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NSR database version of April 27, 2024.

Search: Author = A.Filevich

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1999GA11      Phys.Rev. C59, 1999 (1999)

G.Garcia-Bermudez, M.A.Cardona, A.Filevich, R.V.Ribas, H.Somacal, L.Szybisz

Transition Strengths and Signature Inversion in Odd-Odd ⁷⁴Br

NUCLEAR REACTIONS ⁶⁰Ni(¹⁶O, np), E=50 MeV; measured Doppler-shifted Eγ, Iγ. ⁷⁴Br deduced high-spin levels T_1/2, B(M1), B(E2), branching ratios, signature inversion. Recoil-distance technique. Comparisons with neighboring nuclides.

doi: 10.1103/PhysRevC.59.1999
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1998KA19      Phys.Rev. C57, 2189 (1998)

R.A.Kaye, J.B.Adams, A.Hale, C.Smith, G.Z.Solomon, S.L.Tabor, G.Garcia-Bermudez, M.A.Cardona, A.Filevich, L.Szybisz

Transition Strengths in ⁸⁶Nb and ⁸⁶Zr

NUCLEAR REACTIONS ⁵⁸Ni(³²S, n3p), (³²S, 4p), E=130 MeV; measured Eγ, Iγ, recoil-distance spectra. ⁸⁶Nb, ⁸⁶Zr deduced transitions T_1/2, B(E2), configurations. Cranked shell model calculations.

doi: 10.1103/PhysRevC.57.2189
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1996JO05      Phys.Rev. C53, 1541 (1996)

G.D.Johns, K.A.Christian, R.A.Kaye, S.L.Tabor, G.Garcia-Bermudez, M.A.Cardona, A.Filevich, H.Somacal, L.Szybisz

Evolution of Collectivity in ⁸²Y and ⁸²Sr

NUCLEAR REACTIONS ⁵⁸Ni(²⁷Al, n2p), (²⁷Al, 3p), E=90 MeV; measured Eγ, recoil distance. ⁸²Y, ⁸²Sr deduced levels, T_1/2, B(λ), collectivity features.

doi: 10.1103/PhysRevC.53.1541
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1995GA06      Phys.Rev. C51, 1181 (1995)

G.Garcia-Bermudez, H.Somacal, M.A.Cardona, A.Filevich, E.Achterberg, L.Szybisz

πg_9/2 (x) νg_9/2 Multiplet: Nuclear structure of ⁸²Y

NUCLEAR REACTIONS ⁵⁸Ni(²⁷Al, n2p), E=75-105 MeV; ⁶⁰Ni(²⁸Si, npα), E=100-130 MeV; ⁵⁸Ni(²⁸Si, n3p), E=95-120 MeV; measured γγ-, nγ-coin, Eγ, Iγ, σ(E), γγ(t), γ(θ). ⁸²Y deduced high-spin levels, J, π, configuration. Comparison with other nuclei.

doi: 10.1103/PhysRevC.51.1181
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1993GA19      Phys.Rev. C48, 1623 (1993)

G.Garcia-Bermudez, M.A.Cardona, R.V.Ribas, A.Filevich, E.Achterberg, L.Szybisz

Level Structure of ⁸⁹Mo

NUCLEAR REACTIONS ⁶⁰Ni(³²S, n2p), E=110 MeV; measured Eγ, Iγ, γγ-, γ-coin, Iγ(θ). ⁸⁹Mo deduced levels, J, π, configuration. Hyperpure Ge detectors.

doi: 10.1103/PhysRevC.48.1623
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1990CA16      Phys.Rev. C41, 2403 (1990)

M.A.Cardona, G.Garcia Bermudez, A.Filevich, E.Achterberg

Transition Strengths in ⁷⁹Sr

NUCLEAR REACTIONS ⁵⁴Fe(²⁸Si, n2p), E=97 MeV; measured Eγ, Iγ, recoil distance Doppler shift. ⁷⁹Sr levels deduced T_1/2, B(E2), transition quadrupole moments.

doi: 10.1103/PhysRevC.41.2403
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1990CA27      Phys.Rev. C42, 591 (1990)

M.A.Cardona, G.Garcia Bermudez, A.Filevich, E.Achterberg

Lifetime Measuremens in ⁷⁵Kr and Systematic Study of Krypton Isotopes

NUCLEAR REACTIONS ⁵⁴Fe(²⁴Mg, n2p), E=75 MeV; measured Eγ, Iγ, recoil distance Doppler shift. ⁷⁵Kr levels deduced T_1/2, B(E2). Enriched target. Triaxial rotor-plus-quasiparticle model.

