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Search: Author = J.M.Nitschke

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1997TO12      Phys.Rev. C56, 3410 (1997)

K.S.Toth, D.C.Sousa, J.C.Batchelder, J.M.Nitschke, P.A.Wilmarth

Decay Properties 154Tm and Observation of Fine Structure in Its α-Particle Spectrum

RADIOACTIVITY 154mTm(α)(β+)(EC) [from 92,94Mo(64Zn, X), E ≈ 275 MeV]; measured Eγ, Iγ, Eα, Iα, γγ-, γα-coin; deduced isomer α-decay branching ratio. 150Ho, 154Er deduced levels.

doi: 10.1103/PhysRevC.56.3410
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1995GH04      Nucl.Phys. A583, 861c (1995)

A.Ghiorso, D.Lee, L.P.Somerville, W.Loveland, J.M.Nitschke, W.Ghiorso, G.T.Seaborg, P.Wilmarth, R.Leres, A.Wydler, M.Nurmia, K.Gregorich, R.Gaylord, T.Hamilton, N.J.Hannink, D.C.Hoffman, C.Jarzynski, C.Kacher, B.Kadkhodayan, S.Kreek, M.Lane, A.Lyon, M.A.McMahan, M.Neu, T.Sikkeland, W.J.Swiatecki, A.Turler, J.T.Walton, S.Yashita

Evidence for the Synthesis of 267110 Produced by the 59Co + 209Bi Reaction

NUCLEAR REACTIONS 209Bi(59Co, n), E ≈ 5.1 MeV/nucleon; measured Eα, production σ; deduced evidence for 267Ds.

doi: 10.1016/0375-9474(94)00775-I
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2565.


1995GH05      Phys.Rev. C51, R2293 (1995)

A.Ghiorso, D.Lee, L.P.Somerville, W.Loveland, J.M.Nitschke, W.Ghiorso, G.T.Seaborg, P.Wilmarth, R.Leres, A.Wydler, M.Nurmia, K.Gregorich, K.Czerwinski, R.Gaylord, T.Hamilton, N.J.Hannink, D.C.Hoffman, C.Jarzynski, C.Kacher, B.Kadkhodayan, S.Kreek, M.Lane, A.Lyon, M.A.McMahan, M.Neu, T.Sikkeland, W.J.Swiatecki, A.Turler, J.T.Walton, S.Yashita

Evidence for the Possible Synthesis of Element 110 Produced by the 59Co + 209Bi Reaction

NUCLEAR REACTIONS 209Bi(59Co, n), E=5.1 MeV/nucleon; measured implanted recoil Bρ, dE/dx, recoil energy; deduced 267Ds synthesis evidence, production σ.

doi: 10.1103/PhysRevC.51.R2293
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2565.


1995LU10      Phys.Rev. C52, 1348 (1995)

Q.H.Lu, K.Butler-Moore, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, V.E.Oberacker, W.C.Ma, B.R.S.Babu, J.K.Deng, J.Kormicki, J.D.Cole, R.Aryaeinejad, Y.X.Dardenne, M.Drigert, L.K.Peker, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, I.Y.Lee, M.F.Mohar, J.M.Nitschke, N.R.Johnson, F.K.McGowan, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.B.Gupta

Structure of 108,110,112Ru: Identical bands in 108,110Ru

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, γγγ-, (X-ray)γ-coin. 108,110,112Ru deduced levels, J, π, intraband B(E2) ratios. Rotation-vibration, rigid triaxial rotor calculation.

doi: 10.1103/PhysRevC.52.1348
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1993TO02      Phys.Rev. C47, 1804 (1993)

K.S.Toth, D.C.Sousa, P.A.Wilmarth, J.M.Nitschke, K.S.Vierinen

Electron Capture and β+ Decay of 147Tm

NUCLEAR REACTIONS 92Mo(58Ni, X), E=261 MeV; measured γ spectra, γ(annihilation radiation)-coin, X-ray spectra; deduced evidence for 147Tm.

