Nuclear Science References (NSR)

NSR Query Results

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NSR database version of April 26, 2024.

Search: Author = H.Ullrich

Found 49 matches.

2001AN39 Fizika(Zagreb) B10, 279 (2001)

D.Androic, G.Backenstoss, D.Bosnar, T.Dooling, P.A.M.Gram, N.K.Gregory, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, A.O.Mateos, K.Michaelian, T.Petkovic, M.Planinic, R.P.Redwine, D.Rowntree, N.Simicevic, R.Trezeciak, H.Ullrich, H.J.Weyer, M.Wildi, K.E.Wilson

Multinucleon Emission following the Pion Absorption in N, Ar and Xe

NUCLEAR REACTIONS N, Ar, Xe(π⁺, xnyp), E=118, 162, 239 MeV; measured total pion absorption σ, partial yields from several multinucleon emission channels.

2000PL03 Phys.Rev. C61, 054604 (2000)

M.Planinic, D.Androic, G.Backenstoss, D.Bosnar, T.Dooling, M.Furic, P.A.M.Gram, N.K.Gregory, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, A.O.Mateos, K.Michaelian, T.Petkovic, R.P.Redwine, D.Rowntree, N.Simicevic, R.Trezeciak, H.Ullrich, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Pion Absorption on ⁴He into the ppd Final State

NUCLEAR REACTIONS ⁴He(π⁺, pd), E=70, 118, 162, 239, 330 MeV; measured deuteron, proton spectra, σ(θ); deduced reaction mechanism features. Comparison with model predictions.

doi: 10.1103/PhysRevC.61.054604
Citations: PlumX Metrics

1999LE33 Phys.Rev. C60, 024603 (1999)

A.Lehmann, D.Androic, G.Backenstoss, D.Bosnar, T.Dooling, M.Furic, P.A.M.Gram, N.K.Gregory, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.O.Mateos, K.Michaelian, T.Petkovic, M.Planinic, R.P.Redwine, D.Rowntree, N.Simicevic, R.Trezeciak, H.Ullrich, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Total Cross Sections of the Charge Exchange Reaction (π⁺, π⁰) on ²H, ³He, and ⁴He Across the Δ(1232) Resonance

NUCLEAR REACTIONS ²H, ^3,4He(π⁺, π⁰), ²H(π⁺, π⁺n), E=70, 118, 162, 239, 330 MeV; measured total σ; deduced multiple scattering contributions, role of resonance. Comparison with previous results, model predictions.

doi: 10.1103/PhysRevC.60.024603
Citations: PlumX Metrics

1999PL04 Fizika(Zagreb) B8, 113 (1999)

Pion Absorption in ⁴He

NUCLEAR REACTIONS ⁴He(π⁺, X), E=70-330 MeV; measured particle spectra; deduced absorption cross section and its decomposition in different exit channels. LADS detector.

1997LE08 Phys.Rev. C55, 2931 (1997)

A.Lehmann, D.Androic, G.Backenstoss, D.Bosnar, H.Breuer, H.Dobbeling, T.Dooling, M.Furic, P.A.M.Gram, N.K.Gregory, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.O.Mateos, K.Michaelian, T.Petkovic, M.Planinic, R.P.Redwine, D.Rowntree, U.Sennhauser, N.Simicevic, R.Trezeciak, H.Ullrich, M.Wang, M.H.Wang, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Pion Absorption on ³He and ⁴He with Emission of Three Energetic Protons

NUCLEAR REACTIONS ^3,4He(π⁺, 3p), E=70, 118, 162, 239, 330 MeV; measured total absorption σ for complete set of variables; deduced initial, final state interaction signatures related features. Final state interaction, 3N phase space. Large acceptance detector system.

doi: 10.1103/PhysRevC.55.2931
Citations: PlumX Metrics

1997LE18 Phys.Rev. C56, 1872 (1997)

Multinucleon Pion Absorption on ⁴He into the pppn Final State

NUCLEAR REACTIONS ⁴He(π⁺, 3p), (π⁺, n2p), (π⁺, n3p), E=70, 118, 162, 239, 330 MeV; measured total absorption σ, differential σ over complete set of variables; deduced initial-, final-state interaction effects, no evidence for "double-Δ" mechanism.

doi: 10.1103/PhysRevC.56.1872
Citations: PlumX Metrics

1996AN06 Phys.Rev. C53, R2591 (1996)

