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NSR database version of April 25, 2024.

Search: Author = R.J.Silva

Found 29 matches.

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1988HO19      J.Radioanal.Nucl.Chem. 124, 135 (1988)

D.C.Hoffman, R.A.Henderson, K.E.Gregorich, D.A.Bennett, R.M.Chasteler, C.M.Gannett, H.L.Hall, D.M.Lee, M.J.Nurmia, S.Cai, R.Agarwal, A.W.Charlop, Y.Y.Chu, G.T.Seaborg, R.J.Silva

Atom-at-a-time radiochemical separations of the heaviest elements: Lawrencium chemistry

NUCLEAR REACTIONS ²⁴⁹Bk(¹⁸O, 3nα), E=101 MeV; measured reaction products, Eα, Iα. ²⁶⁰Lr; deduced σ, T_1/2.

doi: 10.1007/bf02035512
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2514.

1981NI01      Nucl.Phys. A352, 138 (1981)

J.M.Nitschke, M.Fowler, A.Ghiorso, R.E.Leber, M.E.Leino, M.J.Nurmia, L.P.Somerville, K.E.Williams, E.K.Hulet, J.H.Landrum, R.W.Lougheed, J.F.Wild, C.E.Bemis, Jr., R.J.Silva, P.Eskola

Search for an 80 ms Spontaneous Fission Activity in Bombardments of ²⁴⁹Bk with ¹⁵N

NUCLEAR REACTIONS, Fission ²⁴⁹Bk(¹⁵N, X), E=78, 82, 86, 88, 100 MeV; measured σ(E), spontaneous fission T_1/2. ²⁶⁰Rf deduced no evidence for 80 ms spontaneous fission decay.

doi: 10.1016/0375-9474(81)90564-9
Citations: PlumX Metrics

1978OT03      J.Inorg.Nucl.Chem. 40, 589 (1978)

R.J.Otto, D.J.Morrissey, D.Lee, A.Ghiorso, J.M.Nitschke, G.T.Seaborg, M.M.Fowler, R.J.Silva

A Search for Superheavy Elements with Half-Lives between a Few Minutes and Several Hundred Days, Produced in the ⁴⁸Ca + ²⁴⁸Cm Reaction

NUCLEAR REACTIONS ²⁴⁸Cm(⁴⁸Ca, X), E=255 MeV; measured SF activity; deduced no superheavy yield.

doi: 10.1016/0022-1902(78)80372-8
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2537.

1977BE09      Phys.Rev. C15, 705 (1977)

C.E.Bemis, Jr., R.L.Ferguson, F.Plasil, R.J.Silva, F.Pleasonton, R.L.Hahn

Fragment-Mass and Kinetic-Energy Distributions from the Spontaneous Fission of ²⁵²No

RADIOACTIVITY, Fission ²⁵²No (SF); measured fragment-fragment coin, Eα, T_1/2; deduced SF branching, α/SF, pre-neutron fragment masses, total kinetic energy distribution.

doi: 10.1103/PhysRevC.15.705
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14541.

1977BE36      Phys.Rev. C16, 1146 (1977)

C.E.Bemis, Jr., P.F.Dittner, R.J.Silva, R.L.Hahn, J.R.Tarrant, L.D.Hunt, D.C.Hensley

Production, L X-Ray Identification, and Decay of the Nuclide ²⁶⁰105

RADIOACTIVITY ²⁶⁰Db [from ²⁴⁹Cf(¹⁵N, 4n)]; measured Eα, Iα, Eγ, Iγ, I(EC), xα-coin, xsf-coin, αα(t), T_1/2; deduced SF branching, EC branching, Qα. ²⁵⁶Lr deduced levels, K, J, π, α-hindrance, SF hindrance. ²⁵⁶Lr; measured T_1/2, Eα. ^257,258Lr, ²⁵⁶No, ²¹²At, ^252,254Fm; measured Eα. Enriched target.