RADIOACTIVITY 147Tm(EC), (β+), (p); measured γ-spectra, γ(annihilation radiation)-coin, X-ray spectra; deduced (EC+β+) strength. 146Er levels deduced direct proton-decay branch. 147Er deduced transition.

doi: 10.1103/PhysRevC.47.1804
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1993TO04      Phys.Rev. C48, 436 (1993)

K.S.Toth, D.C.Sousa, J.M.Nitschke, K.S.Vierinen, P.A.Wilmarth

Identification of the s1/2 145Dy Ground State

RADIOACTIVITY 145Dy(β+p), (EC) [from 92Mo(58Ni, X), E=283 MeV]; measured β-delayed Ep, Ip, β+p-, γp-coin, I(ce). 145Tb deduced transitions Iγ, γ-multipolarity, I(ce), configuration.

doi: 10.1103/PhysRevC.48.436
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1993TO05      Phys.Rev. C48, 445 (1993)

K.S.Toth, P.A.Wilmarth, J.M.Nitschke, D.C.Sousa

Observation of 146Er Electron Capture and β+ Decay

NUCLEAR REACTIONS 92Mo(58Ni, X), E=280 MeV; measured β-delayed (proton)γ-, (proton)(K X-ray)-coin; deduced evidence for 146Er.

RADIOACTIVITY 146Er(β+p), (EC) [from 92Mo(52Ni, X), E=280 MeV]; measured β-delayed pγ-, (proton)(K X-ray)-coin; deduced T1/2.

doi: 10.1103/PhysRevC.48.445
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1991FI03      Phys.Rev. C43, 1066 (1991)

R.B.Firestone, J.Gilat, J.M.Nitschke, P.A.Wilmarth, K.S.Vierinen

Decay Studies of Neutron Deficient Nuclei Near the Z = 64 Subshell: 142Dy, 140,142Tb, 140,142Gd, 140,142Eu, 142Sm, and 142Pm

RADIOACTIVITY 142Sm, 142Pm, 140,142Eu, 142Gd, 140,142Tb, 142Dy [from 92Mo(54Fe, xnyp), E=261, 312 MeV; 92Mo(52Cr, xnyp), E=224, 244 MeV]; measured γγ-, γ(X-ray)-coin, (EC)-, (β+) branching; deduced Q(EC). 142Dy, 142,140Tb deduced β-delayed proton branching. 142Pm, 142Sm deduced β+-decay emission probabilities. 142,140Gd, 142,140Eu, 142,140Sm, 142Tb deduced levels, Iγ. 142Nd deduced transition, branching intensity.

doi: 10.1103/PhysRevC.43.1066
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1991TO08      Phys.Rev. C44, 1868 (1991)

K.S.Toth, K.S.Vierinen, M.O.Kortelahti, D.C.Sousa, J.M.Nitschke, P.A.Wilmarth

Investigation of A = 155 and A = 151 Nuclides: Identification of the 155Tm s1/2 isomer and the 155Yb β-decay branch

RADIOACTIVITY 155Yb, 155Tm(β+), (α); 151Er(β+); 151Ho(α); measured T1/2, γγ-coin, Eγ, Iγ, Eα, Iα; deduced logft, α reduced widths. 155Tm, 155Er, 151Ho deduced levels, J, π.

doi: 10.1103/PhysRevC.44.1868
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1991TO09      Z.Phys. A340, 343 (1991)

K.S.Toth, K.S.Vierinen, J.M.Nitschke, P.A.Wilmarth, R.M.Chasteler

Alpha-Decaying Low-Spin Levels in 155Lu and 157Lu

RADIOACTIVITY 155,157Lu [from 94,96Mo(64Zn, 2np)]; measured Eα, Iα, α-decay T1/2. 157Lu deduced level.

NUCLEAR REACTIONS 94,96Mo(64Zn, 2np), E not given; measured Eα, Iα.

doi: 10.1007/BF01294685
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1991TO12      Nucl.Instrum.Methods Phys.Res. B56/57, 484 (1991)

K.S.Toth, J.M.Nitschke, K.S.Vierinen, P.A.Wilmarth, R.B.Firestone, M.O.Kortelahti

Spectroscopy of Proton-Rich Nuclei in the Rare Earth Region

NUCLEAR REACTIONS 96Ru, 92,94,95,96Mo, 93Nb(64Zn, X), (58Ni, X), E not given; measured residuals decay spectra; deduced evidence for neutron deficient isotopes with Z=65-71.

RADIOACTIVITY 153Yb, 149Er(EC), (β+); 153Tm(α) [from 153Yb(β+-EC)-decay]; analyzed decay data; deduced s1/2, h11/2 states role.

doi: 10.1016/0168-583X(91)96076-W
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1990AK01      Phys.Rev. C41, 1126 (1990)

Y.A.Akovali, K.S.Toth, A.L.Goodman, J.M.Nitschke, P.A.Wilmarth, D.M.Moltz, M.N.Rao, D.C.Sousa

Single-Particle States in 151Tm and 151Er: Systematics of neutron states in N = 83 Nuclei

RADIOACTIVITY 151Yb, 151Tm(β+) [from 96Ru(58Ni, X), E=360 MeV]; measured Eγ, Iγ, γ(t), γγ-coin; deduced log ft. 151Tm, 151Er deduced levels, J, π, T1/2.