D.Androic, G.Backenstoss, D.Bosnar, H.Breuer, H.Dobbeling, T.Dooling, M.Furic, P.A.M.Gram, N.K.Gregory, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, A.O.Mateos, K.Michaelian, T.Petkovic, R.P.Redwine, D.Rowntree, U.Sennhauser, N.Simicevic, R.Trezeciak, H.Ullrich, M.Wang, M.H.Wang, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Evidence of Initial State Interactions in Multinucleon Pion Absorption

NUCLEAR REACTIONS ^3,4He, N, Ar(π⁺, X), E=239 MeV; measured proton kinetic energy spectra, σ(θ) for 3p final states; deduced initial state interactions role in pion absorption.

doi: 10.1103/PhysRevC.53.R2591
Citations: PlumX Metrics

1996BA32 Phys.Lett. 379B, 60 (1996)

G.Backenstoss, D.Bosnar, H.Breuer, H.Dobbeling, T.Dooling, M.Furic, P.A.M.Gram, N.K.Gregory, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, A.O.Mateos, K.Michaelian, T.Petkovic, R.P.Redwine, D.Rowntree, U.Sennhauser, N.Simicevic, R.Trezeciak, H.Ullrich, M.Wang, M.H.Wang, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Contribution of Initial State Interactions to the Three-Nucleon Absorption of Pions by ³He

NUCLEAR REACTIONS ³He(π⁺, xp), E=118-239 MeV; measured proton distribution following pion absorption; deduced initial state interactions role.

doi: 10.1016/0370-2693(96)00326-7
Citations: PlumX Metrics

1996RZ01 Europhys.Lett. 34, 103 (1996)

B.Rzehorz, G.Backenstoss, M.Dzemidzic, M.Furic, A.Hoffart, T.Petkovic, H.Ullrich, H.J.Weyer, D.Weiser, M.Wildi

Evidence for Pion Absorption on Four Nucleons

NUCLEAR REACTIONS ⁴He(π⁺, X), E=120, 210 MeV; measured ppp-, ppn-coin following pion absorption; deduced 4-nucleon pion absorption σ.

doi: 10.1209/epl/i1996-00423-y
Citations: PlumX Metrics

1995DA16 Nucl.Phys. A589, 553 (1995)

E.Daum, S.Vinzelberg, D.Gotta, H.Ullrich, G.Backenstoss, P.Weber, H.J.Weyer, M.Furic, T.Petkovic

Pion Absorption at Rest in ⁴He

NUCLEAR REACTIONS ⁴He(π^-, 2n), (π^-, np), (π^-, nd), (π^-, nt), E at rest; measured particle pairs energy, σ(θ); deduced branching ratios.

doi: 10.1016/0375-9474(95)00068-C
Citations: PlumX Metrics

1995GO03 Phys.Rev. C51, 469 (1995)

D.Gotta, M.Dorr, W.Fetscher, G.Schmidt, H.Ullrich, G.Backenstoss, M.Izycki, W.Kowald, I.Schwanner, P.Weber, H.J.Weyer

Negative Pion Absorption at Rest in ³He

NUCLEAR REACTIONS ³He(π^-, nd), (π^-, np), (π^-, 2n), E at rest; measured (particle)(particle), (particle)(particle)(X-ray)-coin; deduced branching ratios of dn and pnn final states, reaction mechanism. Kinematically complete experiment.

doi: 10.1103/PhysRevC.51.469
Citations: PlumX Metrics

1994AL28 Phys.Rev.Lett. 73, 1336 (1994)

T.Alteholz, D.Androic, G.Backenstoss, D.Bosnar, H.Breuer, A.Brkovic, H.Dobbeling, T.Dooling, W.Fong, M.Furic, P.A.M.Gram, N.K.Gregory, J.P.Haas, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, Z.N.Lin, G.Mahl, A.O.Mateos, K.Michaelian, S.Mukhopadhyay, T.Petkovic, R.P.Redwine, D.Rowntree, R.Schumacher, U.Sennhauser, N.Simicevic, F.D.Smit, G.van der Steenhoven, D.R.Tieger, R.Trezeciak, H.Ullrich, M.Wang, M.H.Wang, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Large-Solid-Angle Study of Pion Absorption on ³He

NUCLEAR REACTIONS ³He(π⁺, X), E=118-239 MeV; measured proton energy spectra following absorption; deduced total absorption σ(E), two-, three-nucleon absorption relative contributions. Large acceptance detector system.

