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NSR database version of April 27, 2024.

Search: Author = J.R.Birkelund

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1985TU01      Phys.Rev. C32, 214 (1985)

L.E.Tubbs, J.R.Birkelund, J.R.Huizenga, D.Hilscher, U.Jahnke, H.Rossner, B.Gebauer

Linear Momentum Transfer in 292-MeV ²⁰Ne-Induced Fission of ¹⁶⁵Ho, ¹⁸¹Ta, ¹⁹⁷Au, ²⁰⁹Bi, and ²³⁸U

NUCLEAR REACTIONS ¹⁶⁵Ho, ¹⁸¹Ta, ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(²⁰Ne, F), E=292 MeV; measured fission (fragment)(fragment)(θ), (fragment)(fragment)(φ). ¹⁸⁵Ir, ²⁰¹Bi, ²¹⁷Ac, ²²⁹Np, ²⁵⁸No deduced linear momentum transfer.

doi: 10.1103/PhysRevC.32.214
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1984BI06      Phys.Rev. C30, 401 (1984)

J.R.Birkelund, J.R.Huizenga

Measurement of Nuclear Potentials from Fusion Excitation Functions

NUCLEAR REACTIONS ²⁷Al(²⁰Ne, X), E(cm) ≈ 16-200 MeV; calculated fusion σ(E); deduced critical distance model limitations in potential parameter determination.

doi: 10.1103/PhysRevC.30.401
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1984MI01      Phys.Rev. C29, 158 (1984)

A.C.Mignerey, K.L.Wolf, D.G.Raich, V.E.Viola, Jr., J.R.Birkelund, W.U.Schroder, J.R.Huizenga

Bombarding Energy Dependence of the ¹⁴⁴Sm + ⁸⁴Kr Reaction

NUCLEAR REACTIONS ¹⁴⁴Sm(⁸⁴Kr, X), E=470, 595, 720 MeV; measured σ(fragment E, θ, Z), total kinetic energy loss; deduced large exit channel deformations, orbiting probability.

doi: 10.1103/PhysRevC.29.158
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1983BI02      Phys.Rev. C27, 882 (1983)

J.R.Birkelund, A.D.Hoover, J.R.Huizenga, W.U.Schroder, W.W.Wilcke

Fusion Cross Sections for the ¹⁶⁵Ho + ⁵⁶Fe Reaction

NUCLEAR REACTIONS ¹⁶⁵Ho(⁵⁶Fe, X), (⁵⁶Fe, F), E=351, 421, 462, 510 MeV; measured fusion, fission σ(fragment θ); deduced σ(fusion) vs E. Dynamical model analysis. ¹⁶⁵Ho(⁴⁰Ar, X), E(cm) ≈ 150-300 MeV; ¹⁶⁵Ho(⁸⁴Kr, X), E(cm) ≈ 300-450 MeV; analyzed σ(fusion) vs E. Dynamical model.

doi: 10.1103/PhysRevC.27.882
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1983BI13      Ann.Rev.Nucl.Part.Sci. 33, 265 (1983)

J.R.Birkelund, J.R.Huizenga

Fusion Reactions between Heavy Nuclei

doi: 10.1146/annurev.ns.33.120183.001405
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1983BR19      Phys.Rev. C28, 1080 (1983)

H.Breuer, A.C.Mignerey, V.E.Viola, K.L.Wolf, J.R.Birkelund, D.Hilscher, J.R.Huizenga, W.U.Schroder, W.W.Wilcke

Charge and Mass Exchange in ⁵⁶Fe-Induced Reactions at 8.3 MeV/Nucleon

NUCLEAR REACTIONS ⁵⁶Fe, ¹⁶⁵Ho, ²⁰⁹Bi, ²³⁸U(⁵⁶Fe, X), E=465 MeV; measured σ(fragment Z, mass); deduced neutron, proton distribution centroids, variances, correlation coefficients, charge equilibration, reaction mechanisms. Gaussian function fits.

doi: 10.1103/PhysRevC.28.1080
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1983HU09      Phys.Rev. C28, 1853 (1983)

