NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 29, 2024.

Search: Author = J.D.Leyba

Found 14 matches.

Back to query form

1994KR03      Phys.Rev. C49, 1859 (1994)

S.A.Kreek, H.L.Hall, K.E.Gregorich, R.A.Henderson, J.D.Leyba, K.R.Czerwinski, B.Kadkhodayan, M.P.Neu, C.D.Kacher, T.M.Hamilton, M.R.Lane, E.R.Sylwester, A.Turler, D.M.Lee, M.J.Nurmia, D.C.Hoffman

Electron-Capture Delayed Fission Properties of the New Isotope ²³⁸Bk

NUCLEAR REACTIONS ²⁴¹Am(α, 7n), E=75 MeV; measured residue production σ. ²³⁸Bk deduced EC-delayed fission probability, T_1/2. Isotope obtained by chemical separation, identification from daughter activity measurements.

RADIOACTIVITY ²³⁸Bk(EC) [from ²⁴¹Am(α, 7n), E=75 MeV]; measured EC-delayed fission (fragment)(X-ray)-coin, T_1/2; deduced delayed fission probability.

doi: 10.1103/PhysRevC.49.1859
Citations: PlumX Metrics

1994KR13      Phys.Rev. C50, 2288 (1994)

S.A.Kreek, H.L.Hall, K.E.Gregorich, R.A.Henderson, J.D.Leyba, K.R.Czerwinski, B.Kadkhodayan, M.P.Neu, C.D.Kacher, T.M.Hamilton, M.R.Lane, E.R.Sylwester, A.Turler, D.M.Lee, M.J.Nurmia, D.C.Hoffman

Electron-Capture Delayed Fission Properties of ²²⁸Np

RADIOACTIVITY ²²⁸Np(EC), (α) [from ²³³U(p, 6n), E=50 MeV]; measured fission (fragment)(X-ray)-coin; deduced EC-delayed fission T_1/2, fission probability, fragment mass yield distribution, EC/α-decay ratio.

NUCLEAR REACTIONS, ICPND ²³³U(p, 6n), E=50 MeV; measured (particle)(X-ray)-coin; deduced residual production σ.

doi: 10.1103/PhysRevC.50.2288
Citations: PlumX Metrics

1992GR02      Phys.Rev. C45, 1058 (1992)

K.E.Gregorich, H.L.Hall, R.A.Henderson, J.D.Leyba, K.R.Czerwinski, S.A.Kreek, B.A.Kadkhodayan, M.J.Nurmia, D.M.Lee, D.C.Hoffman

Fission Branch in ²⁵⁹Lr and Confirmation of ²⁵⁸Lr and ²⁵⁹Lr Mass Assignments

RADIOACTIVITY ^259,258Lr [from ²⁴⁸Cm(¹⁵N, 4n), (¹⁵N, 5n), E=93 MeV]; ^255,254Fm(α) [from ^255,254Md decay following ^259,258Lr(α-decay)]; measured α-spectra, αα-correlations. ²⁵⁸Lr deduced T_1/2, mass assignment. ²⁵⁹Lr deduced T_1/2, SF-decay branch, mass assignment.

doi: 10.1103/PhysRevC.45.1058
Citations: PlumX Metrics

1992KA08      Radiochim.Acta 56, 1 (1992)

B.Kadkhodayan, R.A.Henderson, H.L.Hall, J.D.Leyba, K.R.Czerwinski, S.A.Kreek, N.J.Hannink, K.E.Gregorich, D.M.Lee, M.J.Nurmia, D.C.Hoffman

Identification of ²⁵³Md

NUCLEAR REACTIONS ²⁴³Am(¹³C, 3n), E=66-74 MeV; measured α-spectra, production σ; deduced evidence for ²⁵³Md.

