAR REACTIONS ²³³U(³He, 5n), E=42-47 MeV; measured αα-coin following residual nucleus decay; deduced evidence for ²³¹Pu. Gas transport, chemical separation.

RADIOACTIVITY ²³¹Pu(α), (EC); measured Eα, T_1/2, branching ratio; deduced logft, Q(α).

doi: 10.1103/PhysRevC.59.3086
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