doi: 10.1103/PhysRevLett.73.1336
Citations: PlumX Metrics

1992SA22 Phys.Rev. C46, 2172 (1992)

P.Salvisberg, G.Backenstoss, H.Krause, R.J.Powers, M.Steinacher, H.J.Weyer, M.Wildi, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic, N.Simicevic, H.Zmeskal, A.Janett, R.H.Sherman

Pion Absorption in Tritium at Intermediate Energies

NUCLEAR REACTIONS ³H(π⁺, X), E=119-300 MeV; measured σ(θ) for two outgoing nucleon pair; deduced pion absorption mechanism. ³H deduced n, p momentum probability densities. Kinematically complete measurement.

doi: 10.1103/PhysRevC.46.2172
Citations: PlumX Metrics

1991MA02 Phys.Rev. C43, 1106 (1991)

C.J.Martoff, W.J.Cummings, D.Pocanic, S.S.Hanna, H.Ullrich, M.Furic, T.Petkovic, T.Kozlowski, J.P.Perroud

Nucleon Pairing in μ^- Capture by ⁴⁰Ca

NUCLEAR REACTIONS Ca(μ^-, p), (μ^-, n), E at rest; measured nucleon spectra; deduced correlated pair capture role.

doi: 10.1103/PhysRevC.43.1106
Citations: PlumX Metrics

1991WE14 Nucl.Phys. A534, 541 (1991)

P.Weber, G.Backenstoss, M.Izycki, R.J.Powers, P.Salvisberg, M.Steinacher, H.J.Weyer, S.Cierjacks, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic, N.Simicevic

Three-Nucleon Processes and the Total Pion Absorption Cross Section in ³He

NUCLEAR REACTIONS ³He(π⁺, 2p), (π^-, np), (π^-, nd), E=64, 119, 162, 206 MeV; measured absorption processes σ involving all three nucleons; deduced integrated σ for 3N absorption, total absorption σ. Different counter configurations.

doi: 10.1016/0375-9474(91)90461-E
Citations: PlumX Metrics

1990ST19 Nucl.Phys. A517, 413 (1990)

M.Steinacher, G.Backenstoss, M.Izycki, P.Salvisberg, P.Weber, H.J.Weyer, A.Hoffart, B.Rzehorz, H.Ullrich, M.Dzemidzic, M.Furic, T.Petkovic

Pion Absorption in Flight on ⁴He

NUCLEAR REACTIONS ⁴He(π, X), (π, dX), (π⁺, X), (π^-, X), E=65, 120, 165 MeV; measured σ(θ); deduced total absorption σ.

doi: 10.1016/0375-9474(90)90210-D
Citations: PlumX Metrics

1989BA19 Phys.Lett. 222B, 7 (1989)

G.Backenstoss, M.Izycki, R.Powers, P.Salvisberg, M.Steinacher, P.Weber, H.J.Weyer, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic

What is the Mechanism for Three-Nucleon Absorption of Pions in ³He ( Question )

NUCLEAR REACTIONS ³He(π⁺, 2p), E=120 MeV; measured pp-coin; deduced pion absorption mechanism.

doi: 10.1016/0370-2693(89)90714-4
Citations: PlumX Metrics

1989WE10 Nucl.Phys. A501, 765 (1989)

P.Weber, G.Backenstoss, M.Izycki, R.J.Powers, P.Salvisberg, M.Steinacher, H.J.Weyer, S.Cierjacks, A.Hoffart, H.Ullrich, M.Furic, T.Petkovic, N.Simicevic

Two-Nucleon Absorption of π⁺ and π^- on ³He Across the Δ-Resonance Region

NUCLEAR REACTIONS ³He(π⁺, 2p), (π^-, pn), E=64, 119, 162, 206 MeV; measured σ(θ); deduced Legendre coefficients, σ vs energy, nucleon momentum distribution in ³He.

doi: 10.1016/0375-9474(89)90160-7
Citations: PlumX Metrics

1988BA38 Phys.Rev.Lett. 61, 923 (1988)

G.Backenstoss, D.Brodbeck, M.Izycki, P.Salvisberg, M.Steinacher, P.Weber, H.J.Weyer, A.Hoffart, B.Rzehorz, H.Ullrich, D.Bosnar, M.Furic, T.Petkovic

