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Search: Author = S.J.Robinson

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2021RO17      Int.J.Mod.Phys. E30, 2150047 (2021)

S.J.Q.Robinson, C.Fan, M.Harper, L.Zamick

On the vibrational model of 92Pd and comparison with 48Cr

NUCLEAR STRUCTURE 48Cr; analyzed available data; deduced yrast band are almost equally spaced suggesting a vibrational band.

doi: 10.1142/S0218301321500476
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2019ZA03      Int.J.Mod.Phys. E28, 1950002 (2019)

L.Zamick, S.Yeager, Y.Y.Sharon, S.J.Q.Robinson

Lawson method for obtaining wave functions and g factors of Ar isotopes

NUCLEAR STRUCTURE 38,40,44,46Ar; analyzed available data; deduced wave functions and magnetic g factors of excited states of Ar isotopes.

doi: 10.1142/S0218301319500022
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2016BE24      Phys.Rev. C 94, 034303 (2016)

N.Benczer-Koller, G.J.Kumbartzki, K.-H.Speidel, D.A.Torres, S.J.Q.Robinson, Y.Y.Sharon, J.M.Allmond, P.Fallon, I.Abramovic, L.A.Bernstein, J.E.Bevins, H.L.Crawford, Z.E.Guevara, A.M.Hurst, L.Kirsch, T.A.Laplace, A.Lo, E.F.Matthews, I.Mayers, L.W.Phair, F.Ramirez, A.Wiens

Magnetic moment and lifetime measurements of Coulomb-excited states in 106Cd

NUCLEAR REACTIONS 12C(106Cd, 106Cd'), E=410 MeV; measured particle spectra using Si surface-barrier detector, Eγ, Iγ, (particle)γ-coin using four clover HPGe detectors, g factors by the transient-field technique, level half-lives by DSAM at LBNL cyclotron facility. Coulomb excitation. 106Cd; deduced levels, J, B(E2). Comparison with large-scale shell-model, and collective model calculations.

doi: 10.1103/PhysRevC.94.034303
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2016KU05      Phys.Rev. C 93, 044316 (2016)

G.J.Kumbartzki, N.Benczer-Koller, K.-H.Speidel, D.A.Torres, J.M.Allmond, P.Fallon, I.Abramovic, L.A.Bernstein, J.E.Bevins, H.L.Crawford, Z.E.Guevara, G.Gurdal, A.M.Hurst, L.Kirsch, T.A.Laplace, A.Lo, E.F.Matthews, I.Mayers, L.W.Phair, F.Ramirez, S.J.Q.Robinson, Y.Y.Sharon, A.Wiens

Z = 50 core stability in 110Sn from magnetic-moment and lifetime measurements

NUCLEAR REACTIONS 12C(106Cd, 8Be)110Sn, 12C(106Cd, 12C)106Cd, E=390, 400, 410 MeV; measured particle spectra, Eγ, Iγ, (particle)γ-coin, γγ(θ), level half-lives using DSAM and lineshape analysis, g factors using transient field technique at LBNL 88-Inch Cyclotron facility, multi-layered target of carbon, gadolinium, tantalum and copper layers. 110Sn; deduced levels, J, π, B(E2), magnetic moments, configurations, no evidence for excitation of protons from the closed Z=50 core. Comparison with previous experimental results, and with shell model calculations. Systematics of B(E2) values for the first 2+ states in A=104-130, even-even Sn nuclei.

