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NSR database version of April 11, 2024.

Search: Author = H.Ullrich

Found 49 matches.

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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)

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 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)

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

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+--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+--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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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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