RADIOACTIVITY ²⁵³Md(α) [from ²⁴³Am(¹³C, 3n), E=66-74 MeV]; measured α-spectra, ^252,253Fm growth curves, T_1/2.

doi: 10.1524/ract.1992.56.1.1
Citations: PlumX Metrics

1992MA69      Int.J.Mod.Phys. E1, 221 (1992)

M.T.Magda, J.D.Leyba

Production of Heavy Elements by Transfer of Massive Clusters

NUCLEAR REACTIONS ²⁴⁸Cm(¹²C, X), E=84 MeV; ²⁴⁸Cm(³¹P, X), E=207 MeV; ²⁴⁸Cm(⁴⁰Ar, X), E=245 MeV; ²⁴⁸Cm(⁴⁴Ca, X), E=275 MeV; ²⁵⁴Es(¹³C, X), E not given; ²⁴⁸Cm(¹⁶O, X), (⁴⁸Ca, X), (¹²⁹Xe, X), (⁸⁶Kr, X), E not given; ²⁵⁴Es(⁴⁸Ca, X), E=266 MeV; compiled, reviewed, analyzed residuals production data; deduced massive clusters separation from projectile. Different models used.

doi: 10.1142/S0218301392000114
Citations: PlumX Metrics

1992TU04      Phys.Rev. C46, 1364 (1992)

A.Turler, H.R.von Gunten, J.D.Leyba, D.C.Hoffman, D.M.Lee, K.E.Gregorich, D.A.Bennett, R.M.Chasteler, C.M.Gannett, H.L.Hall, R.A.Henderson, M.J.Nurmia

Actinide Production from the Interactions of ⁴⁰Ca and ⁴⁴Ca with ²⁴⁸Cm and a Comparison with the ⁴⁸Ca + ²⁴⁸Cm System

NUCLEAR REACTIONS ²⁴⁸Cm(⁴⁰Ca, X), (⁴⁴Ca, X), E=231-323 MeV; measured production σ(E) for ²²⁷Th to ²⁴⁹Cm; deduced isotopic distribution widths.

doi: 10.1103/PhysRevC.46.1364
Citations: PlumX Metrics

1991LE19      Phys.Rev. C44, 1850 (1991)

J.D.Leyba, R.A.Henderson, H.L.Hall, K.R.Czerwinski, B.A.Kadkhodayan, S.A.Kreek, E.K.Brady, K.E.Gregorich, D.M.Lee, M.J.Nurmia, D.C.Hoffman

Excitation Functions for Actinides Produced in the Interactions of ³¹P with ²⁴⁸Cm

NUCLEAR REACTIONS, ICPND ²⁴⁸Cm(³¹P, X), E=174-239 MeV; measured σ(E) for Bk, Cf, Es, Fm isotopes production. Potential energy surface calculations comparison.

doi: 10.1103/PhysRevC.44.1850
Citations: PlumX Metrics

1990HA02      Phys.Rev. C41, 618 (1990)

H.L.Hall, K.E.Gregorich, R.A.Henderson, C.M.Gannett, R.B.Chadwick, J.D.Leyba, K.R.Czerwinski, B.Kadkhodayan, S.A.Kreek, D.M.Lee, M.J.Nurmia, D.C.Hoffman, C.E.A.Palmer, P.A.Baisden

Electron-Capture-Delayed Fission Properties of ²³⁴Am

RADIOACTIVITY ²³⁴Am(EC) [from ²³⁷Np(α, 7n), E=75 MeV]; measured EC-delayed fission T_1/2, probability, (X-ray)(fragment)-correlation, (X-ray)γ-coin, Eγ, Iγ, Eα, Iα; deduced α-branching. Rotating wheel system.

NUCLEAR REACTIONS ²³⁷Np(α, 7n), E=75 MeV; measured X-ray spectra; deduced residual production σ.

doi: 10.1103/PhysRevC.41.618
Citations: PlumX Metrics

1990HA28      Phys.Rev. C42, 1480 (1990)

H.L.Hall, K.E.Gregorich, R.A.Henderson, C.M.Gannett, R.B.Chadwick, J.D.Leyba, K.R.Czerwinski, B.Kadkhodayan, S.A.Kreek, N.J.Hannink, D.M.Lee, M.J.Nurmia, D.C.Hoffman, C.E.A.Palmer, P.A.Baisden

Electron-Capture-Delayed Fission Properties of ²³²Am

RADIOACTIVITY ²³²Am(EC) [from ²³⁷Np(α, 9n), E=99 MeV]; measured EC-delayed fission T_1/2, (fragment)(X-ray)-, (fragment)γ-coin; deduced delayed-fission probability. Multiple ²³⁷Np targets, rotating wheel system.

NUCLEAR REACTIONS, ICPND ²³⁷Np(α, 9n), E=99 MeV; measured (particle)(X-ray)-, (particle)(γ)-coin following residue fission; deduced residue production σ.

doi: 10.1103/PhysRevC.42.1480
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14631.

