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NSR database version of April 11, 2024.

Search: Author = G.Backenstoss

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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.

2000KO66      Eur.Phys.J. A 9, 537 (2000)

B.Kotlinski, D.Androic, G.Backenstoss, D.Bosnar, 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, M.Kroedel, G.Kyle, A.Lehmann, V.Markushin, A.O.Mateos, K.Michaelian, T.Petkovic, M.Planinic, R.P.Redwine, D.Rowntree, N.Simicevic, R.Trezeciak, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Pion Absorption Reactions on N, Ar and Xe

NUCLEAR REACTIONS Ar(π⁺, 2pX), (π⁺, pdX), E=70, 118, 162, 239, 330 MeV; N, Xe(π⁺, 2pX), (π⁺, pdX), E=239 MeV; measured absorption reaction channels σ, proton spectra, particle multiplicities. Large-acceptance detector system.

doi: 10.1007/s100500070010
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1117.

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.

1999RO20      Phys.Rev. C60, 054610 (1999)

D.Rowntree, D.Androic, G.Backenstoss, D.Bosnar, H.Breuer, 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, M.Planinic, R.P.Redwine, N.Simicevic, R.Trezeciak, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

π⁺ Absorption on N and Ar

NUCLEAR REACTIONS N, Ar(π⁺, X), E=118, 162, 239 MeV; measured total absorption σ, final state particle multiplicities; deduced average number of participating nucleons.

doi: 10.1103/PhysRevC.60.054610
Citations: PlumX Metrics

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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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1986KO22      Phys.Lett. 176B, 327 (1986)

Th.Kohler, P.Blum, G.Buche, A.D.Hancock, H.Koch, A.Kreissl, H.Poth, U.Raich, D.Rohmann, G.Backenstoss, Ch.Findeisen, J.Repond, L.Tauscher, A.Nilsson, S.Carius, M.Suffert, S.Charalambus, M.Chardalas, S.Dedoussis, H.Daniel, T.von Egidy, F.J.Hartmann, W.Kanert, G.Schmidt, J.J.Reidy, M.Nicholas, A.Wolf

Precision Measurement of Strong Interaction Isotope Effects in Antiprotonic ¹⁶O, ¹⁷O, and ¹⁸O Atoms

NUCLEAR REACTIONS ^16,17,18O(p-bar, X), E=low; measured antiprotonic X-rays.

ATOMIC PHYSICS ^16,17,18O(p-bar, X), E=low; measured antiprotonic X-rays; deduced strong interaction shifts, widths.

doi: 10.1016/0370-2693(86)90173-5
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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
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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
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1984GU06      Phys.Lett. 137B, 323 (1984)

R.Guigas, P.Blum, H.Koch, M.Meyer, H.Poth, U.Raich, B.Richter, G.Backenstoss, P.Pavlopoulos, L.Tauscher, L.Adiels, K.Fransson, A.Nilsson, M.Suffert, K.Zioutas

Strong Interaction Effects in Antiprotonic ⁶Li/⁷Li Atoms

ATOMIC PHYSICS ^6,7Li(p-bar, X), E at 600 MeV/c; measured E X-ray, I X-ray; deduced strong interaction shifts, widths.

NUCLEAR REACTIONS ^6,7Li(p-bar, X), E at 600 MeV/c; measured E X-ray, I X-ray; deduced strong interaction effects. Optical model comparison.

doi: 10.1016/0370-2693(84)91725-8
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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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1983AB02      Nucl.Phys. A395, 413 (1983)

R.Abela, G.Backenstoss, W.Kunold, L.M.Simons, R.Metzner

Measurements of the Polarization of the 2p and 1s States in Muonic Atoms and the Helicity of the Muon in Pion Decay

ATOMIC PHYSICS, Mesic-Atoms Cd, Pd, I, Se; measured muonic X-ray CP; deduced 1s, 2p level μ-spin polarization, depolarization, muon helicity following pion decay. Metallic, amorphous Se modifications.

doi: 10.1016/0375-9474(83)90051-9
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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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1980AB15      Helv.Phys.Acta 53, 300 (1980)

R.Abela, G.Backenstoss, W.Kowald, J.Wuest, H.G.Seiler, M.Seiler, L.Simons

Neue Obere Grenze fur μ^- e⁺ Konversion

NUCLEAR REACTIONS ¹²⁷I(μ^-, e⁺), E at rest; measured Eβ, Iβ; deduced muon-electron conversion coefficient upper limit.