NUCLEAR STRUCTURE 133Sb, 135I, 137Cs, 139La, 141Pr, 143Pm, 145Eu, 147Tb, 149Ho, 151Tm, 137Xe, 139Ba, 141Ce, 143Nd, 145Sm, 147Gd, 149Dy, 151Er; calculated single particle state energies. Hartree-Fock-Bogoliubov method.

doi: 10.1103/PhysRevC.41.1126
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1990CH34      Phys.Rev. C42, R1171 (1990)

R.M.Chasteler, J.M.Nitschke, R.B.Firestone, K.S.Vierinen, P.A.Wilmarth

Decay of the Neutron-Rich Isotope 171Ho and the Identification of 169Dy

RADIOACTIVITY 171Ho, 169Dy(β-); measured T1/2, Eβ, βγ-coin, Iγ, Eγ; deduced log ft, Q. 171Er deduced levels, J, π, ICC. 169Ho deduced levels, J, π.

doi: 10.1103/PhysRevC.42.R1171
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1990CH37      Phys.Rev. C42, R1796 (1990)

R.M.Chasteler, J.M.Nitschke, R.B.Firestone, K.S.Vierinen, P.A.Wilmarth

Decay Studies of the Neutron-Rich Isotopes 168Dy and 168gHo and the Identification of the New Isomer 168mHo

RADIOACTIVITY 168Dy, 168Ho(β-); 168mHo(IT); measured T1/2, Eβ, βγ-coin, Iγ, Eγ; deduced log ft, Q. 168Ho deduced levels, J, π, ICC.

doi: 10.1103/PhysRevC.42.R1796
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1989CH05      Z.Phys. A332, 239 (1989)

R.M.Chasteler, J.M.Nitschke, R.B.Firestone, K.S.Vierinen, P.A.Wilmarth, A.A.Shihab-Eldin

Identification of the Neutron-Rich Isotope 174Er

NUCLEAR REACTIONS W(176Yb, X), E=8.5 MeV/nucleon; measured γ-, X-ray, β-spectra; deduced evidence for 174Er, 171Ho.

RADIOACTIVITY 174Er(β-), 171Ho [from W(176Yb, X), E=8.5 MeV/nucleon]; measured E(γ), I(γ), X-ray, β-spectra, (X-ray)β-coin. 174Tm deduced levels, mass. 171Ho deduced T1/2.


1989FI01      Phys.Rev. C39, 219 (1989)

R.B.Firestone, J.M.Nitschke, P.A.Wilmarth, K.Vierinen, J.Gilat, K.S.Toth, Y.A.Akovali

Decay of 149g+mEr by Positron and Delayed Proton Emission and by Electron Capture

RADIOACTIVITY 149,149mEr(β+p), (EC), (β+) [from 58Ni(94Mo, n2p), E=259 MeV]; measured Eγ, Iγ, β+p-, γγ-coin, β-delayed Ep, Ip; deduced Q(EC), proton separation energy, T1/2. 149Ho deduced levels, (EC/β+). 148Dy levels deduced Iγ.

doi: 10.1103/PhysRevC.39.219
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1989GI06      Phys.Rev. C40, 2249 (1989)

J.Gilat, J.M.Nitschke, P.A.Wilmarth, R.B.Firestone

Decay Studies of Neutron-Deficient Nuclei Near the Z = 64 Subshell: 141Dy, 141Tb, 141,141g+mGd, and 141mEu

RADIOACTIVITY 141Dy(β+p); 141Tb(β+), (EC); 141,141mGd(β+), (EC); 141mEu [from 92Mo(54Fe, X), (52Cr, X)]; measured γγ-, γ(X-ray)-coin. 141Eu deduced isomer decay branching ratios, levels, J, π. 141Gd deduced isomer T1/2, decay features, levels, J, π. 141Dy deduced T1/2.

doi: 10.1103/PhysRevC.40.2249
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1989KO02      Phys.Rev. C39, 636 (1989)

M.O.Kortelahti, K.S.Toth, K.S.Vierinen, J.M.Nitschke, P.A.Wilmarth, R.B.Firestone, R.M.Chasteler, A.A.Shihab-Eldin

