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NSR database version of April 26, 2024.

Search: Author = H.Ries

Found 15 matches.

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1987LE19      Nucl.Phys. A472, 533 (1987)

A.Lepretre, R.Bergere, P.Bourgeois, P.Carlos, J.Fagot, J.L.Fallou, P.Garganne, A.Veyssiere, H.Ries, R.Goble, U.Kneissl, G.Mank, H.Stroher, W.Wilke, D.Ryckbosch, J.Jury

Absolute Photofission Cross Sections for ²³²Th and ^235,238U Measured with Monochromatic Tagged Photons (20 MeV < E(γ) < 110 MeV)

NUCLEAR REACTIONS ²³²Th, ^235,238U(γ, F), E=20-110 MeV; measured fission σ(E). ²³²Th, ^235,238U deduced fission evaporation competition, fission probabilities. Hybrid model. Parallel plate avalanche detector, monochromatic tagged photons.

doi: 10.1016/0375-9474(87)90044-3
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0491.

1985DR01      Nucl.Phys. A437, 253 (1985)

J.Drexler, R.D.Heil, K.Huber, U.Kneissl, G.Mank, R.Ratzek, H.Ries, T.Weber, W.Wilke, B.Fischer, H.Hollick

The ' Isomeric Shelf ' in the Deep Subbarrier Photofission of ²³⁸U

NUCLEAR REACTIONS ²³⁸U(γ, F), E=3.9-4.3 MeV bremsstrahlung; measured T_1/2, isomeric to prompt yield ratio. Depleted targets.

doi: 10.1016/0375-9474(85)90087-9
Citations: PlumX Metrics

1985HE21      Nucl.Instrum.Methods 239, 545 (1985)

R.D.Heil, J.Drexler, K.Huber, U.Kneissl, G.Mank, H.Ries, H.Stroher, T.Weber, W.Wilke

A Compact Time-of-Flight Spectrometer for Electrofission Studies

RADIOACTIVITY ²⁵²Cf(SF); measured fission fragment velocities, masses, energies before neutron emission.

doi: 10.1016/0168-9002(85)90034-8
Citations: PlumX Metrics

1984AH05      Phys.Lett. 146B, 303 (1984)

J.Ahrens, J.Arends, P.Bourgeois, P.Carlos, J.L.Fallou, N.Floss, P.Garganne, S.Huthmacher, U.Kneissl, G.Mank, B.Mecking, H.Ries, R.Stenz, A.Veyssiere

Measurement of the Total Cross Section for ²³⁵U and ²³⁸U Photofission in the Δ-Resonance Region

NUCLEAR REACTIONS ^235,238U(γ, F), E=120-460 MeV bremsstrahlung; measured fission σ(E). Parallel plate avalanche detector.

doi: 10.1016/0370-2693(84)91701-5
Citations: PlumX Metrics

1984DR04      Nucl.Instrum.Methods 220, 409 (1984)

J.Drexler, R.D.Fischer, R.Heil, K.Huber, U.Kneissl, G.Mank, R.Ratzek, H.Ries, H.Stroher, T.Weber, W.Wilke

Arrangements of Parallel Plate Avalanche Detectors for Electrofission and Photofission experiments

NUCLEAR REACTIONS ²³²Th(e⁺, F), (e^-, F), E=9 MeV; measured fission fragment σ(θ). Parallel plate avalanche detectors.

RADIOACTIVITY ²⁵²Cf(SF); measured fission fragment tof spectra. Parallel plate avalanche detectors.

doi: 10.1016/0167-5087(84)90303-X
Citations: PlumX Metrics

1984RI08      Phys.Rev. C29, 2346 (1984)

H.Ries, G.Mank, J.Drexler, R.Heil, K.Huber, U.Kneissl, R.Ratzek, H.Stroher, T.Weber, W.Wilke

Absolute Photofission Cross Sections for ^235,238U in the Energy Range 11.5-30 MeV

NUCLEAR REACTIONS ^238,235U(γ, F), E=11.5-30 MeV; measured absolute fission σ(E). Quasimonoenergetic photons from positron annihilation, multiple parallel plate detectors.

doi: 10.1103/PhysRevC.29.2346
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0503.

1984RI09      Phys.Lett. 139B, 254 (1984)

H.Ries, U.Kneissl, G.Mank, H.Stroher, W.Wilke, R.Bergere, P.Bourgeois, P.Carlos, J.L.Fallou, P.Garganne, A.Veyssiere, L.S.Cardman

Absolute Photofission Cross Sections of ^235,238U Measured with Tagged Photons between 40 and 105 MeV

NUCLEAR REACTIONS ^235,238U(γ, F), E=40-105 MeV; measured absolute fission σ(E). ^235,238U deduced total fission probability vs E. Tagged photon beam. Evaporation cascade model.

doi: 10.1016/0370-2693(84)91074-8
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0492.