doi: 10.1103/PhysRevC.16.1146
Citations: PlumX Metrics

1977BE43      Phys.Rev.Lett. 39, 1246 (1977)

C.E.Bemis, Jr., R.L.Ferguson, F.Plasil, R.J.Silva, G.D.O'Kelley, M.L.Klefer, R.L.Hahn, D.C.Hensley, E.K.Hulet, R.W.Lougheed

Mass Asymmetry and Total-Kinetic-Energy Release in the Spontaneous Fission of ²⁶²[105]

RADIOACTIVITY, Fission ²⁶²Db, ²⁵⁶Fm(SF); measured σ(A), total kinetic energy distributions.

doi: 10.1103/PhysRevLett.39.1246
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset10832.

1977HU04      Phys.Rev.Lett. 39, 385 (1977)

E.K.Hulet, R.W.Lougheed, J.F.Wild, J.H.Landrum, P.C.Stevenson, A.Ghiorso, J.M.Nitschke, R.J.Otto, D.J.Morrissey, P.A.Baisden, B.F.Gavin, D.Lee, R.J.Silva, M.M.Fowler, G.T.Seaborg

Search for Superheavy Elements in the Bombardment of ²⁴⁸Cm with ⁴⁸Ca

NUCLEAR REACTIONS ²⁴⁸Cm(⁴⁸Ca, X), E=267 MeV; measured σ for formation of superheavy elements.

doi: 10.1103/PhysRevLett.39.385
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2537.

1973BE33      Phys.Rev.Lett. 31, 647 (1973)

C.E.Bemis, Jr., R.J.Silva, D.C.Hensley, O.L.Keller, Jr., J.R.Tarrant, L.D.Hunt, P.F.Dittner, R.L.Hahn, C.D.Goodman

X-Ray Identification of Element 104

RADIOACTIVITY ²⁵⁷Rf [from ²⁴⁹Cf(¹²C, 4n), E=73.0 MeV]; measured αx-coin, Eα. ²¹⁴Ra measured T_1/2. ²⁵³No levels deduced transitions, T_1/2.

doi: 10.1103/PhysRevLett.31.647
Citations: PlumX Metrics

1973SI40      Nucl.Phys. A216, 97 (1973)

R.J.Silva, P.F.Dittner, M.L.Mallory, O.L.Keller, K.Eskola, P.Eskola, M.Nurmia, A.Ghiorso

The New Nuclide Nobelium-259

RADIOACTIVITY ²⁵⁹No; measured T_1/2, Eα, Iα. Deduced α-hindrance.

NUCLEAR REACTIONS ²⁴⁸Cm(¹⁸O, 3nα), E=95, 80-110 MeV; measured σ(E), production σ for ²⁵⁹No.

doi: 10.1016/0375-9474(73)90520-4
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetB0004.

1971DI03      Phys.Rev.Lett. 26, 1037 (1971)

P.F.Dittner, C.E.Bemis, Jr., D.C.Hensley, R.J.Silva, C.D.Goodman

Identification of the Atomic Number of Nobelium by an X-Ray Technique

RADIOACTIVITY ²⁵⁵No; measured αX-coin, αX-delay, Eα. ²⁵¹Fm level deduced T_1/2.

doi: 10.1103/PhysRevLett.26.1037
Citations: PlumX Metrics

1970BE44      Inorg.Nucl.Chem.Lett. 6, 747 (1970); ORNL-4581, p.36 (1970)

C.E.Bemis, Jr., R.J.Silva, J.E.Bigelow, A.M.Friedman

Search for a Long-Lived Spontaneous Fission Isomer of ²⁴¹Pu

NUCLEAR REACTIONS ²⁴⁰Pu(n, γ), E=thermal, > 1 MeV; ²⁴²Pu(n, 2n), E > 6.2 MeV; ²³⁸U(α, n), E=40 MeV; measured σ. ²⁴¹Pu deduced no 0.3-yr SF-isomer.

doi: 10.1016/0020-1650(70)80091-5
Citations: PlumX Metrics

1970PE09      Phys.Rev. C2, 468 (1970)