New Pion-Absorption Modes Observed from Triple Coincidences in ⁴He

NUCLEAR REACTIONS ⁴He(π⁺, 3p), E at 220 MeV/c; measured σ(θ₁, θ₂, θ₃) vs neutron momentum; deduced pion absorption modes.

doi: 10.1103/PhysRevLett.61.923
Citations: PlumX Metrics

1987BA44 Phys.Rev.Lett. 59, 767 (1987); Erratum Phys.Rev.Lett. 59, 2124 (1987)

G.Backenstoss, M.Izycki, P.Salvisberg, M.Steinacher, P.Weber, H.J.Weyer, S.Cierjacks, B.Rzehorz, H.Ullrich, M.Furic, T.Petkovic, N.Simicevic

Observation of a Quasifree Three-Nucleon-Absorption Mode of Pions in ⁴He

NUCLEAR REACTIONS ⁴He(π⁺, pd), (π^-, nd), E at 220 MeV/c; measured σ(Ep), σ(θn); deduced reaction, pion absorption mechanisms. ΔE-E scintillation counter, kinematically complete experiment.

doi: 10.1103/PhysRevLett.59.767
Citations: PlumX Metrics

1987ST25 Helv.Phys.Acta 60, 737 (1987)

M.Steinacher, G.Backenstoss, M.Izycki, P.Salvisberg, P.Weber, H.J.Weyer, S.Cierjacks, B.Rzehorz, H.Ullrich, M.Furic, T.Petkovic, N.Simicevic

π⁺/π^--Absorption an ⁴He

NUCLEAR REACTIONS ⁴He(π^-, pd), (π^-, nd), (π⁺, pd), (π⁺, nd), E not given; measured not abstracted; deduced pion absorption mechanism.

1987WE10 Helv.Phys.Acta 60, 736 (1987)

P.Weber, G.Backenstoss, M.Izycki, P.Salvisberg, M.Steinacher, H.J.Weyer, S.Cierjacks, H.Ullrich, M.Furic, T.Petkovic, N.Simicevic

π⁺/π^--Absorption an ³He

NUCLEAR REACTIONS ³He(π⁺, X), (π^-, X), E=65, 120, 165, 210 MeV; measured σ(θ), σ; deduced two-nulceon pion absorption mechanism.

1986BA06 Nucl.Phys. A448, 567 (1986)

G.Backenstoss, M.Izycki, W.Kowald, P.Weber, H.J.Weyer, S.Ljungfelt, U.Mankin, G.Schmidt, H.Ullrich

Measurement of the Ratio (π^-³He → π⁰t)/(π^-³He → dn) and of the Respective Partial K X-Ray Yields

NUCLEAR REACTIONS ³He(π^-, π⁰), (π^-, d), E at rest; measured pionic X-ray(particle)-coin; deduced branching ratios, partial K X-ray yields.

doi: 10.1016/0375-9474(86)90431-8
Citations: PlumX Metrics

1986MA16 Czech.J.Phys. B36, 378 (1986)

C.J.Martoff, D.Pocanic, L.W.Whitlow, S.S.Hanna, H.Ullrich, S.Cierjacks, M.Furic, T.Petkovic, H.J.Weyer

Search for Emission of Nucleons and Nucleon Pairs following Muon Capture in Selected Light Nuclei

NUCLEAR REACTIONS ¹²C, ¹⁶O, ²⁷Al(μ^-, p), E at rest; measured proton spectra.

doi: 10.1007/BF01597841
Citations: PlumX Metrics

1986WE02 Czech.J.Phys. B36, 243 (1986)

H.J.Weyer, G.Backenstoss, M.Izycki, P.Salvisberg, M.Steinacher, P.Weber, S.Cierjacks, S.Ljungfelt, H.Ullrich, M.Furic, T.Petkovic

π-Absorption on ³He

NUCLEAR REACTIONS ³He(π⁺, π⁺), (π^-, π^-), E ≈ resonance; measured σ(θ); deduced pion absorption mechanism.

doi: 10.1007/BF01597154
Citations: PlumX Metrics

1985BA59 Phys.Rev.Lett. 55, 2782 (1985)

G.Backenstoss, M.Izycki, P.Salvisberg, M.Steinacher, P.Weber, H.J.Weyer, S.Cierjacks, S.Ljungfelt, H.Ullrich, M.Furic, T.Petkovic