NUCLEAR STRUCTURE ^75,77,79Kr; calculated levels, B(λ). Triaxial rotor-plus-quasiparticle model.

doi: 10.1103/PhysRevC.42.591
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1990GA18      Nucl.Instrum.Methods Phys.Res. B47, 439 (1990)

G.Garcia Bermudez, D.Abriola, M.Alurralde, M.A.Cardona, A.Filevich, H.Somacal

The Coulomb Excitation Backscattering Spectrometry Technique for the Study of the Surfaces of Materials

NUCLEAR REACTIONS Ag, Pd(S, S'), E=90 MeV; measured Eγ, Iγ following Coulomb excitation. Backscattering spectrometry technique.

doi: 10.1016/0168-583X(90)90624-4
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1990GA22      Nucl.Instrum.Methods Phys.Res. A292, 367 (1990)

G.Garcia Bermudez, M.A.Cardona, A.Filevich

A Simple Plunger Device and Error Analysis of Nuclear Lifetime Measurements

NUCLEAR REACTIONS ⁶³Cu(¹⁹F, 2n2p), E=70 MeV; measured γ-decay curves. ⁷⁸Kr levels deduced T_1/2. Monte Carlo fits to data, plunger device.

doi: 10.1016/0168-9002(90)90393-K
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1988JA02      Phys.Lett. 202B, 185 (1988)

H.C.Jain, L.O.Norlin, U.Rosengard, A.Filevich, E.Dafni

g-Factor and Structure of the 2256.3 keV High-Spin K-Isomer in ¹⁸²Re

NUCLEAR REACTIONS ¹⁸¹Ta(α, 3n), E=45 MeV; measured γ(θ, H, t). ¹⁸²Re deduced isomer T_1/2, J, π, configuration.

doi: 10.1016/0370-2693(88)90004-4
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1985BE06      Z.Phys. A320, 467 (1985)

M.Behar, A.M.J.Ferrero, A.Filevich, A.O.Macchiavelli

High Spin States in ⁹⁷Rh

NUCLEAR REACTIONS, ICPND ⁹⁶Ru(α, p), (α, n), (α, 2n), (α, np), E=30-55 MeV; measured σ(E). ⁹⁶Ru(α, 2np), E=30-55 MeV; measured Eγ, Iγ, σ(E), γγ-coin, γ(θ). ⁹⁷Rh deduced levels, J, π. Enriched target, Ge(Li) detectors.

doi: 10.1007/BF01415724
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1983BE63      Z.Phys. A314, 111 (1983)

M.Behar, A.M.J.Ferrero, A.Filevich, A.O.Macchiavelli

On the Assignment of High-Spin Cascades to ⁹⁸Rh and ⁹⁸Pd Isotopes

NUCLEAR REACTIONS, ICPND ⁹⁶Ru(α, n), (α, 2n), (α, np), (α, p), (α, 3n), E=30-55 MeV; measured Eγ, Iγ, σ(E, Eγ, θ), γγ-coin, residual production σ(E). ⁹⁹Ru(d, xnyp), E=20-28 MeV; measured Eγ, Iγ, σ(E, Eγ, θ), γγ-coin. ⁹⁸Rh, ⁹⁸Pd deduced levels, J, π, band structure. Enriched targets, Ge(Li) detectors.

doi: 10.1007/BF01411838
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1982BE01      Nucl.Phys. A373, 483 (1982)

M.Behar, A.Ferrero, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti

High-Spin States in ⁹⁴Tc

RADIOACTIVITY ⁹⁴Tc [from ⁹³Nb(α, 3n), E=45 MeV]; measured Eγ, Iγ, γ(θ), σ(Eγ), γγ-coin, T_1/2; deduced levels, J, π, γ-branching.