C.M.Perey, R.J.Silva, J.K.Dickens, F.G.Perey

11-MeV Proton Inelastic Scattering from Even-Even Medium-Weight Nuclei

NUCLEAR REACTIONS ⁴⁸Ti, ⁵²Cr, ^54,56Fe, ^60,62,64Ni, ^64,66,68Zn, ^70,72,74,76Ge(p, p), E=11 MeV; measured nothing; analyzed σ(θ) data. ⁴⁸Ti, ⁵²Cr, ^54,56Fe, ^60,62,64Ni, ^64,66,68Zn, ^70,72,74,76Ge levels deduced β.

doi: 10.1103/PhysRevC.2.468
Citations: PlumX Metrics

1970SI03      Priv.Comm. (1970)

R.J.Silva

1970SI07      Phys.Rev. C1, 1564 (1970)

T.Sikkeland, R.J.Silva, A.Ghiorso, M.J.Nurmia

Study of Dy(⁴⁰Ar, xn)Po Reactions

NUCLEAR REACTIONS Dy(⁴⁰Ar, xn), E=160-280 MeV; measured σ(E) for ^{194,195,197,198,199,200}Po production. ^195,197,199Po deduced isomer ratios.

doi: 10.1103/PhysRevC.1.1564
Citations: PlumX Metrics

1970SI19      Phys.Rev. C2, 1948 (1970)

R.J.Silva, R.L.Hahn, K.S.Toth, M.L.Mallory, C.E.Bemis, Jr., P.F.Dittner, O.L.Keller

New Isotopes ²⁴¹Cf and ²⁴⁰Cf

RADIOACTIVITY ^240,241Cf; measured T_1/2, Eα, Iα. ²⁴²Cf; measured Eα.

NUCLEAR REACTIONS ^233,234,235U(¹²C, X), E=60-90 MeV; measured σ(E) for ^240,241,242Cf production.

doi: 10.1103/PhysRevC.2.1948
Citations: PlumX Metrics

1968CH03      Nucl.Phys. A107, 645 (1968)

A.Chetham-Strode, Jr., R.J.Silva, J.R.Tarrant, I.R.Williams

The Decay of ²⁵¹Cf

RADIOACTIVITY ²⁵¹Cf; measured Eα, Iα, Eγ, Iγ, αγ-delay. ²⁴⁷Cm deduced levels, J, π, T_1/2. Si(Au), NaI(Tl), Ge(Li) detectors.

doi: 10.1016/0375-9474(68)90791-4
Citations: PlumX Metrics

1968PE20      Phys.Rev. 175, 1460 (1968)

C.M.Perey, F.G.Perey, J.K.Dickens, R.J.Silva

11-MeV Proton Optical-Model Analysis

NUCLEAR REACTIONS ⁴⁸Ti, ⁵¹V, ⁵²Cr, ^54,56Fe, ⁵⁹Co, ^60,62,64Ni, ^63,65Cu, ^64,66,68Zn(p, p), E=11 MeV; measured σ(θ); deduced model parameters. Optical model.

doi: 10.1103/PhysRev.175.1460
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2165.

1967DI03      ORNL-4182 (1967)

J.K.Dickens, F.G.Perey, R.J.Silva

Elastic and Inelastic Scattering of 11.0 MeV Protons from ⁴⁸Ti, ⁵¹V, ⁵²Cr, ⁵⁴Fe, ⁵⁶Fe, ⁵⁹Co, ⁶⁰Ni, ⁶²Ni, ⁶³Cu, ⁶⁵Cu, ⁶⁴Zn, ⁶⁶Zn, and ⁶⁸Zn: Tabulation of Differential Cross-Sections

NUCLEAR STRUCTURE ⁶⁸Zn, ⁶³Cu, ⁶⁶Zn, ⁶⁴Zn, ⁶⁴Ni, ⁶²Ni, ⁶⁵Cu, ⁴⁸Ti, ⁶⁰Ni, ⁵⁹Co, ⁵²Cr, ⁵²V, ⁵⁴Fe, ⁵⁶Fe; measured not abstracted; deduced nuclear properties.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2165.