Evidence for a Direct Three-Nucleon Pion-Absorption Process

NUCLEAR REACTIONS ³He(π⁺, 2p), (π^-, pn), E at 220 MeV/c; measured σ(θp); deduced direct three-nucleon pion absorption mechanism.

doi: 10.1103/PhysRevLett.55.2782
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1985DO19 Nucl.Phys. A445, 557 (1985); Erratum Nucl.Phys. A457, 742 (1986)

M.Dorr, W.Fetscher, D.Gotta, J.Reich, H.Ullrich, G.Backenstoss, W.Kowald, H.-J.Weyer

Composite Particle Emission following π^- Absorption in ⁶Li: Test of reaction mechanisms

NUCLEAR REACTIONS ⁶Li(π^-, np), (π^-, 2p), (π^-, nn), (π^-, nd), (π^-, nt), (π^-, pd), (π^-, pt), E at rest; measured (particle)(particle)-coin; deduced reaction mechanism. Enriched target.

doi: 10.1016/0375-9474(85)90559-7
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1984BA13 Phys.Lett. 137B, 329 (1984)

G.Backenstoss, M.Izycki, M.Steinacher, P.Weber, H.-J.Weyer, K.Von Weymarn, S.Cierjacks, S.Ljungfelt, U.Mankin, T.Petkovic, G.Schmidt, H.Ullrich, M.Furic

Isospin Dependence of Pion Absorption on Nucleon Pairs in ³He

NUCLEAR REACTIONS ³He(π⁺, 2p), (π^-, np), E=165 MeV; measured pp-, np-energy correlations; deduced nucleon pair pion absorption ratio, isospin dependence.

doi: 10.1016/0370-2693(84)91726-X
Citations: PlumX Metrics

1984SC09 Nucl.Phys. A412, 253 (1984)

I.Schwanner, G.Backenstoss, W.Kowald, L.Tauscher, H.-J.Weyer, D.Gotta, H.Ullrich

Pionic and Muonic X-Ray Measurements on Light Isotopes

ATOMIC PHYSICS, Mesic-Atoms ³He, ¹⁶O, ¹⁸O, Cl; measured pionic, muonic X-rays; deduced intensities, strong interaction effects. ¹³C deduced γ-transition energy.

doi: 10.1016/0375-9474(84)90681-X
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1983BA59 Helv.Phys.Acta 56, 978 (1983)

G.Backenstoss, A.Huck, M.Steinmacher, P.Weber, H.J.Weyer, K.Von Weymarn, S.Ljungfelt, U.Mankin, T.Maier, H.Ullrich

Absorption im Flug von π⁺ und π^- Mesonen an ³He

NUCLEAR REACTIONS ³He(π⁺, 2p), (π^-, np), E=220 MeV/c; measured σ(θ₁, θ₂) following pion absorption.

1982BA43 Phys.Lett. 115B, 445 (1982)

G.Backenstoss, W.Kowald, I.Schwanner, H.J.Weyer, M.Dorr, D.Gotta, G.Schmidt, L.M.Simons, H.Ullrich

Measurement of the Total and Partial K-X-Ray Yields for the pnn- and dn-Reaction Channels of the π^--Absorption in ³He

NUCLEAR REACTIONS ³He(π^-, d), (π^-, np), E at rest; measured K X-ray(d)-, K X-ray(p)-coin; deduced partial K X-ray yields.

ATOMIC PHYSICS, Mesic-Atoms ³He(π^-, d), E at rest; measured K X-ray(d)-coin; deduced pionic ³He total K X-ray yield.

doi: 10.1016/0370-2693(82)90389-6
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1982GO04 Phys.Lett. 112B, 129 (1982)

D.Gotta, M.Dorr, W.Fetscher, G.Schmidt, H.Ullrich, G.Backenstoss, W.Kowald, I.Schwanner, H.-J.Weyer

Kinematically Complete Measurement of the Absorption of Stopped Pions in ³He

NUCLEAR REACTIONS ³He(π^-, np), (π^-, n), E at rest; measured σ(E₁, E₂) vs relative angle; deduced pion absorption mechanism, final state branching ratios. Kinematically complete experiment.

doi: 10.1016/0370-2693(82)90312-4
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1980BA31 Nucl.Phys. A343, 365 (1980)

B.Bassalleck, H.D.Engelhardt, W.D.Klotz, C.W.Lewis, F.Takeutchi, H.Ullrich, M.Furic