Decay Properties of 153Yb and 153Tm; Excitation energies of the s1/2 and h11/2 proton states in 153Tm

RADIOACTIVITY 153Yb(β+) [from 92Mo(64Zn, n2p), E=267 MeV]; 153Tm(β+), (α) [from 92Mo(64Zn, 3p), E=267 MeV]; measured E(γ), I(γ), γ(X-ray)-coin. 153Yb level deduced J, π. 153Tm deduced levels, J, π, isomer α-decay features. 153Er deduced levels, possible J, π, configuration, γ-branching.

doi: 10.1103/PhysRevC.39.636
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1989NI02      Phys.Rev.Lett. 62, 2805 (1989)

J.M.Nitschke, P.A.Wilmarth, R.B.Firestone, P.Moller, K.S.Toth, J.Gilat

Doorway-State Formation and Structure in β-Delayed Proton Decay

RADIOACTIVITY 151Yb, 149Er, 147Dy(β+p); analyzed β+p-coin data; deduced doorway state decay mechanism.

doi: 10.1103/PhysRevLett.62.2805
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1989NI04      Z.Phys. A334, 111 (1989)

J.M.Nitschke, K.S.Toth, K.S.Vierinen, P.A.Wilmarth, R.M.Chasteler

Identification of 153Lu β Decay

NUCLEAR REACTIONS 92Mo(64Zn, 2np), E=285 MeV; measured γ(X-ray)-, γβ+-, γ(particle)-coin, Eγ, Iγ.

RADIOACTIVITY 153Lu(β+), (EC) [from 92Mo(64Zn, 2np), E=285 MeV]; measured γ(X-ray)-, γβ+-, γ(particle)-coin, Eγ, Iγ; deduced isomer T1/2. 153Yb deduced transitions, relative Iγ.


1989VI02      Phys.Rev. C39, 1972 (1989)

K.S.Vierinen, J.M.Nitschke, P.A.Wilmarth, R.M.Chasteler, A.A.Shihab-Eldin, R.B.Firestone, K.S.Toth, Y.A.Akovali

Identification of 145Er and 145Ho

RADIOACTIVITY 145Er(β+p); 145Ho(β+)(EC) [from 145Er-decay]; measured Eγ, Iγ, γ(X-ray)-, p(X-ray)-coin; deduced T1/2. 145Dy deduced levels, isomer configuration.

doi: 10.1103/PhysRevC.39.1972
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1989VI04      Nucl.Phys. A499, 1 (1989)

K.S.Vierinen, J.M.Nitschke, P.A.Wilmarth, R.B.Firestone, J.Gilat

Decay of Neutron Deficient Eu, Sm and Pm Isotopes Near the Proton Drip Line

RADIOACTIVITY 134,135,136Eu, 134,135,136Sm, 134,135,136Pm(β+p) [from 92Mo(46Ti, xnyp), E=192-212 MeV mass separated sources]; measured T1/2, β-delayed Ep, Ip, Eγ; deduced log ft, γγ-, (X-ray)γ-, βγ-, p(X-ray)-, pγ-coin. 135,136Sm, 134,135,136Pm, 134,135,136Nd deduced levels, J, π. n-Ge, planar Ge, plastic scintillator, surface barrier Si(Au) detectors, ΔE-E telescope, enriched targets.

doi: 10.1016/0375-9474(89)90266-2
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1988NI02      Phys.Rev. C37, 2694 (1988)

J.M.Nitschke, P.A.Wilmarth, J.Gilat, K.S.Toth, F.T.Avignone III

Delayed Proton Emission of N = 81 Odd-Odd Precursors: 148Ho, 150Tm, and 152Lu

RADIOACTIVITY 148Ho, 148Er, 150Tm, 152Lu(β+p) [from 96Ru, 94Mo(58Ni, xnyp)]; measured Ip, Ep, pγ-, p(X-ray)-, pβ+-coin; deduced T1/2, J, π, isomers, onset of p emission. 149Ho deduced level energies, proton branching ratios. Statistical model calculations.

doi: 10.1103/PhysRevC.37.2694
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1988TO03      Phys.Rev. C37, 1196 (1988)

K.S.Toth, D.C.Sousa, J.M.Nitschke, P.A.Wilmarth

Beta Decay Properties of 148Er and 148Ho

RADIOACTIVITY 148Er(EC) [from 94Mo(58Ni, 2n2p), E=257 MeV]; 148Ho(EC) [from 94Mo(58Ni, n3p), E=257 MeV]; 148Dy [from 148Ho-decay]; measured Eγ, Iγ, γγ-, γ(X-ray)-coin; deduced log ft, T1/2, J, π. 148Er, 148Ho deduced evidence for β-delayed protons. 148Ho, 148Dy deduced levels, J, π.