1966DI01      Phys.Lett. 21, 657 (1966)

J.K.Dickens, E.Eichler, R.J.Silva, I.R.Williams

Level Structure of ⁹²Mo

NUCLEAR STRUCTURE ⁹²Mo; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(66)90114-4
Citations: PlumX Metrics

1966SI03      Bull.Am.Phys.Soc. 11, No.3, 408, KB9 (1966); and Priv.Comm.

R.J.Silva, A.Chetham-Strode, Jr., J.R.Tarrant, I.R.Williams

Alpha Decay of ²⁵¹Cf

NUCLEAR STRUCTURE ²⁵¹Cf; measured not abstracted; deduced nuclear properties.

1965DI11      ORNL-3851 (1965)

J.K.Dickens, R.J.Silva

Elastic and Inelastic Scattering of 12.0-MeV Protons from ⁶²Ni, ⁶³Cu, and ⁶⁴Zn: Tabulated Differential Cross Sections

NUCLEAR STRUCTURE ⁶³Cu, ⁶⁴Zn, ⁶²Ni; measured not abstracted; deduced nuclear properties.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2175.

1965DI12      ORNL-3858, Vol.1, p.3 (1965)

J.K.Dickens, F.G.Perey, R.J.Silva

Level Structure of ⁶⁴Zn

NUCLEAR STRUCTURE ⁶⁴Zn; measured not abstracted; deduced nuclear properties.

1964SI18      Phys.Rev. 136, B618 (1964)

R.J.Silva, G.E.Gordon

Nuclear Levels of Cd¹¹⁵ and Cd¹¹⁷ from (d, p) Reaction Studies

NUCLEAR STRUCTURE ¹¹⁷Cd, ¹¹⁵Cd; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.136.B618
Citations: PlumX Metrics

1963DI11      Phys.Lett. 6, 53 (1963)

J.K.Dickens, F.G.Perey, R.J.Silva, T.Tamura

Proton Excitation of Two-Phonon Levels

NUCLEAR STRUCTURE ⁶⁴Ni, ⁶²Ni; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(63)90219-1
Citations: PlumX Metrics

1963DI14      Conf.Compd. Nucl.States, Gatlinburg, Tenn. p.38, CB6 (1963)

J.K.Dickens, F.G.Perey, R.J.Silva

Fluctuations in the Excitation Function for Elastic and Inelastic Scattering of Protons from Ni⁶²

NUCLEAR STRUCTURE ⁶²Ni; measured not abstracted; deduced nuclear properties.

1963DI15      Phys.Rev. 132, 1190 (1963)

J.K.Dickens, F.G.Perey, R.J.Silva

Level Structure of Ni⁶⁴

NUCLEAR STRUCTURE ⁶⁴Ni; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.132.1190
Citations: PlumX Metrics

1963DI18      WASH-1044, p.66 (1963)

J.K.Dickens, F.G.Perey, R.J.Silva

Inelastic Scattering of 11 MeV Protons from Medium Weight Nuclei

NUCLEAR STRUCTURE ⁷⁰Ge, ⁷⁶Ge, ⁷²Ge, ⁷⁴Ge; measured not abstracted; deduced nuclear properties.

1963PE06      Phys.Letters 4, 25 (1963)

F.Perey, R.J.Silva, G.R.Satchler

Excited-Core Model of Odd-A Nuclei and the Cu⁶³(p, p') Reaction

NUCLEAR STRUCTURE ⁶³Cu; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(63)90571-7
Citations: PlumX Metrics

1962SI02      Bull.Am.Phys.Soc. 7, No.4, 315, MB5 (1962); Priv. Comm. (April 1962)

R.J.Silva, E.Eichler

Level Structure of Ge⁷¹, Ge⁷³, Ge⁷⁵, and Ge⁷⁷ from the (d, p) Reaction