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NSR database version of May 24, 2024.

Search: Author = R.P.Schmitt

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2003SC18      Yad.Fiz. 66, 1199 (2003); Phys.Atomic Nuclei 66, 1163 (2003)

R.P.Schmitt, T.Botting, G.G.Chubarian, K.L.Wolf, B.J.Hurst, H.Jabs, M.Hamelin, A.Bacak, Yu.Ts.Oganessian, M.G.Itkis, E.M.Kozulin, N.A.Kondratiev, V.S.Salamatin, I.V.Pokrovsky, F.Hanappe, E.de Goes Brennand, A.Huck, L.Stuttge, E.Liatard, J.Beene, R.Varner, M.Halbert, N.Gan

Probing Fission Time Scales with Neutrons and GDR Gamma Rays

NUCLEAR REACTIONS 176Yb, 208Pb(16O, F), E=133 MeV; 188Os, 209Bi(α, F), E=104 MeV; measured En, pre-fission neutron multiplicities, GDR associated Eγ, Ig; deduced friction coefficients, fission time scales.

doi: 10.1134/1.1586431
Citations: PlumX Metrics


2001CH50      Phys.Rev.Lett. 87, 052701 (2001)

G.G.Chubarian, M.G.Itkis, N.A.Kondratiev, E.M.Kozulin, V.V.Pashkevich, I.V.Pokrovsky, A.Ya.Rusanov, V.S.Salamatin, R.P.Schmitt

Gamma-Ray Multiplicities and Fission Modes in 208Pb(18O, f)

NUCLEAR REACTIONS 208Pb(18O, F), E=78-198 MeV; measured fission fragment yields, fission mode dependence of γ-ray multiplicity. Comparison with model predictions.

doi: 10.1103/PhysRevLett.87.052701
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2001TO07      Phys.Rev. C63, 035801 (2001)

Y.Tokimoto, H.Utsunomiya, T.Yamagata, M.Ohta, Y.-W.Lui, R.P.Schmitt, S.Typel, Y.Aoki, K.Ieki, K.Katori

Coulomb Breakup of 7Li for Nuclear Astrophysics

NUCLEAR REACTIONS 27Al, 58Ni, 64Zn, 90Zr, 120Sn, 144Sm, 169Tm, 197Au, 208Pb(7Li, tα), E=42 MeV; measured triton, α spectra, σ(θ) following resonant and nonresonant Coulomb breakup; deduced postacceleration effect. 3H(α, γ), E(cm) ≈ 0.05-0.8 MeV; deduced astrophysical S factors.

doi: 10.1103/PhysRevC.63.035801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1748.


2000PO12      Phys.Rev. C62, 014615 (2000)

I.V.Pokrovsky, M.G.Itkis, I.M.Itkis, N.A.Kondratiev, E.M.Kozulin, E.V.Prokhorova, V.S.Salamatin, V.V.Pashkevich, S.I.Mulgin, A.Ya.Rusanov, S.V.Zhdanov, G.G.Chubarian, B.J.Hurst, R.P.Schmitt, C.Agodi, G.Bellia, L.Calabretta, K.Lukashin, C.Maiolino, A.Kelic, G.Rudolf, L.Stuttge, F.Hanappe

Fission Modes in the Reaction 208Pb(18O, f)

NUCLEAR REACTIONS 208Pb(18O, F), E=78 MeV; measured fission fragments kinetic energy, mass distributions; deduced high-energy fission mode. Multicomponent analysis method.

doi: 10.1103/PhysRevC.62.014615
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1999UT03      Nucl.Phys. (Supplement) A654, 928c (1999)

H.Utsunomiya, Y.Tokimoto, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt, S.Typel, G.Baur

Excitation of Continuum States in 7Li and Their Decay by Quantum Tunneling

NUCLEAR REACTIONS 27Al, 58Ni, 64Zn, 90Zr, 120Sn, 144Sm, 197Au(7Li, tα), E=42 MeV; measured particle spectra, forward-backward asymmetry; deduced E1, E2, higher-order effects in Coulomb breakup.

doi: 10.1016/S0375-9474(00)88575-9
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1998HU11      Nucl.Phys. A636, 3 (1998)

B.Hurst, J.Boger, T.Botting, L.Cooke, D.O'Kelly, R.P.Schmitt, B.K.Srivastava, W.Turmel

Excitation Energy Deposition from Neutron Multiplicity Distributions for Reactions Induced with 30 A MEV 14N, 20Ne, 63Cu and 55 A MeV 4He

NUCLEAR REACTIONS 12C, 27Al, 58Ni, 63Cu, 92,96,100Mo, Ag, 120,124Sn, 144,154Sm, 174Yb, 197Au, 208Pb, 232Th, 238U(14N, xn), 116Sn, 150Sm(20Ne, xn), 96,100Mo, 197Au(63Cu, xn), E=30 MeV/nucleon; 116,120,124Sn, 148,150,154Sm, 174Yb, 181Ta, 232Th(α, xn), E=55 MeV/nucleon; measured neutron multiplicity distributions; deduced excitation energy deposition systematics. 4π detector. Statistical model comparisons.

doi: 10.1016/S0375-9474(98)00162-6
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1998UT01      Phys.Lett. 416B, 43 (1998)

H.Utsunomiya, Y.Tokimoto, H.Mabuchi, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Strongly-Suppressed Post-Coulomb Acceleration in Non-Resonant Breakup of 7Li