NUCLEAR MOMENTS 110Sn; measured g factors using transient field technique in 12C(106Cd, 8Be) reaction at 410 MeV, and using a multi-layered target; deduced magnetic moments. Comparison with shell model calculations. Systematics of g factors for the first 2+ states in A=104-130, even-even Sn nuclei.

doi: 10.1103/PhysRevC.93.044316
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2015ZA07      Phys.Rev. C 91, 064321 (2015)

L.Zamick, Y.Y.Sharon, S.J.Q.Robinson, M.Harper

Consequences of omitting spin-orbit partner configurations for B(E2) values and quadrupole moments in nuclei

NUCLEAR STRUCTURE 44,46,48Ti, 48,50Cr, 52Fe; calculated B(E2) and quadrupole moments for first 2+ and 4+ states using shell model with FPD6 and GXPF1 interactions, with full fp space, and truncated fp space by omitting the f5/2 orbital; deduced effects of omitting a spin-orbit partner in large-scale shell-model calculations.

doi: 10.1103/PhysRevC.91.064321
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2014HE20      Phys.Rev. C 90, 034307 (2014)

D.Hertz-Kintish, L.Zamick, S.J.Q.Robinson

B(E2, 4 → 2)/B(E2, 2 → 0) ratio in even-even nuclei: Apparent anomalous behavior of the chromium isotopes

NUCLEAR STRUCTURE 44,46,48Ti, 48,50Cr, 52Fe; analyzed B(E2)(4+ to 2+)/B(E2)(2+ to 0+) and Q(4+)/Q(2+) ratios for lowest lying states using experimental data, and theoretical values from rotational, vibrational, and shell model calculations.

doi: 10.1103/PhysRevC.90.034307
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2014KU10      Phys.Rev. C 89, 064305 (2014)

G.J.Kumbartzki, N.Benczer-Koller, S.Burcher, A.Ratkiewicz, S.L.Rice, Y.Y.Sharon, L.Zamick, K.-H.Speidel, D.A.Torres, K.Sieja, M.McCleskey, A.Cudd, M.Henry, A.Saastamoinen, M.Slater, A.Spiridon, S.Yu.Torilov, V.I.Zherebchevsky, G.Gurdal, S.J.Q.Robinson, S.D.Pain, J.T.Burke

Transition from collectivity to single-particle degrees of freedom from magnetic moment measurements on 8238Sr44 and 9038Sr52

NUCLEAR MOMENTS 82,90Sr, 78,86Kr; measured precession angles, g factors of first 2+ and 4+ states, second 2+ state in 78Kr by transient-field technique in Coulomb excitation and α-pickup reaction at K500-TAMU cyclotron facility. Comparison with shell-model calculations and previous experimental results. Systematics of g factors of first 2+ states in even-even nuclei with Z=30-48, N=30-70. Discussed proton subshell closures at Z=38 and Z=40.

NUCLEAR REACTIONS 12C(78Kr, 8Be), (78Kr, 78Kr'), E=249.6 MeV; 12C(86Kr, 8Be), (86Kr, 86Kr'), E=258.0, 266.6, 275.2 MeV; measured Eγ, Iγ, Eα, Iα, particle spectra, αγ-, (particle)γ-coin, angular correlations, precession angles, particle yields at Texas A-M cyclotron facility. 78,86Kr, 82,90Sr; deduced levels, g factors. Comparison with shell-model calculations and previous experimental results.

doi: 10.1103/PhysRevC.89.064305
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2014RO02      Phys.Rev. C 89, 014316 (2014)

S.J.Q.Robinson, T.Hoang, L.Zamick, A.Escuderos, Y.Y.Sharon

Shell model calculations of B(E2) values, static quadrupole moments, and g factors for a number of N=Z nuclei

NUCLEAR STRUCTURE 44Ti, 48Cr, 52Fe, 88Ru, 92Pd, 96Cd; calculated levels, J, π, B(E2), static quadrupole moments, g factors. Large-scale shell model calculations using GXFP1, FPD6, JUN45, and JJ4B interactions. Comparisons with predictions of rotational and vibrational models, and with available experimental data. Oblate structure of 88Ru.

doi: 10.1103/PhysRevC.89.014316
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2014ZA10      Phys.Rev. C 90, 027305 (2014)

L.Zamick, B.Kleszyk, Y.Y.Sharon, S.J.Q.Robinson

Spin and orbital g factors with a surface δ interaction

NUCLEAR STRUCTURE 86Kr; calculated orbital and spin g factors of the first 2+ and 4+ states by surface delta interaction (SDI) approach, and large-scale shell model wave functions for 2+ and 4+ states. Dominance of the orbital contribution in total g factor. Comparison with experimental data.