doi: 10.1103/PhysRevC.37.1196
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1988TO13      Phys.Rev. C38, 1932 (1988)

K.S.Toth, P.A.Wilmarth, J.M.Nitschke, R.B.Firestone, K.Vierinen, M.O.Kortelahti, F.T.Avignone III

Fine Structure in 153Tm α Decay

RADIOACTIVITY 153Tm(α) [from 92Mo(64Zn, X), E=285 MeV]; measured Eα, Iα, Eγ, Iγ; deduced level sequence, configuration.

doi: 10.1103/PhysRevC.38.1932
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1988VI02      Phys.Rev. C38, 1509 (1988)

K.S.Vierinen, A.A.Shihab-Eldin, J.M.Nitschke, P.A.Wilmarth, R.M.Chasteler, R.B.Firestone, K.S.Toth

Beta Decay of 154Lu and 154Yb

RADIOACTIVITY 154Lu, 154Yb(β+), (EC) [from 92,94Mo(64Zn, xnyp), E=285 MeV]; measured T1/2, β-delayed E(α), I(α), E(p), I(p), E(γ), I(γ), I(ce), γγ-, X-ray(γ)-, βγ-coin; deduced log ft. 154Yb, 154Tm deduced levels, J, π. n-Ge, planar Ge, plastic scintillator, surface barrier Si detectors, ΔE-E telescope, enriched targets.

doi: 10.1103/PhysRevC.38.1509
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1988WI05      Z.Phys. A329, 503 (1988)

P.A.Wilmarth, J.M.Nitschke, K.Vierinen, K.S.Toth, M.Kortelahti

Beta-Delayed Proton Decay of the N = 83 Precursor 153Yb

RADIOACTIVITY 153Yb(β+), (EC), (β+p) [from 92Mo(64Zn, X), E=285 MeV]; measured β-delayed Ep, Ip, pγ-, p(X-ray)-coin; deduced delayed proton decay T1/2, β-strength function. 152Er levels deduced p-branching ratios.


1987TO02      Phys.Rev. C35, 310 (1987)

K.S.Toth, D.C.Sousa, J.M.Nitschke, P.A.Wilmarth

Investigation of A = 152 Radioactivities with Mass-Separated Sources: Identification of 152Lu

NUCLEAR REACTIONS 96Ru(58Ni, X), E=354 MeV; measured Eγ, Iγ, γγ-coin; deduced evidence for 152Lu.

RADIOACTIVITY 152Lu, 152Yb, 152Tm(EC), (IT) [from 96Ru(58Ni, X), E=354 MeV]; measured Eγ, Iγ, T1/2, γγ-coin; deduced log ft.152Yb, 152Tm deduced levels. 152Er deduced levels, α-branching ratio.

doi: 10.1103/PhysRevC.35.310
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1987TO05      Phys.Rev. C35, 620 (1987)

K.S.Toth, D.C.Sousa, J.M.Nitschke, P.A.Wilmarth

Decay Properties of 150Tm and 150Er

RADIOACTIVITY 150Tm, 150Er(EC), (β+) [from 96Ru(58Ni, X), E=372 MeV]; measured Eγ, Iγ, γγ-coin; deduced log ft. 150Tm deduced isomer T1/2, J, π. 150Er, 150Ho deduced levels, J, π. Isotope separator.

doi: 10.1103/PhysRevC.35.620
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1987TO12      Phys.Rev. C36, 826 (1987)

K.S.Toth, J.Gilat, J.M.Nitschke, P.A.Wilmarth, K.Vierinen, F.T.Avignone III

Observation of 149Tm Decay to 149Er Levels and β-Delayed Proton Emission

NUCLEAR REACTIONS 94Mo(58Ni, 2np), E=259 MeV; measured Eγ, Iγ, γγ-, γ(X-ray)-coin; deduced evidence for 149Tm.