NUCLEAR REACTIONS 27Al, 58Ni, 90Zr, 120Sn, 144Sm, 197Au(7Li, tα), E=42 MeV; measured tα-coin, σ(θ, Et, Eα); deduced no evidence for fragment post-acceleration. Non-resonant breakup, Coulomb dissociation, astrophysical implications.

doi: 10.1016/S0370-2693(97)01328-2
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1998UT03      Nucl.Instrum.Methods Phys.Res. A402, 417 (1998)

H.Utsunomiya, Y.Tokimoto, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Method of Coulomb Breakup Probing Primordial 7Li Synthesis

NUCLEAR REACTIONS 90Zr(7Li, tα), E=42 MeV; measured t-, α-spectra, tα-coin; deduced astrophysical S-factors. Comparison with direct capture data.

doi: 10.1016/S0168-9002(97)00883-8
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1998UT04      J.Phys.(London) G24, 1637 (1998)

H.Utsunomiya, Y.Tokimoto, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Astrophysical Implications of Non-Resonant Break-Up of 7Li

NUCLEAR REACTIONS 90Zr, 197Au(7Li, tα), E not given; analyzed nonresonant breakup data; deduced role of post-Coulomb acceleration.

doi: 10.1088/0954-3899/24/8/044
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1997MO28      Phys.Rev.Lett. 79, 4295 (1997)

L.G.Moretto, K.X.Jing, R.Gatti, Th.Rubehn, G.J.Wozniak, R.P.Schmitt

Moretto et al. Reply:

doi: 10.1103/PhysRevLett.79.4295
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1997OK02      Phys.Lett. 393B, 301 (1997)

D.O'Kelly, T.Botting, B.Hurst, R.P.Schmitt, Y.-W.Lui, Y.Hirabayashi, S.Okabe, Y.Sakuragi, H.Utsunomiya, T.Yamagata, M.Ohta

Breakup of 30 MeV/u-16O in Nuclear and Coulomb Fields of 120Sn and 208Pb Nuclei

NUCLEAR REACTIONS 120Sn, 208Pb(16O, α12C), E=30 MeV/nucleon; measured α12C-coin, σ(θ, θ(α12C)); deduced nuclear, Coulomb-breakup interference role. Coupled channels approach, orthogonality condition model.

doi: 10.1016/S0370-2693(96)01636-X
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1996UT01      Nucl.Instrum.Methods Phys.Res. A371, 514 (1996)

H.Utsunomiya, Y.-W.Lui, D.H.Youngblood, D.O'Kelly, R.P.Schmitt

Identification of Heavy Ions in Magnetic Spectrograph Measurements using a Plastic Phoswich

NUCLEAR REACTIONS 90Zr(40Ar, X), 208Pb(16O, X), E=30 MeV/nucleon; measured heavy-ion production associated light output spectra, scatter plots. Magnetic spectrograph with plastic phoswich detectors.

doi: 10.1016/0168-9002(95)00828-4
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1995LO02      Nucl.Phys. A581, 373 (1995)

Y.Lou, M.Gonin, R.Wada, K.Hagel, J.Li, B.Xiao, M.Gui, D.Utley, R.Tezkratt, L.Cooke, T.Botting, B.Hurst, D.O'Kelly, G.Mouchaty, R.P.Schmitt, W.Turmel, J.B.Natowitz, D.Fabris, G.Nebbia, G.Viesti, J.Ruiz, R.Burch, F.Gramegna, M.Poggi, G.Prete, M.E.Brandan, A.Menchaca-Rocha

Light-Particle Evaporation as a Function of Neutron Excess for Medium-Mass Compound Nuclei with E(x) ≈ 2 MeV/u

NUCLEAR REACTIONS 92,100Mo(63Cu, F), E=10 MeV/nucleon; 144,148,154Sm(20Ne, F), E=20 MeV/nucleon; measured fission (fragment)α-coin, proton, neutron, α-multiplicities, mass, total kinetic energy, linear momentum transfer distributions; deduced dynamic fission role. Statistical model analysis.

doi: 10.1016/0375-9474(94)00482-3
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1995MO33      Phys.Rev.Lett. 75, 4186 (1995)

L.G.Moretto, K.X.Jing, R.Gatti, G.J.Wozniak, R.P.Schmitt

Scaling Laws, Shell Effects, and Transient Times in Fission Probabilities

NUCLEAR STRUCTURE 186,187,188Os, 201Tl, 203,204,205,206,208Pb, 208,210,211,212Po, 213At; analyzed (α, F) reaction fission σ(E) data; deduced effective barriers, shell effects, scaling laws related features.

doi: 10.1103/PhysRevLett.75.4186
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1995MU21      Phys.Rev. C52, 3483 (1995)

A.M.Mukhamedzhanov, R.P.Schmitt, R.E.Tribble, A.Sattarov

Astrophysical Factor for the Radiative Capture Reaction α + d → 6Li + γ

NUCLEAR REACTIONS, ICPND 2H(α, γ), E(cm) ≤ 600 keV; calculated astrophysical S-factor vs E; deduced reaction rate. Both E1, E2 contributions included.

doi: 10.1103/PhysRevC.52.3483
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1995SC38      Nucl.Phys. A592, 130 (1995)

R.P.Schmitt, L.Cooke, H.Dejbakhsh, D.R.Haenni, T.Shutt, B.K.Srivastava, H.Utsunomiya

K-Equilibration and Spin Enhancement Effects in 120 MeV 16O- and 214 MeV 32S-Induced Fission

