NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = B.A.Logan Found 50 matches. 1996LO21 Appl.Radiat.Isot. 47, 751 (1996) A New Look at Radiationless Transitions in Muonic Atoms ATOMIC PHYSICS, Mesic-Atoms 238U; calculated radiationless transitions probabilities in muonic atoms. Two indistinguishable quantum oscillators model.
doi: 10.1016/0969-8043(96)00045-0
1995KR18 Appl.Radiat.Isot. 46, 477 (1995) M.Krcmar, Z.Krecak, A.Ljubicic, B.A.Logan, D.B.Isabelle, J.Vernois Efficiency of the Channel Electron Multiplier for Low Energy 205Pb Ions RADIOACTIVITY 209Po(α) [from 209Bi(p, n), E=9 MeV]; 205Pb(EC) [from 209Po(α)-decay]; measured α(ce)-coin; deduced channel electron multiplier efficiency vs 205Pb ion energy.
doi: 10.1016/0969-8043(95)00058-5
1995KR19 Appl.Radiat.Isot. 46, 547 (1995) Z.Krecak, M.Krcmar, A.Ljubicic, B.A.Logan, D.B.Isabelle, J.Vernois Experimental Estimation of the Population of the First Excited Level in 205Pb Accompanying α Decay of 209Po RADIOACTIVITY 209Po(α); measured 205Pb level population probability per α-decay.
doi: 10.1016/0969-8043(95)00084-4
1994KR11 Phys.Rev. C50, 1319 (1994) Z.Krecak, M.Krcmar, A.Ljubicic, B.A.Logan, D.B.Isabelle, J.Vernois Measurement of the Half-Life of the First Excited States of 205Pb RADIOACTIVITY 209Po(α); measured α-decay; deduced 205Tl(ν, e)205Pb implications. 205Pb levels deduced structure characteristics, decay T1/2.
doi: 10.1103/PhysRevC.50.1319
1994LJ01 Phys.Lett. 325B, 297 (1994) A New Look at Nuclear Excitation in Positron-Electron Annihilation
doi: 10.1016/0370-2693(94)90014-0
1993KR02 Phys.Rev. C47, 906 (1993) M.Krcmar, A.Ljubicic, B.A.Logan, M.Bistrovic Reply to ' Comment on ' Resonant and Nonresonant Contributions to the Photoactivation of 111Cd ' ' NUCLEAR REACTIONS 111Cd(γ, γ'), E=radioactive source; analyzed data; deduced isomeric level excitation, reaction mechanism. Photoactivation using 60Co source.
doi: 10.1103/PhysRevC.47.906
1993LJ01 Nucl.Instrum.Methods Phys.Res. A325, 545 (1993) A.Ljubicic, D.Kekez, I.Zlimen, B.A.Logan Nondestructive Method for Identification of 205Pb at Very Low Concentrations NUCLEAR REACTIONS 205Tl(ν, e), E=astrophysical; calculated 205Pb atom number measuring possibility. Deexcitation of level populated in nuclear excitations by electron transition.
doi: 10.1016/0168-9002(93)90403-5
1991KE05 Nuovo Cim. 104A, 607 (1991) D.Kekez, A.Ljubicic, S.Kaucic, B.A.Logan Search for Violation of the Pauli Principle in Nuclear Decays RADIOACTIVITY 71Ge(EC); 127I(β+), (β-); measured Pauli principle violation upper limit.
doi: 10.1007/BF02813595
1991LJ01 Phys.Lett. 272B, 1 (1991) A.Ljubicic, D.Kekez, B.A.Logan A New Look at Nuclear Excitation in an Electron Transition NUCLEAR STRUCTURE 237Np, 197Au, 189Os; calculated electron transition associated nuclear excitation probability. Comparison with data.
doi: 10.1016/0370-2693(91)91002-D
1991ZL01 Phys.Rev.Lett. 67, 560 (1991) I.Zlimen, A.Ljubicic, S.Kaucic, B.A.Logan Evidence for a 17-keV Neutrino RADIOACTIVITY 71Ge [from Ge(n, γ)]; measured internal bremsstrahlung spectrum; deduced 17.2 keV neutrino evidence, mixing ratio.
doi: 10.1103/PhysRevLett.67.560
1990KR01 Phys.Rev. C41, 771 (1990) M.Krcmar, S.Kaucic, T.Tustonic, A.Ljubicic, B.A.Logan, M.Bistrovic Resonant and Nonresonant Contributions to the Photoactivation of 111Cd NUCLEAR REACTIONS 111Cd(γ, γ'), E=396 keV; measured isomer excitation probability; deduced nonresonant contributions. Photoactivation, 60Co source.
doi: 10.1103/PhysRevC.41.771
1990ZL01 Fizika(Zagreb) 22, 423 (1990) I.Zlimen, A.Ljubicic, S.Kaucic, B.A.Logan Search for Neutrinos with Masses in the Range of 15 to 45 keV RADIOACTIVITY 55Fe(EC); measured internal bremsstrahlung; deduced 15-45 keV neutrino mass range limits.