NUCLEAR MOMENTS 86Kr; calculated g factors of the first 2+ and 4+ states. Surface delta interaction (SDI), and large-scale shell model calculations.

doi: 10.1103/PhysRevC.90.027305
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2013GU23      Phys.Rev. C 88, 014301 (2013)

G.Gurdal, E.A.Stefanova, P.Boutachkov, D.A.Torres, G.J.Kumbartzki, N.Benczer-Koller, Y.Y.Sharon, L.Zamick, S.J.Q.Robinson, T.Ahn, V.Anagnostatou, C.Bernards, M.Elvers, A.Heinz, G.Ilie, D.Radeck, D.Savran, V.Werner, E.Williams

Measurements of g(41+, 22+)in 70, 72, 74, 76Ge: Systematics of low-lying structures in 30 ≤ Z ≤ 40 and 30 ≤ N ≤ 50 nuclei

NUCLEAR REACTIONS C, Mg(70Ge, 70Ge'), (72Ge, 72Ge'), (74Ge, 74Ge'), (76Ge, 76Ge'), E=165-225 MeV; measured Eγ, precession angles, angular correlations; deduced g factors. Natural C or Mg targets with mid layer of Gd or Fe and backing of Ta and Cu.

NUCLEAR MOMENTS 70,72,74,76Ge; measured g factors of first and second 2+ and first 4+ states using transient field (TF) technique following Coulomb excitation in inverse kinematics at WNSL-Yale facility. Systematics of g factors for neighboring nuclides of even-even N=32-50, Z=30-38. Comparison with large-scale shell-model, collective models, and IBA-II, and with previous experimental studies. No evidence for shell closure for neutrons at N=38 or N=40.

doi: 10.1103/PhysRevC.88.014301
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2013ZA08      Phys.Rev. C 87, 067302 (2013)

L.Zamick, A.Escuderos, S.J.Q.Robinson, Y.Y.Sharon, M.W.Kirson

Isobaric analog states in the f7/2 and g9/2 shells

NUCLEAR STRUCTURE 44,46Sc, 44,46Ca, 52Mn, 52Cr, 60Cu, 60Ni, 94Rh, 94Ru, 96Ag, 96Pd; calculated Coulomb energy estimates for pairs of nuclei using various mass formulas. 44,46Sc, 52Mn, 60Cu, 94Rh, 96Ag; calculated energies of isobaric analog states (IAS) with T=2 and 3 using binding energy formulas and Coulomb energies, and shell-model. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.067302
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2012KU14      Phys.Rev. C 85, 044322 (2012)

G.J.Kumbartzki, K.-H.Speidel, N.Benczer-Koller, D.A.Torres, Y.Y.Sharon, L.Zamick, S.J.Q.Robinson, P.Maier-Komor, T.Ahn, V.Anagnostatou, Ch.Bernards, M.Elvers, P.Goddard, A.Heinz, G.Ilie, D.Radeck, D.Savran, V.Werner, E.Williams

Structure of the Sr-Zr isotopes near and at the magic N=50 shell from g-factor and lifetime measurements in 8840Zr and 84, 86, 3888Sr

NUCLEAR REACTIONS 12C(84Sr, X)84Sr/86Sr/88Sr/88Zr, E=243-285 MeV; measured Eγ, Iγ, (12C)γ-, αγ-, γγ-coin, level half-lives by DSA, g factors. 84,86,88Sr, 88Zr; deduced levels, J, π, B(E2). Systematics of B(E2) values for first 2+ states in even-even N=40-62 Sr and Zr nuclei.