NUCLEAR REACTIONS 174Yb, 208Pb, 209Bi, 232Th, 238U(16O, F), E=120 MeV; 208Pb, 232Th(32S, F), E=214 MeV; measured γ-multiplicity following fission, σ(fragment θ) in some cases; deduced collective modes excitation, K-equilibration, spin enhancement effects related features.

doi: 10.1016/0375-9474(95)00178-4
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1995SC55      Nucl.Instrum.Methods Phys.Res. A354, 487 (1995)

R.P.Schmitt, L.Cooke, G.Derrig, D.Fabris, B.Hurst, J.B.Natowitz, G.Nebbia, D.O'Kelly, B.K.Srivastava, W.Turmel, D.Utley, H.Utsunomiya, R.Wada

A Flexible 4π Neutron Detector for In-Beam Studies: The Texas A and M neutron ball

RADIOACTIVITY 252Cf(SF); measured neutron multiplicity distribution; deduced detector response. 4π ' neutron ball '. Monte Carlo simulations.

doi: 10.1016/0168-9002(94)01029-3
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1994CH17      Nucl.Phys. A569, 93c (1994)

R.K.Choudhury, K.L.Wolf, H.Jabs, J.Schoemaker, J.B.Natowitz, K.Hagel, Y.Lou, R.Wada, R.P.Schmitt, W.Turmel, H.Xu

Giant Dipole Resonance Gamma Decay of 142Nd Nuclei Produced by 16O + 126Te and 22Ne + 120Sn Reactions at E(*) = 150 MeV

NUCLEAR REACTIONS 126Te(16O, X), E=179 MeV; 120Sn(22Ne, X), E=193 MeV; measured particle, γ-spectra. 142Nd deduced GDR parameters, no entrance channel effects.

doi: 10.1016/0375-9474(94)90099-X
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1163.


1991DE14      Phys.Rev. C44, 119 (1991)

H.Dejbakhsh, G.Mouchaty, R.P.Schmitt

Level Structure of 101Tc Investigated by Means of Massive Transfer Reactions

NUCLEAR REACTIONS 100Mo(7Li, 2nα), E=49 MeV; measured (particle)γ-, γγ(particle)-coin, Iγ, Eγ. 101Tc deduced levels, J, π, band structure. Model comparison.

NUCLEAR STRUCTURE 101Tc; calculated levels. Cranking shell model, interacting boson-fermion model.

doi: 10.1103/PhysRevC.44.119
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1990GO24      Phys.Rev. C42, 2125 (1990)

M.Gonin, L.Cooke, K.Hagel, Y.Lou, J.B.Natowitz, R.P.Schmitt, S.Shlomo, B.Srivastava, W.Turmel, H.Utsunomiya, R.Wada, G.Nardelli, G.Nebbia, G.Viesti, R.Zanon, B.Fornal, G.Prete, K.Niita, S.Hannuschke, P.Gonthier, B.Wilkins

Dynamical Effects on the De-Excitation of Hot Nuclei with A ≈ 160

NUCLEAR REACTIONS 100Mo(60Ni, F), E=550, 655 MeV; measured charged particle, neutron muliplicities, evaporation residues velocities, fission fragments energies; deduced hot nuclear properties.

doi: 10.1103/PhysRevC.42.2125
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1990NI04      Phys.Rev. C41, 2118 (1990)

N.G.Nicolis, D.G.Sarantites, L.A.Adler, F.A.Dilmanian, K.Honkanen, Z.Majka, L.G.Sobotka, Z.Li, T.M.Semkow, J.R.Beene, M.L.Halbert, D.C.Hensley, J.B.Natowitz, R.P.Schmitt, D.Fabris, G.Nebbia, G.Mouchaty

Deformation Effects in the Compound Nucleus Decay using the Spin-Alignment Method

NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; 50Ti(64Ni, X), E=250 MeV; 74Ge(64Ni, X), E=270 MeV; 100Mo(64Ni, X), E=270 MeV; 150Nd(20Ne, X), E=176.6 MeV; measured σ(θα); deduced statistical model parameters. Spin-alignment method.

doi: 10.1103/PhysRevC.41.2118
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1990SC05      Z.Phys. A335, 49 (1990)

R.P.Schmitt, B.K.Srivastava

Defining a Reaction Plane in Particle-Fission Correlation Measurements

NUCLEAR REACTIONS 124Sn(37Cl, F), E=200, 250 MeV; 141Pr(28Si, X), E=318 MeV; calculated α(fragment)-correlation anisotropies following fission. Spherical emitter model.


1990SC33      Phys.Rev.Lett. 65, 2080 (1990)

R.P.Schmitt

Comment on Nonstatistical Excited-State Populations

doi: 10.1103/PhysRevLett.65.2080
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1990UT02      Nucl.Phys. A511, 379 (1990)

H.Utsunomiya, Y.-W.Lui, L.Cooke, H.Dejbakhsh, D.R.Haenni, P.Heimberg, A.Ray, B.K.Srivastava, R.P.Schmitt, T.Udagawa

Continuous Distribution of αt Relative Kinetic Energies in 7Li Breakup Reactions

NUCLEAR REACTIONS 208Pb(7Li, 7Li), (7Li, 7Li'), E=63 MeV; measured σ(θ). 208Pb, 144Sm, 120Sn, 58Ni(7Li, αt), E=63 MeV; measured σ(Eα, Et, θ); deduced astrophysical implications. Enriched targets. Enge split-pole spectrograph. DWBA analysis.