1984ST07      Nucl.Phys. A419, 295 (1984)

H.Stroher, J.Drexler, R.Heil, K.Huber, U.Kneissl, G.Mank, R.Ratzek, H.Ries, T.Weber, W.Wilke, H.J.Maier

Fission Barriers of Preactinide Nuclei from Electrofission Experiments

NUCLEAR REACTIONS ^182,184,186W, Pt, ²⁰⁹Bi(e, F), E=25-55 MeV; measured electron induced fission σ(E); deduced fission barriers B. Natural, enriched targets. Statistical model analysis.

doi: 10.1016/0375-9474(84)90394-4
Citations: PlumX Metrics

1984WE05      Z.Phys. A315, 125 (1984)

T.Weber, J.Drexler, R.D.Heil, K.Huber, U.Kneissl, G.Mank, H.Ries, H.Stroher, W.Wilke

A New Method to Test Virtual Photon Spectra

NUCLEAR REACTIONS ²³²Th(e^-, F), E=9 MeV; ²³²Th(e⁺, F), E=16 MeV; measured fission fragment σ(θ), anisotropy.

doi: 10.1007/BF01436220
Citations: PlumX Metrics

1983DR14      Nucl.Phys. A411, 17 (1983)

J.Drexler, R.Heil, K.Huber, U.Kneissl, G.Mank, R.Ratzek, H.Ries, H.Stroher, T.Weber, W.Wilke

The Decay of Uranium Shape Isomers Investigated by Photonuclear Reactions

NUCLEAR REACTIONS ²³⁸U(γ, γ'), E=12 MeV bremsstrahlung; measured isomer T_1/2, isomeric to prompt yield ratio; deduced isomeric fission cross section. ²³⁸U deduced isomer decay branching ratio. Natural target.

doi: 10.1016/0375-9474(83)90505-5
Citations: PlumX Metrics

1982RA21      Z.Phys. A308, 63 (1982)

R.Ratzek, W.Wilke, J.Drexler, R.Fischer, R.Heil, K.Huber, U.Kneissl, H.Ries, H.Stroher, R.Stock, K.Wienhard

Photofission with Linearly Polarized Photons

NUCLEAR REACTIONS ²³²Th(polarized γ, F), (γ, F), E=10, 12 MeV bremsstrahlung; measured fission σ(fragment θ), asymmetry. ²³²Th deduced E1 excitation role in fission. Linearly polarized beam, parallel plate avalanche detectors.

doi: 10.1007/BF01415850
Citations: PlumX Metrics

1982ST05      Nucl.Phys. A378, 237 (1982)

H.Stroher, R.D.Fischer, J.Drexler, K.Huber, U.Kneissl, R.Ratzek, H.Ries, W.Wilke, H.J.Maier

Absolute Cross Sections for Electron- and Positron-Induced Fission of ²³⁸U and Tests of DWBA Virtual-Photon Spectra

NUCLEAR REACTIONS ²³⁸U(e, F), (e⁺, F), E=10-35 MeV; measured absolute σ. Natural targets.

doi: 10.1016/0375-9474(82)90590-5
Citations: PlumX Metrics

1981GU04      Nucl.Phys. A359, 397 (1981)

W.Gunther, K.Huber, U.Kneissl, H.Krieger, H.Ries, H.Stroher, W.Wilke

Yield Ratio for the Two ²⁴¹Pu Fission Isomers in the ²⁴²Pu(γ, n) Reaction

NUCLEAR REACTIONS ²⁴²Pu(γ, n), E=40-48 MeV bremsstrahlung; measured T_1/2, isomeric to prompt yield ratio. ²⁴¹Pu levels deduced isomeric ratio, J. Enriched target.

doi: 10.1016/0375-9474(81)90245-1
Citations: PlumX Metrics

1981ST12      Phys.Rev.Lett. 47, 318 (1981)

H.Stroher, R.D.Fischer, J.Drexler, K.Huber, U.Kneissl, R.Ratzek, H.Ries, W.Wilke, H.J.Maier

Investigation of the Fission Decay of the Isoscalar Giant Quadrupole Resonance in ²³⁸U by Electron- and Positron-Induced Fission

NUCLEAR REACTIONS, Fission ²³⁸U(e, F), (e⁺, F), E=10-35 MeV; measured σ(E), σ(ratio). ²³⁸U deduced no GQR fission decay. DWBA, virtual photon treatment.

doi: 10.1103/PhysRevLett.47.318
Citations: PlumX Metrics

1980GU20      Nucl.Phys. A350, 1 (1980)

W.Gunther, K.Huber, U.Kneissl, H.Krieger, H.Ries, H.Stroher, W.Wilke, H.J.Maier

Systematics of Photonuclear Yields and Cross Sections for Plutonium and Uranium Fission Isomers

NUCLEAR REACTIONS, Fission ²⁴⁰Pu, ²³⁵U(γ, xn), ²³⁹Pu(γ, 2n), ²⁴²Pu(γ, n), E=45 MeV bremsstrahlung; measured T_1/2, isomeric to prompt yield ratios. ²³⁶U, ^237,239,241Pu levels deduced σ(fission). Natural, enriched targets.

doi: 10.1016/0375-9474(80)90385-1
Citations: PlumX Metrics