NUCLEAR MOMENTS 88Zr, 84,86,88Sr; measured g factors of 2+ and first 4+ states using transient field technique in inverse kinematics. Comparison with previous studies and with shell model calculations. Systematics of g factors of first 2+ states in even-even N=42-62 Sr and Zr nuclei.

doi: 10.1103/PhysRevC.85.044322
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2012KU24      Phys.Rev. C 86, 034319 (2012)

G.J.Kumbartzki, N.Benczer-Koller, D.A.Torres, B.Manning, P.D.O'Malley, Y.Y.Sharon, L.Zamick, C.J.Gross, D.C.Radford, S.J.Q.Robinson, J.M.Allmond, A.E.Stuchbery, K.-H.Speidel, N.J.Stone, C.R.Bingham

Transient field g factor and mean-life measurements with a rare isot ope beam of 126Sn

NUCLEAR REACTIONS C(124Sn, C'), (126Sn, C'), [124,126Sn secondary beams from U(p, X), E=50 MeV primary reaction], E=378 MeV; measured Eγ, Iγ, (particle)γ-coin, level half-lives by DSAM at HRIBF in ORNL. 124,126Sn; deduced levels, g factors, B(E2).

NUCLEAR MOMENTS 124,126Sn; measured precession angle, γγ(θ), g factor, level half-lives by DSAM. Coulomb excitation in inverse kinematics with transient field and Doppler shift attenuation technique. Comparison with large-scale shell-model and quasiparticle random-phase calculations. Systematics of g factors for first 2+ states in A=112-226 Sn isotopes.

doi: 10.1103/PhysRevC.86.034319
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2012TO01      Phys.Rev. C 85, 017305 (2012)

D.A.Torres, G.J.Kumbartzki, Y.Y.Sharon, L.Zamick, B.Manning, N.Benczer-Koller, K.-H.Speidel, T.Ahn, V.Anagnostatou, M.Elvers, P.Goddard, A.Heinz, G.Ilie, D.Radeck, D.Savran, V.Werner, G.Gurdal, M.J.Taylor, P.Maier-Komor, M.Hjorth-Jensen, S.J.Q.Robinson

Measurement of the 96Ru g(41+) factor and its nuclear structure interpretation

NUCLEAR REACTIONS 12C(96Ru, 96Ru'), E=343, 353 MeV; measured 12C spectra, Eγ, Iγ, (12C)g-coin, (12C)γ(θ), precession angle in transient magnetic field, half-life by DSAM. 96Ru; deduced level, half-life of first 2+, g factors of first 2+ and 4+ states, B(E2). Coulomb excitation in inverse kinematics. Comparison with large-scale shell-model calculations.

NUCLEAR MOMENTS 96Ru; measured g factors of first 2+ and 4+ states by transient magnetic field technique in inverse kinematics.

doi: 10.1103/PhysRevC.85.017305
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2012ZA04      J.Phys.:Conf.Ser. 337, 012036 (2012)

L.Zamick, Y.Y.Sharon, S.J.Q.Robinson

Anatomy of an Inversion - Argon Isotopes

NUCLEAR STRUCTURE 36,38,40,42,44,46Ar; calculated 2+ state energy, g factor. 41,43,45,47,49K; calculated (3/2)+-(1/2)+ proton splitting. 32S, 36Ar; calculated g factor. 46Ar; calculated B(E2). Calculations using WBT (Warburton and Brown) and SPDF-U (Nowacki and Poves and Nummela et al); compared with available data. Some other data and calculations also referred to.

doi: 10.1088/1742-6596/337/1/012036
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2011RO05      Phys.Rev. C 83, 027302 (2011)

S.J.Q.Robinson, L.Zamick, Y.Y.Sharon

Comparison of shell model results for some properties of even-even Ge isotopes

NUCLEAR STRUCTURE 70,72,74,76Ge; calculated levels, J, π, B(E2), static quadrupole moments using shell-model and JUN45 and JJ4B interactions in the fpg model space for protons and neutrons. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.027302
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2011TO09      Phys.Rev. C 84, 044327 (2011)