doi: 10.1016/0375-9474(90)90165-I
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1990UT03      Phys.Rev.Lett. 65, 847 (1990); Erratum Phys.Rev.Lett. 69, 863 (1992)

H.Utsunomiya, Y.-W.Lui, D.R.Haenni, H.Dejbakhsh, L.Cooke, B.K.Srivastava, W.Turmel, D.O'Kelly, R.P.Schmitt, D.Shapira, J.Gomez del Campo, A.Ray, T.Udagawa

Breakup of 7Li Near the α-t Threshold and a Possible Probe of Radiative-Capture Processes

NUCLEAR REACTIONS, ICPND 27Al, 58Ni, 120Sn, 144Sm, 208Pb(7Li, tα), E=42, 63 MeV; measured σ(θ(7Li)) vs E(αt); deduced B(λ), astrophysical S-factor vs E.

doi: 10.1103/PhysRevLett.65.847
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1989GO02      Phys.Lett. 217B, 406 (1989)

M.Gonin, L.Cooke, K.Hagel, Y.Lou, J.B.Natowitz, R.P.Schmitt, B.Srivastava, W.Turmel, H.Utsunomiya, R.Wada, B.Fornal, G.Nardelli, G.Nebbia, G.Viesti, R.Zanon, G.Prete, P.Gonthier, B.Wilkins

Determination of the Temperatures of Hot Nuclei from ' First Chance ' Emission Spectra

NUCLEAR REACTIONS 100Mo(60Ni, X), E=655, 550 MeV; measured light charged particle, neutron spectra. 160Yb deduced hot nucleus temperature, other parameters.

doi: 10.1016/0370-2693(89)90069-5
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1989GO11      Nucl.Phys. A495, 139c (1989)

M.Gonin, L.Cooke, B.Fornal, P.Gonthier, M.Gui, Y.Lou, J.B.Natowitz, G.Nardelli, G.Nebbia, G.Prete, R.P.Schmitt, B.Srivastava, W.Turmel, D.Utley, H.Utsunomiya, G.Viesti, R.Wada, B.Wilkins, R.Zanon

Thermal Properties and Dynamics of Hot Nuclei

NUCLEAR REACTIONS 100Mo(60Ni, X), E=655 MeV; calculated evaporated particle temperatures, α-, d-, p-, n-spectra. Ag(32S, X), (16O, X), E=30 MeV/nucleon; 154Sm(14N, X), E=19, 35 MeV/nucleon; calculated α-particle multiplicities.

doi: 10.1016/0375-9474(89)90314-X
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1989UT01      Nucl.Instrum.Methods Phys.Res. A278, 744 (1989)

H.Utsunomiya, Y.-W.Lui, R.P.Schmitt

The Particle-Particle Correlation Technique with a Broad Range Magnetic Spectrograph and Its Applications

NUCLEAR REACTIONS 208Pb(16O, α12C), E=30 MeV/nucleon; 2H(p, p), E=22 MeV; measured (particle)(particle)-correlation. New correlation technique with broad range magnetic spectrograph.

doi: 10.1016/0168-9002(89)91198-4
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1988DE04      Phys.Rev. C37, 621 (1988)

H.Dejbakhsh, R.P.Schmitt, G.Mouchaty

Collective and Single Particle Structure in 103Rh

NUCLEAR REACTIONS 7Li(100Mo, 4n), E=45 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, σ(Eγ, E). 103Rh deduced levels, J, π. Ge(Li) detector.

NUCLEAR STRUCTURE 103Rh; calculated levels, B(E2). Symmetric rotor plus particle, generalized particle-asymmetric rotor, interacting boson models, backbending frequency, alignment, cranked shell model.

doi: 10.1103/PhysRevC.37.621
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1988HA32      Nucl.Phys. A486, 429 (1988)

K.Hagel, D.Fabris, P.Gonthier, H.Ho, Y.Lou, Z.Majka, G.Mouchaty, M.N.Namboodiri, J.B.Natowitz, G.Nebbia, R.P.Schmitt, G.Viesti, R.Wada, B.Wilkins

Production and Characterization of Hot Nuclei in the Reactions of 19 and 35 MeV/u 14N with 145Sm

NUCLEAR REACTIONS 154Sm(14N, F), (14N, αX), E=261, 490 MeV; measured fission fragment σ(θ(folding)), σ(fragment θ), mass distribution, σ(θ(α), E(θ)), α(fragment)-coin; deduced hot nuclear properties.

doi: 10.1016/0375-9474(88)90245-X
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1988SC15      Nucl.Phys. A487, 370 (1988)

R.P.Schmitt, D.R.Haenni, L.Cooke, H.Dejbakhsh, G.Mouchaty, T.Shutt, H.Utsunomiya

Probing the Tilting Mode in Fission with γ-Ray Multiplicity Techniques

NUCLEAR REACTIONS 206Pb, 209Bi, 232Th, 238U(α, F), E=43 MeV; measured fission fragment σ(θ), γ-ray multiplicities. Statistical model comparisons.

doi: 10.1016/0375-9474(88)90619-7
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1460.