doi: 10.1016/0375-9474(82)90545-0
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1982BE03      Nucl.Phys. A376, 131 (1982)

M.Behar, D.Abriola, A.Filevich, G.Garcia Bermudez, A.J.Kreiner, M.A.J.Mariscotti, J.A.Pinston, D.Barneoud

In-Beam Study of ⁷⁸Br

NUCLEAR REACTIONS, ICPND ⁷⁷Se(α, 2npγ), E=40-50 MeV; measured σ(E, Eγ), Eγ, Iγ, Iγ(θ, t), γγ-coin; ⁷⁷Se(α, 2n), (α, np), (α, 3n), (α, 2np), (α, 4n), (α, 3np), E=30-55 MeV; measured gamma ray yield. ⁷⁸Br deduced levels, J, T_1/2. Enriched targets.

doi: 10.1016/0375-9474(82)90536-X
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1982BE48      Phys.Rev. C26, 1417 (1982)

M.Behar, A.Filevich, A.O.Macchiavelli, L.Szybisz, P.Thieberger

High-Spin States in ⁷⁹Kr Populated by the ⁷⁸Se(α, 3n) Reaction and Interpreted in Terms of a Quasiparticle-Plus-Rotor Model

NUCLEAR REACTIONS ⁷⁸Se(α, 3n), E=30-55 MeV; measured σ(Eγ, E), γ(θ), Eγ, Iγ, γγ-coin. ⁷⁹Kr deduced levels, J, rotational band, δ, branching ratios, (g(k)-g(R)/Q₀)². Quasiparticle plus rotor model. Enriched targets.

doi: 10.1103/PhysRevC.26.1417
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1981BE37      Nucl.Phys. A366, 61 (1981)

M.Behar, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti, E.Ventura

High-Spin States in ⁴⁹Ti and the Empirical (f_7/2(n)) Model

NUCLEAR REACTIONS ⁴⁸Ca(α, 3n), E=30-55 MeV; measured σ(E, Eγ, θ, t), Eγ, Iγ, γγ-coin. ⁴⁹Ti deduced levels, J, T_1/2, δ. Enriched ⁴⁸Ca target, Ge(Li) detector.

doi: 10.1016/0375-9474(81)90487-5
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1981GA11      Phys.Rev. C23, 2024 (1981)

G.Garcia Bermudez, A.Filevich, A.J.Kreiner, M.A.J.Mariscotti, C.Baktash, E.der Mateosian, P.Thieberger

High Spin States in ⁷⁴Br

NUCLEAR REACTIONS ⁶⁰Ni(¹⁶O, np), E=40-55 MeV; measured Eγ, Iγ(θ, t), γγ(t). ⁷⁴Br deduced levels, J, π, T_1/2. Enriched target, Ge(Li) detector.

doi: 10.1103/PhysRevC.23.2024
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1980BE08      Nucl.Phys. A337, 253 (1980)

M.Behar, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti, L.Szybisz

Level Structure of ⁸²Rb, Studied Through the ⁸¹Br(α, 3n) Reaction

NUCLEAR REACTIONS ⁸¹Br(α, 3n), E=30-55 MeV; measured σ(E, Eγ, θ, t), Eγ, Iγ, γγ-coin. ⁸²Rb deduced levels, J, T_1/2. Enriched target.

doi: 10.1016/0375-9474(80)90054-8
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1980GA11      J.Phys.(London) G6, L89 (1980)

G.Garcia Bermudez, D.Abriola, M.Behar, M.C.Berisso, J.Fernandez Niello, A.Filevich, M.A.J.Mariscotti

High-Spin States in ⁷⁸Br

NUCLEAR REACTIONS ⁷⁷Se(α, 2np), E=30-55 MeV; measured Eγ, Iγ, T_1/2, γγ-coin, γ(θ). ⁷⁸Br deduced levels, J, π, γ-branching, ICC.

doi: 10.1088/0305-4616/6/4/007
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1980KR02      Phys.Rev. C21, 933 (1980)

A.J.Kreiner, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti, C.Baktash, E.der Mateosian, P.Thieberger