1989DI05 Appl.Radiat.Isot. 40, 247 (1989) W.R.Dixon, R.S.Storey, L.van der Zwan, B.A.Logan Energy of the First Excited State of 151Eu RADIOACTIVITY 151Sm(β-); measured γ-spectra. 151Eu deduced level, transition, β-decay branching. Hyperpure Ge, Si(Li) detectors.
doi: 10.1016/0883-2889(89)90156-1
1989DO08 Nucl.Instrum.Methods Phys.Res. A280, 384 (1989) J.Dobrinic, N.Orlic, S.Kaucic, D.Kekez, A.Ljubicic, B.A.Logan Angular Correlation of Double Internal Bremsstrahlung in the Electron Capture Decay of 55Fe RADIOACTIVITY 55Fe(EC); measured γγ(θ), double internal bremsstrahlung. NaI(Tl) counters.
doi: 10.1016/0168-9002(89)90937-6
1989LJ01 Fizika(Zagreb) A21, 413 (1989) A.Ljubicic, D.Miljanic, B.A.Logan, E.H.Nolte Proposal for the Search of Small Violation of the Pauli Exclusion Principle in Nuclei
1989PI14 Nucl.Phys. A504, 103 (1989) Calculation of Nuclear Excitation in an Electron Transition NUCLEAR STRUCTURE 189Os, 197Au, 237Np, 193Ir; calculated nuclear excitation probability during electron transition.
doi: 10.1016/0375-9474(89)90284-4
1988HO17 Phys.Lett. 214B, 490 (1988) Positron Annihilation and Nuclear Excitation NUCLEAR STRUCTURE 115In, 176Lu; calculated level excitation σ following positron-electron annihilation.
doi: 10.1016/0370-2693(88)90105-0
1988ZL01 Phys.Scr. 38, 539 (1988) I.Zlimen, S.Kaucic, A.Ljubicic, B.A.Logan Search for Neutrinos with Masses in the Range of 16.4 → 17.4 keV RADIOACTIVITY 55Fe(EC); measured internal bremsstrahlung; deduced limit on fraction of 16.4-17.4 keV neutrino mass.
doi: 10.1088/0031-8949/38/4/005
1987HO02 Phys.Rev. C35, 341 (1987) S.Holjevic, B.A.Logan, A.Ljubicic Nuclear Level Excitation during Charge Nonconservation NUCLEAR REACTIONS 127I(e, γ), E=511 keV; measured γ spectra following K-capture. 127I levels deduced excitation during charge nonconservation, charge nonconserving T1/2. NaI(Tl) counter.
doi: 10.1103/PhysRevC.35.341
1987KA12 Phys.Rev. C35, 1661 (1987) Nuclear Excitation in Positron-K-Electron Annihilation ATOMIC PHYSICS Sn; calculated positron-K-electron annihilation σ. Coulomb field, relativistic effects.
doi: 10.1103/PhysRevC.35.1661
1987KR05 Nucl.Instrum.Methods Phys.Res. A255, 99 (1987) M.Krcmar, A.Ljubicic, B.A.Logan, M.Bistrovic Photoactivation Investigations with 113In and 87Sr NUCLEAR REACTIONS 113In, 87Sr(γ, γ'), E=radioactive source; measured photoactivation σ. 113In, 87Sr deduced isomer excitation mechanism. Ge(Li) detector, 60Co source.
doi: 10.1016/0168-9002(87)91082-5
1986KE16 Phys.Rev. C34, 1446 (1986) D.Kekez, K.Pisk, A.Ljubicic, B.A.Logan Nuclear Deexcitation via an Inelastic Electronic Bridge NUCLEAR STRUCTURE 93Nb; calculated isomer M4 transition properties. Inelastic electron bridge mechanism.
doi: 10.1103/PhysRevC.34.1446
1986KR01 Phys.Rev. C33, 293 (1986) M.Krcmar, A.Ljubicic, B.A.Logan, M.Bistrovic Photoactivation of Isomeric Levels in 113In and 87Sr NUCLEAR REACTIONS 87Sr, 113In(γ, γ'), E ≈ resonance; measured Eγ, Iγ, photoactivation σ; deduced isomer level production mechanism. Intense 60Co source.
doi: 10.1103/PhysRevC.33.293
1986KR11 Fizika(Zagreb) 18, 171 (1986) M.Krcmar, A.Ljubicic, K.Pisk, B.A.Logan, M.Bistrovic Secondary Photon-Atom Contributions to Nonresonant Excitation of 115In Isomeric Level NUCLEAR REACTIONS 115In(γ, γ'), E=radioactive source; measured isomer nonresonant excitation number per unit time; deduced photon-atom interaction contribution. Various mechanism calculations. Ge(Li) detector, 60Co source.