1988UT01      Phys.Lett. 211B, 24 (1988)

H.Utsunomiya, R.P.Schmitt, Y.-W.Lui, D.R.Haenni, H.Dejbakhsh, L.Cooke, P.Heimberg, A.Ray, T.Tamura, T.Udagawa

Observation of α-t Continuum States with Relative Energies of 0-2 MeV in 7Li Breakup Reactions

NUCLEAR REACTIONS 208Pb, 144Sm, 120Sn, 58Ni(7Li, tα), E=63 MeV; measured αt-coin, σ(θ, θ(αt)) vs E(αt); deduced αt-continuum states. 208Pb, 120Sn(7Li, 7Li'), E=63 MeV; measured σ(θ) following Coulomb excitation.

doi: 10.1016/0370-2693(88)90800-3
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1988UT02      Nucl.Phys. A487, 162 (1988)

H.Utsunomiya, R.P.Schmitt

Quasi-Free Stripping Reactions - Extended Serber Model (II)

NUCLEAR REACTIONS 197Au(22Ne, 19F), (22Ne, 16O), (22Ne, 15O), E=428 MeV; calculated σ(θ, E(ejectile)). Extended Serber model.

doi: 10.1016/0375-9474(88)90134-0
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1987MA01      Phys.Rev.Lett. 58, 322 (1987)

Z.Majka, D.G.Sarantites, L.G.Sobotka, K.Honkanen, E.L.Dines, L.A.Adler, Li Ze, M.L.Halbert, J.R.Beene, D.C.Hensley, R.P.Schmitt, G.Nebbia

Nuclear Shapes from Alpha-Gamma-Ray Angular Correlations

NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; 150Nd(20Ne, X), E=177 MeV; measured γα-coin, Eα, αγ(θ). 110Sn, 170Yb deduced shapes. ΔE-E telescopes, spin spectrometer.

doi: 10.1103/PhysRevLett.58.322
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1987NA01      Phys.Rev. C35, 149 (1987)

M.N.Namboodiri, R.K.Choudhury, L.Adler, J.D.Bronson, D.Fabris, U.Garg, P.L.Gonthier, K.Hagel, D.R.Haenni, Y.W.Lui, Z.Majka, G.Mouchaty, T.Murakami, J.B.Natowitz, G.Nebbia, R.P.Schmitt, S.Simon, J.P.Sullivan, D.H.Youngblood

Linear Momentum and Angular Momentum Transfer in the Reactions of 16O with 154Sm

NUCLEAR REACTIONS 154Sm(16O, X), E=180, 310 MeV; measured (ejectile)γ-, (residue)γ-coin, σ(fragment θ, E), < Eγ > vs fragment for X=6,7Li, 7,9,10Be, 10,11B, 11,12,13,14C, 13,14,15N, 15,16,17O; deduced angular, linear momentum transfer correlation.

doi: 10.1103/PhysRevC.35.149
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1987SC17      Phys.Lett. 192B, 44 (1987)

R.P.Schmitt, H.Dejbakhsh, D.R.Haenni, G.Mouchaty, T.Shutt, M.Tirion

Exploring the K-Distribution in Fission

NUCLEAR REACTIONS 206Pb, 209Bi, 232Th, 238U(α, F), E=42.9 MeV; measured fission fragment σ(θ), γ multiplicity vs θ(fragment); deduced fragment spin angle dependence. Transition state model.

doi: 10.1016/0370-2693(87)91139-7
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1987SO13      Nucl.Phys. A471, 131c (1987)

L.G.Sobotka, D.G.Sarantites, Ze Li, E.L.Dines, M.L.Halbert, D.C.Hensley, R.P.Schmitt, Z.Majka, G.Nebbia, H.C.Griffin, A.J.Sierk

The Angular Momentum Dependence of Complex Fragment Emission

NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; measured σ(fragment θ), γ(fragment)-coin, γ-multiplicity; deduced fragment emission angular momentum dependence.

doi: 10.1016/0375-9474(87)90247-8
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1987SO15      Phys.Rev. C36, 2713 (1987)

L.G.Sobotka, D.G.Sarantites, Ze Li, E.L.Dines, M.L.Halbert, D.C.Hensley, J.C.Lisle, R.P.Schmitt, Z.Majka, G.Nebbia, H.C.Griffin, A.J.Sierk

Angular Momentum Dependence of Complex Fragment Emission

NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; measured σ(fragment θ), (γ-multiplicity)(X)-coin; deduced angular momentum in kinetic energy partition features.

doi: 10.1103/PhysRevC.36.2713
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1986HA09      Phys.Rev. C33, 1543 (1986)

D.R.Haenni, H.Dejbakhsh, R.P.Schmitt, G.Mouchaty

Evidence for h11/2 Neutron Alignment in Band Crossings for the Transitional Mass 100 Nuclei

NUCLEAR REACTIONS 100Mo(7Li, xnypzα), E=45 MeV; measured Eγ, Iγ, γ(θ), γγ-, (particle)γ-, (particle)γγ-coin. 101,102,103,104Ru, 101Tc, 103Rh deduced levels, J, π, γ-branching, band structure.

doi: 10.1103/PhysRevC.33.1543
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1986NE03      Phys.Lett. 176B, 20 (1986)

G.Nebbia, K.Hagel, D.Fabris, Z.Majka, J.B.Natowitz, R.P.Schmitt, B.Sterling, G.Mouchaty, G.Berkowitz, K.Strozewski, G.Viesti, P.I.Gonthier, B.Wilkins, M.N.Namboodiri, H.Ho

Temperatures, Barriers, and Level Densities of Highly Excited Nuclei with A ≈ 160

NUCLEAR REACTIONS 154Sm(14N, αX), E=261, 490 MeV; measured σ(θ(α), fragment E), σ(fragment)-, αγ-coin, γ multiplicities; deduced heavy residue temperatures, barriers, level density parameters. Tof, Si, NaI detectors.

doi: 10.1016/0370-2693(86)90917-2
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1985SC12      Z.Phys. A321, 411 (1985)