J.R.Huizenga, J.R.Birkelund, L.E.Tubbs, D.Hilscher, U.Jahnke, H.Rossner, B.Gebauer, H.Lettau

Limitation of Linear Momentum Transfer in Heavy-Ion Reactions

NUCLEAR REACTIONS ¹⁶⁵Ho, ¹⁸¹Ta, ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(²⁰Ne, F), E=292 MeV; measured fission fragment σ(θ₁, θ₂); deduced linear momentum transfer limitations. Rolling collision model.

doi: 10.1103/PhysRevC.28.1853
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1983KO34      Phys.Lett. 133B, 153 (1983)

J.P.Kosky, W.W.Wilcke, J.R.Birkelund, M.A.Butler, A.D.Dougan, J.R.Huizenga, W.U.Schroder, H.J.Wollersheim, D.Hilscher

Alpha-Particle Emission in the Strongly Damped Reaction of ¹⁵⁶Ho + ⁵⁶Fe at 8.3 MeV/Nucleon

NUCLEAR REACTIONS ¹⁶⁵Ho(⁵⁶Fe, X), E=465 MeV; measured α(fragment)-coin, α-multiplicity vs fragment Z; deduced α-emission mechanism.

doi: 10.1016/0370-2693(83)90549-X
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1983RO09      Phys.Rev. C27, 2666 (1983)

H.Rossner, D.Hilscher, E.Holub, G.Ingold, U.Jahnke, H.Orf, J.R.Huizenga, J.R.Birkelund, W.U.Schroder, W.W.Wilcke

Angular Distributions of Fragments from Fission Induced by 220-MeV ²⁰Ne on Targets of ¹⁶⁵Ho, ¹⁹⁷Au, and ²⁰⁹Bi

NUCLEAR REACTIONS ¹⁶⁵Ho, ¹⁹⁷Au, ²⁰⁹Bi(²⁰Ne, F), E=220 MeV; measured fission fragment σ(θ). ¹⁹⁷Ir, ²¹¹Ac, ²²³Np, ¹⁷⁵Re, ²⁰⁷Fr, ²¹⁹Pa; deduced prefission multi-neutron induced angular momentum dealignment effect. Liquid drop, rotating liquid drop models, incomplete fusion, prefission particle emission mechanisms.

doi: 10.1103/PhysRevC.27.2666
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1983WI06      Phys.Rev.Lett. 51, 99 (1983)

W.W.Wilcke, J.P.Kosky, J.R.Birkelund, M.A.Butler, A.D.Dougan, J.R.Huizenga, W.U.Schroder, H.J.Wollersheim, D.Hilscher

New Mechanism of α-Particle Production in Heavy-Ion-Induced Fission

NUCLEAR REACTIONS ¹⁶⁵Ho(⁵⁶Fe, αF), E=465 MeV; measured fission (fragment)(fragment)α-coin, α-multiplicity vs θα, Eα; deduced α-production mechanism.

doi: 10.1103/PhysRevLett.51.99
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1982BI10      Phys.Rev. C26, 1984 (1982)

J.R.Birkelund, H.Freiesleben, J.R.Huizenga, W.U.Schroder, W.W.Wilcke, K.L.Wolf, J.P.Unik, V.E.Viola, Jr.

Mechanisms of Heavy Ion Dissipative Collisions: The ²⁰⁹Bi + ⁸⁴Kr reaction at E(lab) = 712 MeV

NUCLEAR REACTIONS ²⁰⁹Bi(⁸⁴Kr, X), E=712 MeV; measured σ(fragment θ, E, Z); deduced correlation variables kinetic energy dissipation dependence. Dissipative collisions, proximity one-body transport model.

doi: 10.1103/PhysRevC.26.1984
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1982HO01      Phys.Rev. C25, 256 (1982)

A.D.Hoover, J.R.Birkelund, D.Hilscher, W.U.Schroder, W.W.Wilcke, J.R.Huizenga, H.Breuer, A.C.Mignerey, V.E.Viola, Jr., K.L.Wolf