Wide Angular Range Study of the Reaction ¹⁶O(π^-, 2n)¹⁴N with Stopped Pions

NUCLEAR REACTIONS ¹⁶O(π^-, 2n), E at rest; measured σ(En₁, En₂, θ). ¹⁴N deduced levels. Kinematically complete experiment.

doi: 10.1016/0375-9474(80)90659-4
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1980BA53 Helv.Phys.Acta 53, 303 (1980)

G.Backenstoss, W.Kowald, I.Schwanner, L.Tauscher, H.J.Weyer, M.Doerr, W.Fetscher, D.Gotta, U.Raich, G.Schmidt, H.Ullrich

π^--Absorption in ³He

NUCLEAR REACTIONS ³He(π^-, pn), E at rest; measured pn-coin, σ(Ep, En, θ); deduced regions of quasifree scattering, final state interaction dominance. Gas target.

1980SC24 Phys.Lett. B96, 268 (1980)

I.Schwanner, R.Abela, G.Backenstoss, W.Kowald, P.Pavlopoulos, L.Tauscher, H.J.Weyer, P.Blum, M.Dorr, W.Fetscher, D.Gotta, R.Guigas, H.Koch, H.Poth, G.Schmidt, H.Ullrich

Isotope Effects in Light Pionic Atoms

ATOMIC PHYSICS, Mesic-Atoms ^16,18O, ^7,6Li, ³He; measured pionic E(X-ray), I(X-ray), strong interaction widths, shifts.^4,3He, ^6,7Li, ^16,18O deduced isotope effect. D₂¹⁶O, D₂¹⁸O targets.

doi: 10.1016/0370-2693(80)90764-9
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1979AB14 Helv.Phys.Acta 52, 413 (1979)

R.Abela, G.Backenstoss, M.Izycki, W.Kowald, I.Schwanner, L.Tauscher, H.J.Weyer, M.Doerr, W.Fetscher, R.Guigas, D.Gotta, H.Poth, G.Schmidt, H.Ullrich

Isotopieeffekte an leichten pionischen Atomen

ATOMIC PHYSICS ^3,4He, ^16,18O; measured pionic X-rays; deduced isotope shift, widths.

1979BA16 Nucl.Phys. A319, 397 (1979)

B.Bassalleck, H.-D.Engelhardt, W.D.Klotz, F.Takeutchi, H.Ullrich, M.Furic

Single-Neutron Emission Induced by Stopped π^- in 1p Shell Nuclei

NUCLEAR REACTIONS ⁶Li, ⁷Li, ⁹Be, ¹⁰B, ¹²C, ¹⁴N(π^-, n), E=0; measured single neutron emission rate.

doi: 10.1016/0375-9474(79)90522-0
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1979BA17 Phys.Rev. C19, 1893 (1979)

B.Bassalleck, E.L.Haase, W.-D.Klotz, F.Takeutchi, H.Ullrich, M.Furic, Y.Sakamoto

Two-Neutron Emission in the Absorption of Stopped Pions on Lithium Isotopes

NUCLEAR REACTIONS ^6,7Li(π^-, 2n), E=0; measured σ(Eα), distribution of recoil momentum, θ; deduced reaction mechanism.

doi: 10.1103/PhysRevC.19.1893
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1978BA35 Z.Phys. A286, 401 (1978)

B.Bassalleck, W.D.Klotz, F.Takeutchi, H.Ullrich, M.Furic

Study of the ⁴⁰Ca(π^-, 2n)³⁸K Reaction at Rest

NUCLEAR REACTIONS ⁴⁰Ca(π^-, 2n), E=0 MeV; measured two neutron momenta, σ.

doi: 10.1007/BF01408897
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1977BA51 Phys.Rev. C16, 1526 (1977)

B.Bassalleck, W.-D.Klotz, F.Takeutchi, H.Ullrich, M.Furic

Two-Neutron Emission Induced by Stopped π^- on ⁹Be, ¹⁰B, and ¹²C

NUCLEAR REACTIONS ⁹Be, ¹⁰B, ¹²C(π^-, 2n), E=0 MeV; measured reaction rate; deduced excitation spectra, recoil momentum.

doi: 10.1103/PhysRevC.16.1526
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1976BA54 Phys.Lett. 65B, 128 (1976)

B.Bassalleck, H.D.Engelhardt, E.L.Haase, W.-D.Klotz, C.W.Lewis, F.Takeutchi, H.Ullrich, M.Furic