R.P.Schmitt, G.Mouchaty, D.R.Haenni, M.Tirion

Angular Momentum Bearing Modes and Nuclear Structure Effects in 12C-Induced Fission

NUCLEAR REACTIONS 174Yb, 197Au, 209Bi(12C, F), E=100 MeV; 154Sm, 174Yb, 197Au, 209Bi(12C, F), E=180 MeV; measured average γ multiplicity; deduced fission fragment angular momenta. Statistical model comparison.

doi: 10.1007/BF01411972
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1984MO10      Z.Phys. A316, 285 (1984)

G.Mouchaty, D.R.Haenni, S.Nath, U.Garg, R.P.Schmitt

Angular Momentum Alignment in the Reaction 154Sm + 214 MeV 32S

NUCLEAR REACTIONS 154Sm(32S, X), E=214 MeV; measured (particle)γ-, (particle)γγ-coin, continuum γ-multiplicities, γ(θ), fragment spin alignment probability vs total kinetic energy loss; deduced target-like fragment stretched E2 transition characteristics.

doi: 10.1007/BF01439901
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1984SC31      Nucl.Phys. A427, 614 (1984)

R.P.Schmitt, G.Mouchaty, D.R.Haenni

Angular Momentum Transfer in 12C-, 20Ne- and 40Ar-Induced Fission

NUCLEAR REACTIONS 174Yb, 182W, 197Au(12C, F), E=140 MeV; 154Sm, 174Yb, 197Au(20Ne, F), E=164 MeV; Ag, 154Sm(40Ar, F), E=240 MeV; measured fission fragment mass, energy distributions, γ-multiplicities. Statistical model.

doi: 10.1016/0375-9474(84)90233-1
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1983SA10      Nucl.Phys. A400, 435c (1983)

R.C.Sarantites, M.Jaaskelainen, F.A.Dilmanian, H.Puchta, R.Woodward, J.R.Beene, D.C.Hensley, M.L.Halbert, J.Hattula, J.H.Barker, R.Novotny, L.Adler, R.K.Choudhury, M.N.Namboodiri, R.P.Schmitt, J.B.Natowitz

Research Highlights with the Spin Spectrometer

NUCLEAR REACTIONS 146Nd(20Ne, 8n), E=136 MeV; 146Nd(20Ne, 6n), (20Ne, 7n), E=136, 149 MeV; 144Nd(20Ne, 6n), (20Ne, 7n), 146Nd(20Ne, 8n), E=149 MeV; measured continuum γ-spectra, γ-multiplicities; deduced fusion reaction, entry state energy, angular momentum dependences. 160,158,159Yb deduced effective moment of inertia vs spin, entry line energy vs γ-multiplicity, localized stretched dipole transition. 157,161Yb deduced localized stretched dipole transition.

doi: 10.1016/0375-9474(83)90448-7
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1983SC27      Phys.Lett. 127B, 327 (1983)

R.P.Schmitt, G.Mouchaty, D.R.Haenni, P.Bogucki

Possible Evidence for the Statistical Excitation of Collective Modes in Heavy Ion Induced Fission

NUCLEAR REACTIONS 154Sm(40Ar, F), E=240 MeV; 182W(12C, F), E=140 MeV; measured γ-multiplicity vs fission fragment mass; deduced average total fragment spin vs mass, possible statistical collective mode excitation. Two-sphere model, thermal excitation mechanism.

doi: 10.1016/0370-2693(83)91010-9
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1983WO07      Nucl.Phys. A402, 322 (1983)

G.J.Wozniak, G.J.Mathews, R.P.Schmitt, R.Regimbart, H.Hubel, R.M.Diamond, L.G.Moretto

A Study of Charge, Energy and Angular Momentum Transfer in the 56Fe + 197Au and 56Fe + 107,109Ag Reactions at 7.2 and 8.3 MeV/Nucleon

NUCLEAR REACTIONS Ag, 197Au(56Fe, X), E=401, 460, 470 MeV; measured σ(fragment E, Z, θ), γ-ray multiplicity for 13 ≤ Z ≤ 39. Diffusion model.

doi: 10.1016/0375-9474(83)90502-X
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1982DI16      Phys.Rev.Lett. 49, 1909 (1982)

F.A.Dilmanian, D.G.Sarantites, M.Jaaskelainen, H.Puchta, R.Woodward, J.R.Beene, D.C.Hensley, M.L.Halbert, R.Novotny, L.Adler, R.K.Choudhury, M.N.Namboodiri, R.P.Schmitt, J.B.Natowitz

Alpha-Particle Angular Distributions with Respect to Spin Direction

NUCLEAR REACTIONS 150Nd(20Ne, xα), E=176 MeV; measured σ(θ, Eα) vs γ-multiplicity, evaporation residue spin direction; deduced α-emitting nucleus deformation characteristics.

doi: 10.1103/PhysRevLett.49.1909
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1982HA13      Phys.Rev. C25, 1699 (1982)

D.R.Haenni, T.T.Sugihara, R.P.Schmitt, G.Mouchaty, U.Garg

In-Beam Spectroscopy of Neutron-Rich Nuclei: New application of massive-transfer reactions

NUCLEAR REACTIONS, ICPND 100Mo(7Li, 2np), (7Li, nd), (7Li, t), 154Sm(7Li, 4np), (7Li, 3nd), (7Li, 2nt), E=48 MeV; measured Eγ, Iγ, γγ-, γ(particle)-coin. 100Mo(7Li, 2np), (7Li, 3np), (7Li, 4np), (7Li, nd), (7Li, 2nd), (7Li, 3nd), (7Li, t), (7Li, nt), (7Li, 2nt), E=48 MeV; measured yield vs excitation energy. 104Ru, 156Gd deduced levels.