1985HO25 Fizika(Zagreb) 17, 231 (1985) Photon Induced Internal Bremsstrahlung in Electron Capture NUCLEAR STRUCTURE 193Pt, 163Ho; calculated photon induced internal bremsstrahlung σ following EC.
1985KE06 Phys.Rev.Lett. 55, 1366 (1985) D.Kekez, A.Ljubicic, K.Pisk, B.A.Logan Nuclear Deexcitation via the Electronic-Bridge Mechanism RADIOACTIVITY 93mNb(IT); measured Eγ, Iγ, E X-ray, I X-ray; deduced direct to inelastic electron bridge effect decay relative probability. Large well-type NaI(Tl) crystal, Si(Li) detector.
doi: 10.1103/PhysRevLett.55.1366
1985OR07 Nucl.Phys. A443, 397 (1985) N.Orlic, S.Kaucic, A.Ljubicic, K.Pisk, B.A.Logan Double Internal Bremsstrahlung in the Electron-Capture Decay of 131Cs RADIOACTIVITY 131Cs(EC); measured double internal bremsstrahlung following EC. Calculated 1s, 2s, 2p, 3p initial electron state contributions.
doi: 10.1016/0375-9474(85)90407-5
1985PI01 Nucl.Phys. A433, 383 (1985) Internal Bremsstrahlung and Double Internal Bremsstrahlung in Initial p-State Electron Capture RADIOACTIVITY 55Fe, 131Cs(EC); calculated internal, double internal bremsstrahlung γ-spectra.
doi: 10.1016/0375-9474(85)90272-6
1985PI06 Phys.Rev. C32, 83 (1985) K.Pisk, M.Krcmar, A.Ljubicic, B.A.Logan Nonradiative versus Radiative Nuclear Excitation in the Positron-K-Electron Annihilation NUCLEAR REACTIONS 115In(γ, γ), E=positron spectrum; calculated radiative to nonradiative level excitation probabilities.
doi: 10.1103/PhysRevC.32.83
1983PI02 Phys.Rev. C27, 1260 (1983) Autoionization Accompanying Emission of Internal Bremsstrahlung in K Capture RADIOACTIVITY 37Ar(EC); 55Fe(EC); calculated simultaneous inner bremsstrahlung, autoionization probability. Feynman diagrams.
doi: 10.1103/PhysRevC.27.1260
1982KR06 Phys.Rev. C25, 2097 (1982) M.Krcmar, A.Ljubicic, K.Pisk, B.A.Logan, M.Vrtar Photoactivation of 111Cd NUCLEAR REACTIONS 111Cd(γ, γ'), E ≈ resonance; measured Eγ, Iγ, σ(E); deduced nonresonant process dominance, isomer excitation probability. 111Cd level deduced Γ. Photoactivation, 60Co source.
doi: 10.1103/PhysRevC.25.2097
1982LO10 Z.Phys. A305, 295 (1982) The Mechanism for Pair Production in the α-Decay of 241Am RADIOACTIVITY 241Am; analyzed pair production amplitude following α-decay; deduced Coulomb effects.
doi: 10.1007/BF01419076
1982RO17 Nucl.Phys. A390, 43 (1982) Z.Roller, K.Pisk, A.Ljubicic, B.A.Logan Experimental and Theoretical Investigations of Double Internal Bremsstrahlung in Electron Capture RADIOACTIVITY 37Ar(EC); measured double IB(θ=90°) following electron capture. Calculated 1s, 2s, 2p, 3p electron contributions.
doi: 10.1016/0375-9474(82)90605-4
1981LJ01 Phys.Rev. C23, 2238 (1981) Photoactivation Investigations with 115In NUCLEAR REACTIONS 115In(γ, γ'), E ≈ resonance; measured σ(E), Eγ, Iγ; deduced nonresonant process dominance. 115In level deduced Γ. 60Co source, photoactivation.
doi: 10.1103/PhysRevC.23.2238
1981OR03 J.Phys.(London) G7, 1429 (1981) N.Orlic, B.A.Logan, A.Ljubicic, S.Lulic, K.Kvastek Internal Conversion Coefficients for Transitions in the Decay of 146Pm RADIOACTIVITY 146Pm; measured I(ce), γ-spectra. 146Nd, 146Sm transition deduced ICC. Ge(Li), Si(Li) detectors.
doi: 10.1088/0305-4616/7/10/020
1980DI12 Phys.Rev. C22, 1279 (1980) W.R.Dixon, R.S.Storey, B.A.Logan E2/M1 Mixing Ratio for the 1459 → 110 keV Transition in 19F NUCLEAR REACTIONS 19F(p, p'γ), E=2.78 keV; measured γ(θ), linear polarization. 19F transition deduced δ, B(E2).