High-Spin Band Structure of ¹⁹²Tl

NUCLEAR REACTIONS ¹⁸¹Ta(¹⁸O, xnγ), E=105-125 MeV; ¹⁸¹Ta(¹⁶O, xnγ), E=95-105 MeV; measured Eγ, Iγ, σ(E, Eγ, θγ), γγ-coin. ¹⁹²Tl levels deduced δ, J, π, T_1/2. Natural target. Ge(Li) detectors.

doi: 10.1103/PhysRevC.21.933
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1978BE08      Phys.Rev. C17, 516 (1978)

M.Behar, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti

Evidence for the First 9/2⁺ State in ⁷⁵Br and Maximum Deformation at N ≈ 42

NUCLEAR REACTIONS ⁷⁵As(α, 4nγ), E=30-55 MeV; measured σ(E, Eγ, θ), γ(t), γγ-coin. ⁷⁵Br deduced levels, J, π, T_1/2. Ge(Li) detectors.

doi: 10.1103/PhysRevC.17.516
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1978BE34      Nucl.Instrum.Methods 152, 531 (1978)

M.Behar, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti, J.Monico, J.Sinderman, S.Tau

Digital Multidiscriminator for Use in Gamma-Gamma Coincidence Experiments

NUCLEAR REACTIONS ⁷⁰Ge(α, np), E=30-55 MeV; measured γγ-coin. ⁷²As deduced levels.

doi: 10.1016/0029-554X(78)90055-1
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1978FI03      Nuclear Phys. A295, 513 (1978)

A.Filevich, A.Ceballos, M.A.J.Mariscotti, P.Thieberger, E.der Mateosian

Lifetimes and g-Factors of the 6^- and 7^- Isomers in ⁶⁶Ga and ⁶⁸Ga

NUCLEAR REACTIONS ⁵⁶Fe(¹³C, 2np), E=35-60 MeV; ⁵⁶Fe(¹⁵N, n2p), E=50-75 MeV; measured γ(θ, H, t). ^66,68Ga levels deduced T_1/2, g. TDPAD. Natural target, Ge(Li) detector. Pulsed beam.

doi: 10.1016/0375-9474(78)90189-6
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1978FI09      Nucl.Phys. A309, 285 (1978)

A.Filevich, M.Behar, G.Garcia Bermudez, M.A.J.Mariscotti, E.der Mateosian, P.Thieberger

In-Beam Study of ⁷⁰As

NUCLEAR REACTIONS ⁶⁹Ga(α, 3nγ), ⁶⁰Ni(¹²C, np), ⁶³Cu(¹⁰B, 2np), E=30-55 MeV; measured σ(E, Eγ, θ, t), Eγ, Iγ, γγ-coin. ⁷⁰As deduced levels, J, T_1/2. Enriched ⁶⁹Ga, ⁶⁰Ni, ⁶³Cu targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(78)90549-3
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1977BE18      Nucl.Phys. A282, 331 (1977)

M.Behar, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti

Level Structure of ⁷⁶Br from the ⁷⁵As(α, 3nγ) Reaction

NUCLEAR REACTIONS ⁷⁵As(α, 3nγ), E=30-55 MeV; measured σ(E, Eγ, θ, t). ⁷⁶Br deduced levels, J, π, λ, δ.

doi: 10.1016/0375-9474(77)90219-6
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1977BE38      Phys.Rev. C16, 1590 (1977)

M.Behar, A.Filevich, G.Garcia Bermudez, C.Alonso Arias

Level Spins and Multipole Mixing Ratios of the Transitions in ⁹⁴Mo

RADIOACTIVITY ⁹⁴Tc [from ⁹³Nb(α, 3n)]; measured L(p), γγ(θ). ⁹⁴Mo levels deduced J, π, δ. Ge(Li), NaI(Tl) detectors.

doi: 10.1103/PhysRevC.16.1590
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1977BE41      Nucl.Phys. A287, 255 (1977)

M.Behar, A.Filevich, G.Garcia Bermudez, M.A.J.Mariscotti

Level Structure of ⁸⁰Rb Studied with the ⁷⁹Br(α, 3n) Reaction

NUCLEAR REACTIONS ⁷⁹Br(α, 3n), E=30 to 55 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. ⁸⁰Rb deduced levels, J, π, δ, Q. Enriched target. Ge(Li) detectors.