doi: 10.1103/PhysRevC.25.1699
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1982MA01      Phys.Rev. C25, 300 (1982)

G.J.Mathews, J.B.Moulton, G.J.Wozniak, B.Cauvin, R.P.Schmitt, J.S.Sventek, L.G.Moretto

20Ne-Induced Reactions with Cu and 197Au at 8.6 and 12.6 MeV/Nucleon

NUCLEAR REACTIONS Cu, 197Au(20Ne, X), E=170, 252 MeV; measured σ(fragment θ, E, Z). Diffusion model.

doi: 10.1103/PhysRevC.25.300
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1982SC10      Nucl.Phys. A379, 313 (1982)

R.P.Schmitt, A.J.Pacheco

Equilibrium Treatment of Spin-Depolarizing Modes in Mass Asymmetric Heavy-Ion Systems

NUCLEAR REACTIONS, Fission 197Au(Kr, F), E=600 MeV; calculated σ(fragment θ), σ(fragment φ), sequential fission. Two sphere model, spin depolarizing mode thermal excitation.

doi: 10.1016/0375-9474(82)90395-5
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1981NA09      Phys.Rev.Lett. 47, 1114 (1981)

J.B.Natowitz, M.N.Namboodiri, L.Adler, R.P.Schmitt, R.L.Watson, S.Simon, M.Berlanger, R.Choudhury

Particle Emission at a 20Ne Projectile Velocity Comparable to the Fermi Velocity

NUCLEAR REACTIONS Ta, Ag, Ni(20Ne, p), (20Ne, d), (20Ne, 3He), (20Ne, α), E=60 MeV/nucleon; measured σ(θ, Ep), σ(θ, Ed), σ(θ, Et), σ(θ, E(3He)), σ(θ, Eα); deduced statistical projectile fragmentation dominance.

doi: 10.1103/PhysRevLett.47.1114
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1981SC03      Phys.Rev.Lett. 46, 522 (1981)

R.P.Schmitt, G.J.Wozniak, G.U.Rattazzi, G.J.Mathews, R.Regimbart, L.G.Moretto

Fast-Particle Emission in the Deep-Inelastic Reaction Cu + 20Ne at 12.6 MeV/nucleon

NUCLEAR REACTIONS Cu(20Ne, pX), E=252 MeV; measured p(fragment)(θ), σ(Ep, θp, fragment θ). Collinear geometry. Evaporation calculations, thermal fluctuation in two fragment excitation energy.

doi: 10.1103/PhysRevLett.46.522
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1980MO02      Phys.Rev. C21, 204 (1980)

L.C.Moretto, R.P.Schmitt

Equilibrium Statistical Treatment of Angular Momenta Associated with Collective Modes in Fission and Heavy-Ion Reactions

NUCLEAR REACTIONS 197Au(40Ar, X), (40Ar, F), E=288 MeV; 197Au(86Kr, X), (86Kr, F), E=600 MeV; calculated mass asymmetry, collective rotational mode effect on fragment spins, angular momentum fractionation. Statistical equilibrium model.

doi: 10.1103/PhysRevC.21.204
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1979AG06      Phys.Rev.Lett. 43, 1778 (1979)

P.Aguer, R.P.Schmitt, G.J.Wozniak, D.Habs, R.M.Diamond, C.Ellegaard, D.L.Hillis, C.C.Hsu, G.J.Mathews, L.G.Moretto, G.U.Rattazzi, C.P.Roulet, F.S.Stephens

Fragment Spin Orientation in Deep-Inelastic Reactions from Anisotropy Measurements of Continuum γ Rays

NUCLEAR REACTIONS 197Au(136Xe, X), E=1064 MeV; measured (fragment)γ-coin; deduced depolarization of fragment angular momentum during deep-inelastic collisions. Statistical excitation, various depolarizing modes.

doi: 10.1103/PhysRevLett.43.1778
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1979MA15      Z.Phys. A290, 407 (1979)

G.J.Mathews, L.G.Sobotka, G.J.Wozniak, R.Regimbart, R.P.Schmitt, G.U.Rattazzi, L.G.Moretto

A Scenario for the 220-MeV 40Ar + 238U Reaction

NUCLEAR REACTIONS 238U(40Ar, X), E=220 MeV; measured fragment, (fragment)(fragment)-coin, charge distribution; deduced reaction mechanism.

doi: 10.1007/BF01408404
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1978AL02      Phys.Rev.Lett. 40, 622 (1978)

M.M.Aleonard, G.J.Wozniak, P.Glassel, M.A.Deleplanque, R.M.Diamond, L.G.Moretto, R.P.Schmitt, F.S.Stephens

Evidence for Angular Momentum Fractionation in 86Kr-Induced Reactions On 107,109Ag, 165Ho, and 197Au

NUCLEAR REACTIONS 107,109Ag, 165Ho, 197Au(86Kr, X), E=618 MeV; measured γ-multiplicities as function of fragment (Z).

doi: 10.1103/PhysRevLett.40.622
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1978CA01      Nucl.Phys. A294, 225 (1978)

B.Cauvin, R.P.Schmitt, G.J.Wozniak, P.Glassel, P.Russo, R.C.Jared, J.B.Moulton, L.G.Moretto