1990HO03      Phys.Rev. C41, 631 (1990)

D.C.Hoffman, D.M.Lee, K.E.Gregorich, M.J.Nurmia, R.B.Chadwick, K.B.Chen, K.R.Czerwinski, C.M.Gannett, H.L.Hall, R.A.Henderson, B.Kadkhodayan, S.A.Kreek, J.D.Leyba

Spontaneous Fission Properties of 2.9-s ²⁵⁶No

RADIOACTIVITY ²⁵⁶No(α), (SF) [from ²⁴⁸Cm(¹²C, X), E=71 MeV]; measured T_1/2, Eα, Qα, α/SF ratio, (fragment)(fragment) kinetic energies, total kinetic energy distribution; deduced fragment mass distributions.

NUCLEAR REACTIONS, ICPND ²⁴⁸Cm(¹²C, 4n), E=71 MeV; measured Eα, Iα; deduced residual production σ.

doi: 10.1103/PhysRevC.41.631
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14055.

1990LE09      Phys.Rev. C41, 2092 (1990)

J.D.Leyba, R.A.Henderson, H.L.Hall, C.M.Gannett, R.B.Chadwick, K.R.Czerwinski, B.A.Kadkhodayan, S.A.Kreek, G.R.Haynes, K.E.Gregorich, D.M.Lee, M.J.Nurmia, D.C.Hoffman

Heavy Actinide Production from the Interactions of ⁴⁰Ar with ²⁴⁸Cm and a Comparison with the ⁴⁴Ca-²⁴⁸Cm System

NUCLEAR REACTIONS, ICPND ²⁴⁸Cm(⁴⁰Ar, X), E=207, 225, 245, 266, 286 MeV; measured σ(E) for production of Bk, Cf, Es, Fm Isotopes. Radiochemical separations.

doi: 10.1103/PhysRevC.41.2092
Citations: PlumX Metrics

1989HA37      Phys.Rev.Lett. 63, 2548 (1989)

H.L.Hall, K.E.Gregorich, R.A.Henderson, C.M.Gannett, R.B.Chadwick, J.D.Leyba, K.R.Czerwinski, B.Kadkhodayan, S.A.Kreek, D.M.Lee, M.J.Nurmia, D.C.Hoffmann

Direct Proof of Electron-Capture-Delayed-Fission Process

RADIOACTIVITY ²³⁴Am(EC), (β⁺) [from ²³⁷Np(α, X), E=70-73 MeV]; measured delayed fission (K X-ray)-, fission (fragment)(γ)-coin; deduced T_1/2, evidence for (EC)-delayed fission process. ²³⁴Pu levels deduced I(K X-ray).

doi: 10.1103/PhysRevLett.63.2548
Citations: PlumX Metrics

1989KR17      Radiochim.Acta 48, 121 (1989)

J.V.Kratz, H.P.Zimmermann, U.W.Scherer, M.Schadel, W.Bruchle, K.E.Gregorich, C.M.Gannett, H.L.Hall, R.A.Henderson, D.M.Lee, J.D.Leyba, M.J.Nurmia, D.C.Hoffman, H.Gaggeler, D.Jost, U.Baltensperger, N.-Q.Ya, A.Turler, Ch.Lienert

Chemical Properties of Element 105 in Aqueous Solution: Halide complex formation and anion exchange into triisoctyl amine

NUCLEAR REACTIONS ²⁴⁹Bk(¹⁸O, 5n), E=114 MeV; measured Eα, Iα; deduced residual nucleus production.

1988GR30      Radiochim.Acta 43, 223 (1988)

K.E.Gregorich, R.A.Henderson, D.M.Lee, M.J.Nurmia, R.M.Chasteler, H.L.Hall, D.A.Bennett, C.M.Gannett, R.B.Chadwick, J.D.Leyba, D.C.Hoffman, G.Herrmann

Aqueous Chemistry of Element 105

NUCLEAR REACTIONS ²⁴⁹Bk(¹⁸O, 5n), E=117 MeV; measured α-spectra following residual decay; deduced ²⁶²Db fission branch, fission, α-activity production σ.

RADIOACTIVITY ²⁶²Db(α), (SF) [from ²⁴⁹Bk(¹⁸O, 5n), E=117 MeV]; ²⁵⁸Lr [from ²⁶²Db decay]; measured Eα, Iα, αα(t). ²⁶²Db deduced fission branch.