doi: 10.1016/0375-9474(77)90495-X
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1977FI14      Nucl.Instrum.Methods 141, 521 (1977)

A.Filevich, M.Behar, G.Garcia Bermudez

Gamma-Gamma Polarized Directional Correlations Set-up Using a Planar Ge(Li) Detector as the Polarimeter

RADIOACTIVITY ¹²⁴I; measured γγ(θ). ¹²⁴Te level deduced J, π.

doi: 10.1016/0029-554X(77)90648-6
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1976BE03      Phys.Rev. C13, 767 (1976)

M.Behar, G.Garcia Bermudez, A.Filevich, M.C.Cambiaggio

Spin of the 1248- and 1958-keV Levels in ¹²⁴Te Determined from Gamma-Gamma Directional and Polarization-Directional Correlations

RADIOACTIVITY ¹²⁴Sb; measured γγ-linear polarization, γγ(θ). ¹²⁴Te levels deduced J, π, δ. Ge(Li) detectors.

doi: 10.1103/PhysRevC.13.767
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1976BE15      Nucl.Phys. A261, 317 (1976)

M.Behar, A.Filevich, G.Garcia Bermudez, A.M.Hernandez, M.A.J.Mariscotti

Level Structure of ⁷³Se from the ⁷²Ge(α, 3nγ) Reaction

NUCLEAR REACTIONS ⁷²Ge(α, 3nγ), E=30-55 MeV; measured σ(E, Eγ, θ), γγ-coin. ⁷³Se deduced levels, J, π, λ, γ-branching. Enriched Ge target. Ge(Li) detector.

doi: 10.1016/0375-9474(76)90573-X
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1976GA12      Phys.Rev. C13, 2461 (1976)

G.Garcia Bermudez, A.Filevich, M.Behar

Spins of the 2350, 2516, and 2547 keV Levels in ¹⁴⁰Ce Determined from γ-γ Directional and Polarization-Directional Correlations

RADIOACTIVITY ¹⁴⁰La; measured γγ(θ), linear polarization correlation. ¹⁴⁰Ce levels deduced J, π, δ. Ge(Li) detectors.

doi: 10.1103/PhysRevC.13.2461
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1976GA23      Phys.Rev. C14, 1776 (1976)

G.Garcia Bermudez, M.Behar, A.Filevich, M.A.J.Mariscotti

Level Structure of ⁷⁴As from the ⁷²Ge(α, npγ) Reaction

NUCLEAR REACTIONS ⁷²Ge(α, npγ), E=30-55 MeV; measured σ(E, Eγ, θ), γγ-coin, γ(t). ⁷⁴As deduced levels, J, π, T_1/2. Ge(Li) detectors, enriched targets.

doi: 10.1103/PhysRevC.14.1776
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1976MA20      Nucl.Phys. A260, 109 (1976)

M.A.J.Mariscotti, M.Behar, A.Filevich, G.Garcia Bermudez, A.M.Hernandez, C.Kohan

Level Structure of ⁷²As Studied with the (α, xnp) Reaction

NUCLEAR REACTIONS ⁷⁰Ge(α, npγ), ⁷²Ge(α, 3npγ), E=30-55 MeV; measured Eγ, Iγ, σ(E, Eγ, θ, t), γγ-coin. ⁷²As deduced levels, J, π, T_1/2. Enriched Ge targets. Ge(Li) detector.

doi: 10.1016/0375-9474(76)90019-1
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1974FI18      Nucl.Instrum.Methods 122, 605 (1974)

A.Filevich, M.Lagos

Two Simple Circuits for in-Beam μs and ms Time Measurements

RADIOACTIVITY ^88mY; measured T_1/2.

doi: 10.1016/0029-554X(74)90532-1
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1973AB09      Nucl.Instrum.Methods 111, 125 (1973)