RADIOACTIVITY 149Tm(β+), (EC) [from 94Mo(58Ni, p2n), E=259 MeV]; measured Eγ, Iγ, γγ-, (X-ray)γ-coin, T1/2; deduced β--delayed proton precursor character. 149Er deduced levels, J, π, γ-branching.

doi: 10.1103/PhysRevC.36.826
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1986KR02      Phys.Rev. C33, 504 (1986)

J.V.Kratz, W.Bruchle, H.Folger, H.Gaggeler, M.Schadel, K.Summerer, G.Wirth, N.Greulich, G.Herrmann, U.Hickmann, P.Peuser, N.Trautmann, E.K.Hulet, R.W.Lougheed, J.M.Nitschke, R.L.Ferguson, R.L.Hahn

Search for Superheavy Elements in Damped Collisions between 238U and 248Cm

NUCLEAR REACTIONS 248Cm(238U, X), E=6.2-7.3 MeV/nucleon; measured SF-fission fragment kinetic energies, neutron multiplicities; deduced superheavy nuclei production σ upper limit. Chemical separation, spontaneous fission counting.

doi: 10.1103/PhysRevC.33.504
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1986TO12      Phys.Lett. 178B, 150 (1986)

K.S.Toth, Y.A.Ellis-Akovali, J.M.Nitschke, P.A.Wilmarth, P.K.Lemmertz, D.M.Moltz, F.T.Avignone III

Structure in β-Delayed Proton Spectra of N = 81 Precursors

RADIOACTIVITY 151Yb(β+p) [from 96Ru(58Ni, n2p), E=360 MeV]; measured β-delayed Ep, Ip, β+p-, pγ-, p(X-ray)-coin. 150Er deduced levels, J, π, proton branching. Ge, Si detectors, plastic scintillator, on-line separator.

doi: 10.1016/0370-2693(86)91486-3
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1986WI15      Z.Phys. A325, 485 (1986)

P.A.Wilmarth, J.M.Nitschke, R.B.Firestone, J.Gilat

Beta-Delayed Proton Emission in the Lanthanide Region

RADIOACTIVITY 124Pr, 125Ce, 127,131Nd, 131Sm, 140Tb, 141Gd, 141,142,144Dy, 144,146Ho(β+p); measured (K X-ray)p-coin, β-delayed (Ep); deduced ground state J, T1/2. 126Ce, 130Nd deduced rotational band lowest 2+ state. Molybdenum, Ru targets, 36Ar, 40Ca, 54,56Fe, 58Ni beams.


1985SO03      Phys.Rev. C31, 1801 (1985)

L.P.Somerville, M.J.Nurmia, J.M.Nitschke, A.Ghiorso, E.K.Hulet, R.W.Lougheed

Spontaneous Fission of Rutherfordium Isotopes

RADIOACTIVITY 256Rf(SF) [from 249Cf(12C, 5n), E=85 MeV]; 257Rf(SF) [from 249Cf(12C, 4n), E=75 MeV]; 258Rf(SF) [from 246Cm(16O, 4n), E=95 MeV]; 259Rf(SF) [from 245Cm(18O, 4n), E=93 MeV]; 260Rf(SF) [from 249Bk(15N, 4n), E=80 MeV; 248Cm(16O, 4n), E=92 MeV; 249Cf(16O, 3nα), E=96 MeV]; 262Rf(SF) [from 248Cm(18O, 4n), E=89 MeV; 244Pu(22Ne, 4n), E=113 MeV]; measured T1/2(SF), fission branching. Fast tape system.

NUCLEAR REACTIONS, ICPND 244Pu(22Ne, 4n), E=113 MeV; 248Cm(18O, 4n), E=89 MeV; 249Cf(18O, 3nα), E=96 MeV; 248Cm(16O, 4n), E=92 MeV; 249Bk(15N, 4n), E=80 MeV; 245Cm(18O, 4n), E=93 MeV; 246Cm(16O, 4n), E=95 MeV; 249Cf(12C, 4n), E=75 MeV; 249Cf(12C, 5n), E=85 MeV; measured residual production σ, T1/2(SF), fission branch estimate. Fast tape system.

doi: 10.1103/PhysRevC.31.1801
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1985TO11      Phys.Rev. C32, 342 (1985)

K.S.Toth, Y.A.Ellis-Akovali, F.T.Avignone III, R.S.Moore, D.M.Moltz, J.M.Nitschke, P.A.Wilmarth, P.K.Lemmertz, D.C.Sousa, A.L.Goodman

Single-Particle States in 149Er and 149Ho, and the Effect of the Z = 64 Closure

NUCLEAR STRUCTURE 133Sb, 135I, 137Cs, 139La, 141Pr, 143Pm, 145Eu, 147Tb, 149Ho, 131Sn, 133Te, 137Ba, 139Ce, 141Nd, 143Sm, 145Gd, 147Dy, 149Er; calculated single particle states. Hartree-Fock method.