¹⁶⁵Ho + ⁵⁶Fe Reaction at E(lab) = 462 MeV

NUCLEAR REACTIONS ¹⁶⁵Ho(⁵⁶Fe, X), E=462 MeV; measured σ(fragment, θ, E, Z); deduced interaction times. Dynamical calculations.

doi: 10.1103/PhysRevC.25.256
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1982WO01      Phys.Rev. C25, 338 (1982)

H.J.Wollersheim, W.W.Wilcke, J.R.Birkelund, J.R.Huizenga

Influence of the Impact Parameter on Element Distributions in Dissipative Heavy-Ion Collisions

NUCLEAR REACTIONS ²⁰⁹Bi(¹³⁶Xe, X), E=940, 1130, 1422 MeV; calculated fragment mean kinetic energy vs (L); deduced initial angular momentum, interaction time, charge diffusion coefficient.

doi: 10.1103/PhysRevC.25.338
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1981WO06      Phys.Rev. C24, 2114 (1981)

H.J.Wollersheim, W.W.Wilcke, J.R.Birkelund, J.R.Huizenga, W.U.Schroder, H.Freiesleben, D.Hilscher

²⁰⁹Bi + ¹³⁶Xe Reaction at E(lab) = 1422 MeV

NUCLEAR REACTIONS ²⁰⁹Bi(¹³⁶Xe, X), E=1422 MeV; measured σ(fragment E, Z, θ); deduced reaction mechanism, element distribution first, second moments. One-body transport model.

doi: 10.1103/PhysRevC.24.2114
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1980MI10      Phys.Rev.Lett. 45, 509 (1980)

A.C.Mignerey, V.E.Viola, Jr., H.Breuer, K.L.Wolf, B.G.Glagola, J.R.Birkelund, D.Hilscher, J.R.Huizenga, W.U.Schroder, W.W.Wilcke

Dependence of Isobaric Charge Distributions on Energy Loss and Mass Asymmetry in Damped Collisions

NUCLEAR REACTIONS ⁵⁶Fe, ¹⁶⁵Ho, ²³⁸U(⁵⁶Fe, X), E=8.3 MeV/nucleon; measured σ(fragment E, mass, Z); deduced isobaric charge, isotopic mass distribution variances vs energy loss. Equilibration models, damped collisions.

doi: 10.1103/PhysRevLett.45.509
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1980SC02      Phys.Rev.Lett. 44, 308 (1980)

W.U.Schroder, J.R.Birkelund, J.R.Huizenga, W.W.Wilcke, J.Randrup

Effect of Pauli Blocking on Exchange and Dissipation Mechanisms Operating in Heavy-Ion Reactions

NUCLEAR REACTIONS ²⁰⁹Bi(¹³⁶Xe, X), E=940, 1130 MeV; ²⁰⁹Bi(⁵⁶Fe, X), E=465 MeV; calculated energy loss vs fragment Z distribution variance. Exchange-induced dissipation mechanism, Pauli principle.

doi: 10.1103/PhysRevLett.44.308
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1980VI04      Phys.Rev. C22, 122 (1980)

V.E.Viola, Jr., A.C.Mignerey, H.Breuer, K.L.Wolf, B.G.Glagola, W.W.Wilcke, W.U.Schroder, J.R.Huizenga, D.Hilscher, J.R.Birkelund

Possible Production of Actinide Spontaneous Fission Activities in Damped Collisions of ²⁰⁹Bi + ⁵⁶Fe

RADIOACTIVITY ^240,242,244Am, ^{234,236,238,240}Cf, ^242,244,246Fm [from ²⁰⁹Bi(⁵⁶Fe, X), E=464 MeV]; measured T_1/2 for SF.

NUCLEAR REACTIONS ²⁰⁹Bi(⁵⁶Fe, X), E=464 MeV; measured σ(fragment, Z), actinide element production σ.

doi: 10.1103/PhysRevC.22.122
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0782.