Neutron Pair Emission Following the Capture of π^- in ¹⁴N

NUCLEAR REACTIONS ¹⁴N(π^-, 2n), E ≈ 0 MeV; measured recoil momentum distribution.

doi: 10.1016/0370-2693(76)90011-3
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1976EN02 Nucl.Phys. A258, 480 (1976)

H.D.Engelhardt, C.W.Lewis, H.Ullrich

The Absorption of π^- at Rest on Complex Nuclei

NUCLEAR REACTIONS ⁹Be, ¹⁰B, O, ¹⁹F, ³¹P, Ca, ⁹³Nb(π^-, γ), E=0; measured Eγ, Doppler broadening, transition yields; deduced yields of single-, multi-nucleon removal; deduced recoil momenta. ¹⁰B enriched target.

doi: 10.1016/0375-9474(76)90486-3
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1975EN03 J.Phys.(Paris), Colloq. 36, C5-79 (1975)

H.D.Engelhardt, C.W.Lewis, H.Ullrich

Absorption de π^- a l'Arret sur les Noyaux

NUCLEAR REACTIONS ⁹Be, ¹⁰B, ¹⁶O, ¹⁹F, ³¹P, ⁴⁰Ca, ⁹³Nb(π^-, γ); measured pion absorption.

1974UL02 Phys.Rev.Lett. 33, 433 (1974)

H.Ullrich, E.T.Boschitz, H.D.Engelhardt, C.W.Lewis

Multinucleon Removal in the Absorption of π^- at Rest and at 60 MeV

NUCLEAR REACTIONS ¹⁶O, ¹⁹F, ²⁴Mg, ³¹P, ⁴⁰Ca, ⁹³Nb(π^-, xnypγ), E=0, 60 MeV; measured π-γ-coin; deduced yields.

doi: 10.1103/PhysRevLett.33.433
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1973LE22 Phys.Lett. 47B, 339 (1973)

C.W.Lewis, H.Ullrich, H.D.Engelhardt, E.T.Boschitz

Possible Alpha-Particle Cluster Absorption of Pions by ¹⁶O

NUCLEAR REACTIONS ¹⁶O(π^-, γ), E < 6.13 MeV; measured σ(Eγ).

doi: 10.1016/0370-2693(73)90617-5
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1972SC06 Nucl.Phys. B38, 628 (1972)

R.Schiffer, H.H.J.Schnackers, V.Valdmanis, U.Idschok, K.Muller, P.Benz, R.Riebensahm, V.Schulz, F.Storim, H.Ullrich, G.Knies, O.Braun, J.Stiewe, H.Finger, C.Kiesling, P.Schlamp, J.Weigl

Partial Cross Sections for Multipion Photoproduction Off Deuterons at Energies up to 5 GeV

NUCLEAR REACTIONS ²H(γ, xπ), E < 5.5 GeV; measured σ for multipion production.

doi: 10.1016/0550-3213(72)90333-1
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1970EN03 Phys.Lett. 32B, 716 (1970)

J.Engler, K.Horn, F.Monnig, P.Schludecker, W.Schmidt-Parzefall, H.Schopper, P.Sievers, H.Ullrich, R.Hartung, K.Runge, Y.Galaktionov

Neutron-Nucleus Total Cross-Sections between 8 GeV/c and 21 GeV/c

NUCLEAR REACTIONS ⁹Be, C, ²⁷Al, Cu, Pb(n, X), E=8, 11, 14, 21 GeV/c; measured σ(E).

doi: 10.1016/0370-2693(70)90453-3
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1969UL01 Nucl.Phys. A123, 641(1969)

H.Ullrich, H.Krauth

Photonuclear Reactions in ⁴⁰Ca and ¹⁶O Leading to Excited States of the Residual Nuclei

NUCLEAR REACTIONS ¹⁶O, ⁴⁰Ca(γ, pγ'), (γ, nγ'), E < 32 MeV; measured σ(Eγ').

doi: 10.1016/0375-9474(69)91011-2
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1966HO12 Nucl.Phys. 85, 631(1966)

H.Hoffmann, B.Prowe, H.Ullrich

Spectra of Photo-Alpha Particles from Nuclei in the Region Z = 12-30

NUCLEAR REACTIONS Mg, Al, S, Ni, Zn(γ, α), E < 31 MeV; measured α-spectra; deduced yields, level density parameters. Natural targets.

doi: 10.1016/0029-5582(66)90326-9
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