Transitional Features Observed in the Charge and Angular Distributions of Deeply Inelastic Fragments Produced in the Reaction 181Ta + 620 MeV 86Kr

NUCLEAR REACTIONS 181Ta(86Kr, X), E=620 MeV; measured σ(E, θ, Z), 13 ≤ Z ≤ 49; deduced charge diffusion constant, T1/2 of reaction intermediate.

doi: 10.1016/0375-9474(78)90406-2
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1978CA09      Nucl.Phys. A301, 511 (1978)

B.Cauvin, R.C.Jared, P.Russon, R.P.Schmitt, R.Babinet, L.G.Moretto

Binary Aspects and Particle Multiplicities of the Fragments from (nat)Ag + 340 MeV 40Ar Deep Inelastic Collisions

NUCLEAR REACTIONS Ag(40Ar, X), E=340 MeV; measured binary events 10 ≤ Z ≤ 32; deduced masses of fragments before evaporation, mass loss due to evaporation.

doi: 10.1016/0375-9474(78)90065-9
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1978RE07      Phys.Rev.Lett. 41, 1355 (1978)

R.Regimbart, A.N.Behkami, G.J.Wozniak, R.P.Schmitt, J.S.Sventek, L.G.Moretto

γ-Ray Multiplicities from a Diffusion Model Incorporating One-Body Dissipation

NUCLEAR REACTIONS 107,109Ag, 165Ho, 197Au(86Kr, X), E=618 MeV; calculated σ(Z), total kinetic energy.

doi: 10.1103/PhysRevLett.41.1355
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1978SC20      Phys.Rev.Lett. 41, 1152 (1978)

R.P.Schmitt, G.Bizard, G.J.Wozniak, L.G.Moretto

Evidence for Energy Thermalization in Deep-Inelastic Processes: 63Cu + 20Ne at 7.9, 12.6, and 17.2 MeV/Nucleon

NUCLEAR REACTIONS 63Cu(20Ne, X), E=158, 252, 343 MeV; measured σ(Z), light charged particles; deduced evidence for energy thermalization.

doi: 10.1103/PhysRevLett.41.1152
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1978WO06      Nucl.Phys. A298, 169 (1978)

G.J.Wozniak, R.P.Schmitt, P.Glassel, L.G.Moretto

A Study of Diffusion Phenomena in the Rare Earth Region: The Reaction 159Tb + 620 MeV 86Kr

NUCLEAR REACTIONS 159Tb(86Kr, X), E=620 MeV; measured σ(E, Z, θ), Z=20-48; deduced charge diffusion constants, L-dependent T1/2 of intermediate complex. 107,109Ag(86Kr, X), E=620 MeV; deduced L-dependent T1/2 of intermediate complex.

doi: 10.1016/0375-9474(78)90014-3
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1978WO07      Phys.Rev.Lett. 40, 1436 (1978)

G.J.Wozniak, R.P.Schmitt, P.Glassel, R.C.Jared, G.Bizard, L.G.Moretto

Evidence for Angular Momentum Depolarization and for Enhanced Sequential Fission in the Reaction 197Au(86Kr, Z3f)

NUCLEAR REACTIONS 197Au(86Kr, F), E=618 MeV; measured light, heavy fragment distribution; deduced reaction mechanism.

doi: 10.1103/PhysRevLett.40.1436
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1977MA26      Z.Phys. A283, 247 (1977)

G.J.Mathews, G.J.Wozniak, R.P.Schmitt, L.G.Moretto

Evidence for the Characterization of Heavy-Ion Reactions by the Ratio E/B

NUCLEAR REACTIONS 108Ag(40Ar, X), E=170 MeV; measured σ(Z, θ). 108Ag(86Kr, X), E=620 MeV; 197Au(86Kr, X), E=620 MeV; analyzed data; deduced characterization of HI reactions by center-of-mass kinetic energy, Coulomb barrier ratio.

doi: 10.1007/BF01407204
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1977RU02      Phys.Lett. 67B, 155 (1977)

P.Russo, R.P.Schmitt, G.J.Wozniak, B.Cauvin, P.Glassel, R.C.Jared, L.G.Moretto

Charge and Angular Distributions and Secondary Fission of Deep Inelastic Products from the Reaction 197Au + 979 MeV 136Xe

doi: 10.1016/0370-2693(77)90090-9
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1977RU03      Nucl.Phys. A281, 509 (1977)

P.Russo, R.P.Schmitt, G.J.Wozniak, R.C.Jared, P.Glassel, B.Cauvin, J.S.Sventek, L.G.Moretto

Evidence for Diffusive Relaxation Along the Mass Asymmetry Coordinate in the Reaction 197Au + 620 MeV 86Kr

NUCLEAR REACTIONS 197Au(86Kr, F), E(lab)=620 MeV; measured σ(E, Z, θ), for 14 ≤ Z ≤ 55; deduced charge diffusion constant, T1/2 of intermediate complex.

doi: 10.1016/0375-9474(77)90512-7
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1977SC06      Nucl.Phys. A279, 141 (1977)

R.P.Schmitt, P.Russo, R.Babinet, R.Jared, L.G.Moretto

Nuclear Relaxation Phenomena, Diffusion and Orbiting in the Reaction 107,109Ag + 84,86Kr at 7.2 MeV/Nucleon

NUCLEAR REACTIONS 107,109Ag(84Kr, X), (86Kr, X), E=606, 620 MeV; measured σ(E, θ, Z), Z=9-50.

doi: 10.1016/0375-9474(77)90426-2
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