1980WI06      Phys.Rev. C21, 2019 (1980)

W.W.Wilcke, M.W.Johnson, W.U.Schroder, D.Hilscher, J.R.Birkelund, J.R.Huizenga, J.C.Browne, D.G.Perry

Actinide Muonic Atom Lifetimes Deduced from Muon-Induced Fission

NUCLEAR REACTIONS ^235,238U, ²³⁷Np, ^239,242Pu(μ^-, F), E at rest; measured delayed fission. ²³²Th, ^233,235,238U, ²³⁷Np, ^239,242Pu deduced muon capture rates, T_1/2 of muonic atoms, isotopic effects.

doi: 10.1103/PhysRevC.21.2019
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1980WI08      Phys.Rev. C22, 128 (1980)

W.W.Wilcke, J.R.Birkelund, A.D.Hoover, J.R.Huizenga, W.U.Schroder, V.E.Viola, Jr., K.L.Wolf, A.C.Mignerey

Bombarding-Energy Dependence of the ²⁰⁹Bi + ¹³⁶Xe Reaction

NUCLEAR REACTIONS ²⁰⁹Bi(¹³⁶Xe, X), E=940 MeV; measured σ(θ, E, Z); deduced correlations, interaction times, transport coefficients, sequential fission probability. Damped reaction, trajectory calculation.

doi: 10.1103/PhysRevC.22.128
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1980WI21      At.Data Nucl.Data Tables 25, 389 (1980)

W.W.Wilcke, J.R.Birkelund, H.J.Wollersheim, A.D.Hoover, J.R.Huizenga, W.U.Schroder, L.E.Tubbs

Reaction Parameters for Heavy-Ion Collisions

COMPILATION ¹²C, ⁵⁶Fe, ¹⁴⁰Ce, ¹⁹⁷Au, ¹⁶O, ²⁷Al, ⁴⁰Ca, ⁶³Cu, ⁹²Mo, ¹⁰⁸Ag, ¹⁵⁴Sm, ²⁰⁸Pb, ¹⁶⁵Ho, ¹⁸¹Ta, ²⁰⁹Bi, ²³⁸U; compiled reaction parameters for different projectiles, E=1-50 MeV/nucleon. Fresnel, droplet, rotating liquid drop models, data systematics, heavy ions.

doi: 10.1016/0092-640X(80)90010-8
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1979BR13      Phys.Rev.Lett. 43, 191 (1979)

H.Breuer, B.G.Glagola, V.E.Viola, K.L.Wolf, A.C.Mignerey, J.R.Birkelund, D.Hilscher, A.D.Hoover, J.R.Huizenga, W.U.Schroder, W.W.Wilcke

Nucleon Exchange and A/Z Equilibration in Interactions of 8.3-MeV/amu ⁵⁶Fe Ions with ⁵⁶Fe, ¹⁶⁵Ho, and ²⁰⁹Bi

NUCLEAR REACTIONS ⁵⁶Fe, ¹⁶⁵Ho, ²⁰⁹Bi(⁵⁶Fe, X), E=8.3 MeV/nucleon; measured σ for Fe-like fragments; deduced dependence of fragment A/Z ratio, A-Z variance relationships on damping.

doi: 10.1103/PhysRevLett.43.191
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1979HI01      Phys.Rev. C20, 556 (1979)

D.Hilscher, J.R.Birkelund, A.D.Hoover, W.U.Schroder, W.W.Wilcke, J.R.Huizenga, A.C.Mignerey, K.L.Wolf, H.F.Breuer, V.E.Viola

Structure in the Energy Spectra of the Fragments Produced in Damped Heavy-Ion Reactions

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, X), E=400 MeV; calculated production σ(E) for ⁴¹Ca. Statistical evaporation process for HI damped collisions.

doi: 10.1103/PhysRevC.20.556
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1979HI02      Phys.Rev. C20, 576 (1979)

D.Hilscher, J.R.Birkelund, A.D.Hoover, W.U.Schroder, W.W.Wilcke, J.R.Huizenga, A.C.Mignerey, K.L.Wolf, H.F.Breuer, V.E.Viola, Jr.