1980BA36      Phys.Lett. B95, 212 (1980)

G.Backenstoss, W.Kowald, I.Schwanner, L.Tauscher, H.J.Weyer, D.Gotta, R.Guigas

Precision Determination of the Difference of the Charge Radii of O¹⁶ and ¹⁸O

NUCLEAR MOMENTS ^16,18O; measured muonic X-rays, isotope shift; deduced rms charge radii difference.

doi: 10.1016/0370-2693(80)90471-2
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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.

1978PO02      Nucl.Phys. A294, 435 (1978)

H.Poth, G.Backenstoss, I.Bergstrom, P.Blum, J.Egger, W.Fetscher, R.Guigas, R.Hagelberg, N.Hassler, C.J.Herrlander, M.Izycki, H.Koch, A.Nilsson, P.Pavlopoulos, H.P.Povel, K.Rolli, I.Sick, L.Simons, A.Schwitter, J.Sztarkier, L.Tauscher

Study on Antiprotonic Atoms of Light Nuclei and Isotopes

ATOMIC PHYSICS N, ^16,18O, S; measured antiprotonic X-rays; deduced strong interaction effects, chemical effects.

doi: 10.1016/0375-9474(78)90229-4
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1974DA05      Phys.Lett. 48B, 109 (1974)

H.Daniel, H.-J.Pfeiffer, K.Springer, P.Stoeckel, G.Backenstoss, L.Tauscher

Electric Charge Radius of ³⁶A, "⁴⁰Ar"

ATOMIC PHYSICS, Mesic-Atoms ³⁶Ar; measured E(X-ray). ³⁶Ar deduced charge radius.

doi: 10.1016/0370-2693(74)90655-8
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1971BA10      Nucl.Phys. A162, 541 (1971)

G.Backenstoss, S.Charalambus, H.Daniel, W.D.Hamilton, U.Lynen, C.von der Malsburg, G.Poelz, H.P.Povel

Nuclear γ-Rays Following Muon Capture

NUCLEAR REACTIONS Sc, Mn, Co, Nb, I, Bi(μ^-, xn)Ca, Cr, Fe, Zr, Te, Pb measured Eγ, Iγ; deduced neutron multiplicity probability. ^43,44Ca, ^52,53,54Cr, ^55,56,57,58Fe, ^90,91,92,93Zr, ^{123,124,125,126}Te, ^206,207,208Pb deduced transitions.

doi: 10.1016/0375-9474(71)90253-3
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1971BB11      Phys.Lett. B 36, 422 (1971)

G.Backenstoss, H.Daniel, K.Jentzsch, H.Koch, H.P.Povel, F.Schmeissner, K.Springer, R.L.Stearns

Muonic X-ray measurements with a high-pressure gas target

ATOMIC PHYSICS, Mesic-atoms H, He, Ne, Ar(μ^-, X), E at rest; measured muonic X-ray spectra. Ne, Ar deduced radii.

doi: 10.1016/0370-2693(71)90740-4
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1969CH06      Nucl.Phys. A126, 428(1969)

St.Charalambus, H.Daniel, H.Koch, G.Poelz, H.Schmitt, L.Tauscher, G.Backenstoss

Energies and Intensities of ¹²⁵Sb Gamma Rays

RADIOACTIVITY ¹²⁵Sb; measured Eγ, Iγ. ¹²⁵Te levels deduced E.

doi: 10.1016/0375-9474(69)90476-X
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1969PO07      Z.Physik 227, 311 (1969)