RADIOACTIVITY 149Er(β+), (EC), 149mEr [from 144Sm(12C, 7n), E=135 MeV]; measured Eγ, Iγ, γγ-coin, T1/2, β-delayed Ep, Ip. 149Er deduced levels, J, π, ICC. 149Ho deduced levels, J, π. Mass separation.

doi: 10.1103/PhysRevC.32.342
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1985WI07      Z.Phys. A321, 179 (1985)

P.A.Wilmarth, J.M.Nitschke, P.K.Lemmertz, R.B.Firestone

Beta-Delayed Proton Precursors with 59 ≤ Z ≤ 62

NUCLEAR REACTIONS 92Mo(40Ca, np), (40Ca, n2p), (40Ca, n3p), E=170 MeV; 96Ru(40Ca, n3p), (40Ca, n2p), E=175 MeV; measured Eγ, Iγ, E X-ray, I X-ray, p(X-ray); deduced β-delayed proton emitters 128Pr, 130,132Pm, 129Nd, 133Sm.

RADIOACTIVITY 128Pr, 130,132Pm, 129Nd, 133Sm(β+p) [from 92Mo, 96Ru(40Ca, xnyp), E=170, 175 MeV]; measured β-delayed p(X-ray), Eγ, Iγ, E X-ray, I X-ray; deduced T1/2, average Ep, E(K X-ray), Eγ.

doi: 10.1007/BF01411963
Citations: PlumX Metrics


1984NI03      Z.Phys. A316, 249 (1984)

J.M.Nitschke, P.A.Wilmarth, P.K.Lemmertz, W.-D.Zeitz, J.A.Honkanen

Beta-Delayed Proton Emission Observed in New Lanthanide Isotopes

RADIOACTIVITY 143,141Dy(β+p) [from 92Mo(56Fe, αn), (54Fe, αn), E=275, 274 MeV]; 141Gd(β+p) [from 92Mo(54Fe, n4p), E=274 MeV]; 123Ce(β+p) [from 92Mo(36Ar, nα), E=196 MeV]; 122La(β+p) [from 92Mo(36Ar, npα), E=205 MeV]; 120La(β+p) [from 58Ni(64Zn, np), E=253 MeV]; measured β-delayed Ep, Ip, γp-, X-ray p-coin; deduced T1/2.

doi: 10.1007/BF01412274
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1983NI01      Nucl.Instrum.Methods 206, 341 (1983)

J.M.Nitschke

OASIS: The superhilac on-line isotope separator

NUCLEAR REACTIONS 144Sm(20Ne, xnyp)156Yb/155Yb/154Yb/152Er/153Er/154Er/152Ho/151Ho/153Ho/154Tm/155Tm/156Tm/156Lu, E=168 MeV; measured evaporation residue α-spectra; deduced daughter residuals production.

doi: 10.1016/0167-5087(83)90367-8
Citations: PlumX Metrics


1983NI05      Z.Phys. A312, 265 (1983)

J.M.Nitschke, M.D.Cable, W.-D.Zeitz

New Beta-Delayed Proton Emitters in the Lanthanide Region

NUCLEAR REACTIONS 90Zr(40Ca, npα), (40Ca, nα), E=196 MeV; 90Zr(40Ca, 3np), E=182 MeV; 92Mo(40Ca, α), E=188 MeV; 92Mo(40Ca, nα), E=213 MeV; 50Cr(92Mo, nα), E=480 MeV; 50Cr(92Mo, n2p), E=385 MeV; 92Mo(58Ni, n2pα), E=292 MeV; 92Mo(56Fe, nα), E=275 MeV; measured β-delayed proton activity; deduced evidence for precursors 124La, 126Pr, 127,128Nd, 137,139Gd, 143Dy.