Neutron Emission in the Reaction ¹⁶⁵Ho + ⁵⁶Fe at E(lab) = 8.5 MeV/u

NUCLEAR REACTIONS ¹⁶⁵Ho(⁵⁶Fe, xn), (⁵⁶Fe, α), E=476 MeV; measured σ(E, θ, φ); deduced nuclear temperatures, neutron multiplicities, N/Z, neutron out-of-plane anisotropy, reaction mechanism.

doi: 10.1103/PhysRevC.20.576
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1978BI05      Phys.Rev.Lett. 40, 1123 (1978)

J.R.Birkelund, J.R.Huizenga, J.N.De, D.Sperber

Heavy-Ion Fusion Based on the Proximity Potential and One-Body Friction

NUCLEAR REACTIONS ²⁷Al(¹⁶O, X), ^58,60,62,64Ni, ^{112,116,120,124}Sn(³⁵Cl, X), ¹⁰⁹Ag(⁴⁰Ar, X); calculated fusion σ.

doi: 10.1103/PhysRevLett.40.1123
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1978DE40      S.Afr.J.Phys. 1, 239 (1978)

J.N.De, A.Sherman, D.Sperber, J.R.Birkelund, J.R.Huizenga

Fusion-Excitation Functions as a Test of the Radial Dependence of the Proximity Potential

NUCLEAR REACTIONS ²⁷Al(³⁵Cl, X), E(cm)=50-300 MeV; ²³²Th(⁴⁰Ar, X), E(cm)=20-55 MeV; calculated σ(fusion, E); deduced radial dependence of ion-ion potential. Proximity potential model.

1977SC29      Phys.Lett. 71B, 283 (1977)

W.U.Schroder, J.R.Huizenga, J.R.Birkelund, K.L.Wolf, V.E.Viola, Jr.

Dissipation, Mass-Exchange and the Microscopic Time Scale of Heavy-Ion Collisions

NUCLEAR REACTIONS ¹⁶⁵Ho, ²⁰⁹Bi(¹³⁶Xe, X), ¹⁶⁵Ho(⁸⁴Kr, X), ¹⁹⁷Au(⁸⁶Kr, X); calculated energy loss/exchanged nucleon.

doi: 10.1016/0370-2693(77)90216-7
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1976BI01      Phys.Rev. C13, 133 (1976)

J.R.Birkelund, J.R.Huizenga, H.Freiesleben, K.L.Wolf, J.P.Unik, V.E.Viola, Jr.

Elastic Scattering of ⁴⁰Ar and ⁸⁴Kr on ²⁰⁹Bi and ²³⁸U at 7.2 and 8.5 MeV/N

NUCLEAR REACTIONS ²⁰⁹Bi, ²³⁸U(⁴⁰Ar, ⁴⁰Ar), E=340 MeV; ²⁰⁹Bi(⁸⁴Kr, ⁸⁴Kr), E=600, 712 MeV; measured σ(θ); deduced maximum angular momenta, interaction radii, total σ. Optical, Fresnel model analysis.

doi: 10.1103/PhysRevC.13.133
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1976SC04      Phys.Rev.Lett. 36, 514 (1976)

W.U.Schroder, J.R.Birkelund, J.R.Huizenga, K.L.Wolf, J.P.Unik, V.E.Viola, Jr.

Study of the Reaction ²⁰⁹Bi + ¹³⁶Xe

NUCLEAR REACTIONS ²⁰⁹Bi(¹³⁶Xe, X), E=1130 MeV; measured σ(E(fragment mass), θ).

doi: 10.1103/PhysRevLett.36.514
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1973BA49      Nucl.Phys. A210, 355 (1973)

R.F.Barrett, J.R.Birkelund, B.J.Thomas, K.S.Lam, H.H.Thies

Systematics of Nuclear Level Density Parameters of Nuclei Deficient in One Neutron

NUCLEAR REACTIONS Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Br, Sr, Y, Zr, Nb, Mo, Ag, Cd, In, Sn, Sb, Te, I, Ba, La, Ce, Pr, Tb, Dy, Ho, Er, Tm, Ta, W, Au, Pb, Bi(γ, n), E=6-27 MeV; measured photo neutron mean energy En; deduced level density parameters. Natural targets.

doi: 10.1016/0375-9474(73)90308-4
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