G.Poelz, H.Schmitt, L.Tauscher, G.Backenstoss, S.Charalambus, H.Daniel, H.Koch

Nuclear γ-Rays Produced by π Mesons

NUCLEAR REACTIONS ¹⁹F, ²³Na, ²⁷Al, ⁵¹V, ⁵⁵Mn, ⁵⁹Co, ⁷⁵As, ¹⁴¹Pr, ¹⁸¹Ta, ¹⁹⁷Au(π^-, Xγ), E approx 0; measured Eγ.

doi: 10.1007/BF01394428
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1967BA78      Phys.Lett. 25B, 547 (1967)

G.Backenstoss, S.Charalambus, H.Daniel, H.Koch, G.Poelz, H.Schmitt, L.Tauscher

Nuclear Radii of Light Nuclei from Muonic X-Ray Measurements

NUCLEAR REACTIONS ^10,11B, ¹²C, ¹⁴N, ^16,18O, ¹⁹F, ²³Na, Mg, ²⁷Al, Si, ³¹P, S, Cl(μ, X-ray); measured E(X). ^10,11B, ¹²C, ¹⁴N, ^16,18O, ¹⁹F, ²³Na, Mg, ²⁷Al, Si, ³¹P, S, Cl deduced nuclear radii.

doi: 10.1016/0370-2693(67)90142-6
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1967DE21      Nucl.Phys. 87, 657 (1967)

S.A.De Wit, G.Backenstoss, C.Daum, J.C.Sens, H.L.Acker

Measurement and Analysis of Muonic X-Ray Spectra in Deformed Nuclei

ATOMIC PHYSICS, Mesic-Atoms Sm, Eu, Tb, Ho, Hf, Ta, W, Os, Ir, Th, ²³³U, ²³⁵U, ²³⁸U, ²³⁹Pu; measured muonic X-rays; deduced nuclear charge distribution parameters, Q₀.

doi: 10.1016/0029-5582(67)90003-X
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1966AC02      Nucl.Phys. 87, 1 (1966)

H.L.Acker, G.Backenstoss, C.Daum, J.C.Sens, S.A.De Wit

Measurement and Analysis of Muonic X-Ray Spectra in Spherical Nuclei

NUCLEAR REACTIONS ¹²¹Sb(μ^-, νnγ), ¹²³Sb(μ^-, νnγ), ¹³⁹La(μ^-, νnγ), E > 100 MeV; measured Eγ. ¹²⁰Sn, ¹²²Sn, ¹³⁸Ba deduced levels. ⁶⁶Ga [from zn(p, γ)]; measured Eγ. Cl, Ca, Fe, Sn, Sb, Te, I, Cs, Ba, La, Ce, Pr, Nd, Au, Hg, Tl, ²⁰⁶Pb, Pb, Bi; measured E(X-ray), I(X-ray), deduced nuclear charge distribution parameters.

doi: 10.1016/0029-5582(66)90355-5
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1965AC01      Nucl.Phys. 62, 477 (1965)

H.L.Acker, H.Marschall, G.Backenstoss, D.Quitmann

Die Quadrupolaufspaltung des 2p-Dubletts in Myonenatomen mit stark deformierten Kernen

doi: 10.1016/0029-5582(65)90493-1
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1965AC02      Phys.Letters 14, 317 (1965)

H.L.Acker, G.Backenstoss, C.Daum, J.C.Sens, S.A.De Wit

Measurements and Analysis of Muonic X-Ray Spectra in the Spherical Nuclei Au, Pb and Bi and the Deformed Nuclei W and U

ATOMIC PHYSICS, Mesic-Atoms W, Au, Pb, Bi, U; measured muonic X-ray spectra. W, U deduced quadrupole moment.

doi: 10.1016/0031-9163(65)90221-0
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1955BA25      Z.Naturforsch. 10a, 920 (1955)

G.Backenstoss, K.Goebel

The Number of Gamma Quanta of Potassium

1955BE72      Z.Naturforsch. 10a, 384 (1955)

G.Backenstoss

Intensity Measurement of Energy Rich γ Rays of RaC'