RADIOACTIVITY 125Ce, 126Pr, 127,128Nd, 137,139Gd(β+p) [from 92Mo, 90Zr, 54Fe, 50Cr(92Mo, xnypzα), (58Ni, xnypzα), (56Fe, xnypzα), (40Ca, xnypzα)]; measured β-delayed proton activity, < Ep >; deduced T1/2.

doi: 10.1007/BF01412173
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1982SC05      Phys.Rev.Lett. 48, 852 (1982)

M.Schadel, W.Bruchle, H.Gaggeler, J.V.Kratz, K.Summerer, G.Wirth, G.Herrmann, R.Stakemann, G.Tittel, N.Trautmann, J.M.Nitschke, E.K.Hulet, R.W.Lougheed, R.L.Hahn, R.L.Ferguson

Actinide Production in Collisions of 238U with 248Cm

NUCLEAR REACTIONS 248Cm(238U, X), E=7.4 MeV/nucleon; measured production σ for 244,246,248,250,251Bk, 246,248,250,251,252,253,254Cf, 252,253,254,255,256Es, 252,253,254,255,256Fm, 255,256,257,258Md; deduced dominant transfer reaction deexcitation channel.

doi: 10.1103/PhysRevLett.48.852
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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 T1/2. 260Rf deduced no evidence for 80 ms spontaneous fission decay.

doi: 10.1016/0375-9474(81)90564-9
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1979NI01      Nucl.Phys. A313, 236 (1979)

J.M.Nitschke, R.E.Leber, M.J.Nurmia, A.Ghiorso

Observations in the Reactions of Two Magic Nuclei: 208Pb and 48Ca

NUCLEAR REACTIONS 208Pb(48Ca, xn), 208Pb(40Ar, xn), E(cm)=160-200 MeV; measured σ(E), transfer reaction products; deduced angular momentum, tunneling effects.

doi: 10.1016/0375-9474(79)90578-5
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1978BA44      Phys.Rev.Lett. 41, 738 (1978)

P.A.Baisden, R.E.Leber, M.Nurmia, J.M.Nitschke, M.Michel, A.Ghiorso

Isomeric States in 212Bi

RADIOACTIVITY 212,212mBi; measured T1/2, Eα.

doi: 10.1103/PhysRevLett.41.738
Citations: PlumX Metrics


1978IL01      Phys.Lett. 78B, 209 (1978)

J.D.Illige, E.K.Hulet, J.M.Nitschke, R.J.Dougan, R.W.Lougheed, A.Ghiorso, J.H.Landrum

Search for Volatile Superheavy Elements from the Reaction 248Cm + 48Ca

NUCLEAR REACTIONS 248Cm(48Ca, X), E=267 MeV; measured σ for α-, SF-decay fragments; deduced no volatile superheavy elements with T1/2=1 sec-4.17 days.

doi: 10.1016/0370-2693(78)90007-2
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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.


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.


1974GH04      Phys.Rev.Lett. 33, 1490 (1974)

A.Ghiorso, J.M.Nitschke, J.R.Alonso, C.T.Alonso, M.Nurmia, G.T.Seaborg, E.K.Hulet, R.W.Lougheed

Element 106

NUCLEAR REACTIONS 249Cf(18O, X)263Sg, E=95 MeV; measured reaction products, Eα, Iα; deduced σ.

RADIOACTIVITY 263Sg(α); measured decay products, Eα, Iα; deduced T1/2.

doi: 10.1103/PhysRevLett.33.1490
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2532.


1972TR01      Phys.Rev. C5, 222 (1972)

B.L.Tracy, J.Chaumont, R.Klapisch, J.M.Nitschke, A.M.Poskanzer, E.Roeckl, C.Thibault

Rb and Cs Isotopic Cross Sections from 40-60-Mev-Proton Fission of 238U, 232Th, and 235U

NUCLEAR REACTIONS, Fission 232Th, 235,238U(p, F), E=40-60 MeV; measured σ(E), Rb, Cs isotopic mass distributions; deduced average neutron number.

doi: 10.1103/PhysRevC.5.222
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0005.


1971TR02      Phys.Lett. 34B, 277 (1971)

B.L.Tracy, J.Chaumont, R.Klapisch, J.M.Nitschke, A.M.Poskanzer, E.Roeckl, C.Thibault

Half-Lives of the New Isotopes 99Rb, 98Sr and 145-146Cs

RADIOACTIVITY 96,97,98,99Rb, 98,97Sr, 97,98Y, 145,146Cs; measured T1/2.

doi: 10.1016/0370-2693(71)90603-4
Citations: PlumX Metrics


1966HY02      UCRL-16580, p.88 (1966)

E.K.Hyde, J.M.Nitschke

The Radiations of 1.9-Hour Nb89

RADIOACTIVITY 89Nb [from 81Br(12C, 4n)]; measured T1/2, Eγ. Ge(Li) detector, pair spectrometer.


1966HY03      UCRL-16580, p.87 (1966)

E.K.Hyde, J.M.Nitschke

Radiations of 14-Minute Nb88

RADIOACTIVITY 88Nb; measured Eγ. Ge(Li) detector.


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