K.Abrahamsson, A.Filevich, K.-G.Rensfelt, J.Sztarkier

A Fast Beam Pulsing System for the Stockholm 225-cm Cyclotron

NUCLEAR REACTIONS ²⁰⁸Pb(α, 3nγ); measured γγ(θ, H, t). ²⁰⁹Po levels deduced g.

doi: 10.1016/0029-554X(73)90103-1
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1973BE32      Phys.Scr. 8, 5 (1973)

I.Bergstrom, J.Blomqvist, A.Filevich, C.G.Linden

High Spin Three Neutron Hole States in ²⁰⁵Pb of Configurations Containing the i₁₃/₂ Orbital

NUCLEAR REACTIONS ²⁰⁴Hg(α, 3nγ), E=10-45 MeV; measured Eγ, γ(t), σ(E), γγ-coin, γ(θ). ²⁰⁵Pb deduced levels, T_1/2, J, π, γ-multipolarities.

1972FI06      Nucl.Instrum.Methods 98, 601 (1972)

A.Filevich, K.-G.Rensfelt, J.Sztarkier

A Device for Melted Targets for in-Beam g-Factor Determinations

NUCLEAR REACTIONS ²⁰⁹Bi(α, 3nγ), E=43 MeV; measured αγ(θ, H, t).

doi: 10.1016/0029-554X(72)90251-0
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1972FI16      Phys.Scr. 5, 27 (1972)

A.Filevich, K.-G.Rensfelt, J.Sztarkier, K.Nakai, I.Bergstrom

The g-Factor of the 15- State in ²¹⁰At

NUCLEAR REACTIONS ²⁰⁹Bi(α, 3nγ), E not given; measured αγ(θ, H, t). ²¹⁰At level deduced g. Stroboscopic method.

doi: 10.1088/0031-8949/5/1-2/005
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1972NA08      Nucl.Phys. A189, 526 (1972)

K.Nakai, B.Herskind, J.Blomqvist, A.Filevich, K.-G.Rensfelt, J.Sztarkier, I.Bergstrom, S.Nagamiya

The g-Factor of the 12⁺ Isomeric State in ²⁰⁶Pb and the Effective Orbital g-Factor of the Neutron

NUCLEAR REACTIONS ²⁰⁴Hg(α, 2nγ), E=27 MeV; measured αγ(θ, H, t). ^206mPb deduced g, neutron effective orbital g.

doi: 10.1016/0375-9474(72)90311-9
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1972WI19      Phys.Scr. 5, 126 (1972)

K.Wikstrom, B.Fant, A.Filevich, K.-G.Rensfelt, J.Sztarkier, I.Bergstrom

Evidence for 15^- and 11⁺ Isomeric States of the πl(h₉/₂)² i₁₃/₂l₂₉/₂+ν(p₁/₂)^-1 and π(h₉/₂)³₂₁/₂-ν(p₁/₂)^-1 Configurations

NUCLEAR REACTIONS ²⁰⁹Bi(α, 3nγ), E=32-43 MeV; measured σ(E;Eγ, θ(γ)), αγ-delay. ^210mAt deduced levels, J, π, g, T_1/2, configurations.

1971BE37      Phys.Scr. 3, 11 (1971)

I.Bergstrom, J.Blomqvist, B.Fant, A.Filevich, G.Linden, K.-G.Rensfelt, J.Sztarkier, K.Wikstrom

E2 Core Polarization by Neutrons in the (i₁₃/₂)^-2 Configuration in ²⁰⁶Pb

NUCLEAR REACTIONS ²⁰⁴Hg(α, 2nγ), E = 26 MeV; measured Eγ, Iγ, αγ-delay. ²⁰⁶Pb deduced levels, T_1/2, B(EL), neutron E2 core polarization charge.

1971FI09      Nucl.Phys. A176, 155 (1971)

A.Filevich, J.Kownacki, H.Ryde

Hindrance Factor of the E2 6⁺ → 4⁺ Transition in ¹⁴⁶Gd

NUCLEAR REACTIONS ¹⁴⁴Sm(α, 2n), Eα=30-40 MeV; measured Eγ, Iγ(θ), αγ-delay. ¹⁴⁶Gd transition deduced T_1/2, hindrance factor. Enriched target.

doi: 10.1016/0375-9474(71)90737-8
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