doi: 10.1103/PhysRevC.22.1279
1979LO13 Phys.Rev. C20, 1957 (1979) Validity of the Pauli Exclusion Principle for Nucleons RADIOACTIVITY 12C; measured T1/2; deduced upper limit for violation of Pauli principle.
doi: 10.1103/PhysRevC.20.1957
1977LO01 Can.J.Phys. 55, 142 (1977) B.A.Logan, W.R.Dixon, R.S.Storey, A.Ljubicic The 2506-2159 keV Transition in 60Ni Following Beta Decay of 60Co RADIOACTIVITY 60Co; measured Eγ, Iγ, γγ-coin; deduced β branching, 60Ni levels deduced γ-branching.
doi: 10.1139/p77-017
1977LO14 Phys.Rev. C16, 2078 (1977) B.A.Logan, A.Ljubicic, K.Pisk, Z.Roller-Ivanovic Angular Correlation of Double Internal Bremsstrahlung in Electron Capture RADIOACTIVITY 37Ar; measured double IB(θ).
doi: 10.1103/PhysRevC.16.2078
1977RO24 Nucl.Phys. A291, 85 (1977) Z.Roller-Ivanovic, A.Ljubicic, B.A.Logan Internal Bremsstrahlung in the Electron Capture Decay of 145Sm RADIOACTIVITY 145Sm; measured normalized, total IB for EC decay to 61-keV level of 145Pm.
doi: 10.1016/0375-9474(77)90200-7
1977RO29 Phys.Rev. C16, 2376 (1977) Z.Roller-Ivanovic, A.Ljubicic, V.Paar, B.A.Logan Low-Lying Energy Levels of 145Pm RADIOACTIVITY 145Sm; measured Eγ, Iγ. 145Pm deduced levels. Ge(Li) detector.
doi: 10.1103/PhysRevC.16.2376
1976LJ03 Phys.Rev. C13, 881 (1976) A.Ljubicic, M.Jurcevic, M.Vlatkovic, B.A.Logan K Shell Autoionization in the Beta Decay of 36Cl RADIOACTIVITY 36Cl; measured K-shell autoionization probability.
doi: 10.1103/PhysRevC.13.881
1976LO01 Phys.Rev. C13, 361 (1976) Effects of Low-Energy Phenomena of Some Recent Results Obtained in High-Energy Physics RADIOACTIVITY 16N, 14O, 18Ne; analyzed possible uses of decays to investigate some fundamental processes.
doi: 10.1103/PhysRevC.13.361
1976PI08 Nucl.Phys. A267, 77 (1976) Theoretical Investigations of Double Internal Bremsstrahlung in Electron Capture RADIOACTIVITY 37Ar; calculated γγ(θ), energy distribution of γ emitted in double internal bremsstrahlung EC.
doi: 10.1016/0375-9474(76)90644-8
1974LJ01 Can.J.Phys. 52, 1152 (1974) A.Ljubicic, D.Martel, R.T.Jones, B.A.Logan K-Shell Autoionization in the Beta Decay of 204Tl RADIOACTIVITY 204Tl; measured K-capture probability P(K).
1974LJ02 Nucl.Phys. A236, 158 (1974) A.Ljubicic, R.T.Jones, B.A.Logan Double Internal Bremsstrahlung in Electron Capture RADIOACTIVITY 37Ar; measured γγ-coin; deduced double internal bremsstrahlung probability.
doi: 10.1016/0375-9474(74)90225-5
1973DI19 Nucl.Instrum.Methods 113, 149 (1973) W.R.Dixon, R.S.Storey, A.Ljubicic, R.T.Jones, B.A.Logan Improved Quality of Some Sources of Linearly Polarized Photons NUCLEAR REACTIONS 24Mg(p, p'γ), E=1.95-3.1 MeV; 56Fe(p, p'γ), E=2.8-4.0 MeV; measured σ(E;θ). 24Mg, 56Fe transitions deduced p.
doi: 10.1016/0029-554X(73)90492-8
1973LJ01 Phys.Rev. C7, 1541 (1973) Pair Production in Alpha Decay RADIOACTIVITY 241Am; measured annihilation radiation, deduced probability of pair production.
doi: 10.1103/PhysRevC.7.1541
1972LO15 Nucl.Instrum.Methods 102, 353 (1972) The Optimisation of Possible Tests of the Validity of Time-Reversal
doi: 10.1016/0029-554X(72)90735-5
1971LO18 Can.J.Phys. 49, 2612 (1971) Detection of the Plane of Polarization of 121 keV Linearly Polarized Photons RADIOACTIVITY 75Se; measured γ-linear polarization; deduced polarization plane.
doi: 10.1139/p71-312
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