D.A.Torres, G.J.Kumbartzki, Y.Y.Sharon, L.Zamick, B.Manning, N.Benczer-Koller, G.Gurdal, K.-H.Speidel, M.Hjorth-Jensen, P.Maier-Komor, S.J.Q.Robinson, T.Ahn, V.Anagnostatou, M.Elvers, P.Goddard, A.Heinz, G.Ilie, D.Radeck, D.Savran, V.Werner

First g-factor measurements of the 21+ and the 41+ states of radioactive 100Pd

NUCLEAR REACTIONS 12C(96Ru, 8Be), E=350 MeV; measured particle spectra, Eγ, Iγ, αγ-, γγ-coin, γγ(θ), precession angle. 100Pd; deduced levels, J, π, g factors, B(E2) values.

NUCLEAR MOMENTS 100Pd; measured g-factors of first 2+, 4+ states by transient magnetic field technique in inverse kinematics. Comparison with large-scale shell-model calculations and collective-model predictions.

doi: 10.1103/PhysRevC.84.044327
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2011ZA06      Phys.Rev. C 84, 044325 (2011)

L.Zamick, S.J.Q.Robinson

Zeros of 6-j symbols: Atoms, nuclei, and bosons

doi: 10.1103/PhysRevC.84.044325
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2010GU20      Phys.Rev. C 82, 064301 (2010)

G.Gurdal, G.J.Kumbartzki, N.Benczer-Koller, Y.Y.Sharon, L.Zamick, S.J.Q.Robinson, T.Ahn, R.Casperson, A.Heinz, G.Ilie, J.Qian, V.Werner, E.Williams, R.Winkler, D.McCarthey

g factors of the low-lying states in 106Pd: Examination of the vibrational character of 106Pd

NUCLEAR MOMENTS 106Pd; measured g factors and half-lives of low lying 2+ and 4+ states using transient field (TF) technique in inverse kinematics in Coulomb excitation. Comparison with previous measurements and theoretical predictions.

NUCLEAR REACTIONS C(106Pd, C'), E=230, 280, 290, 300 MeV; measured scattered C ions, Eγ, Iγ, γ(θ, H), (12C)γ-coin, level half-lives by line-shape method. 106Pd; deduced g factors, B(E2) values.

doi: 10.1103/PhysRevC.82.064301
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2010ZA14      Phys.Rev. C 82, 067303 (2010)

L.Zamick, Y.Y.Sharon, S.J.Q.Robinson

Ratio of isoscalar to isovector core polarization for magnetic moments

NUCLEAR MOMENTS 2H, 6Li, 10B, 14N, 18F, 22Na, 26Al, 38K, 46V, 58Cu; calculated isoscalar g factors using large scale and single-j shell-model calculations.

doi: 10.1103/PhysRevC.82.067303
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2009MU06      Phys.Rev. C 79, 054310 (2009)

D.Mucher, G.Gurdal, K.-H.Speidel, G.J.Kumbartzki, N.Benczer-Koller, S.J.Q.Robinson, Y.Y.Sharon, L.Zamick, A.F.Lisetskiy, R.J.Casperson, A.Heinz, B.Krieger, J.Leske, P.Maier-Komor, V.Werner, E.Williams, R.Winkler

Nuclear structure studies of 70Zn from g-factor and lifetime measurements

NUCLEAR REACTIONS 12C(70Zn, X), E=180-200 MeV; measured Eγ, Iγ, γγ-coin, (particle)γ-coin, γγ(θ), half-lives and spin precessions in a magnetic field. 70Zn; deduced levels, J, π. Comparison with large-scale shell-model calculations.

NUCLEAR MOMENTS 70Zn; measured g factors by projectile Coulomb excitation in inverse kinematics combined with transient magnetic field. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.79.054310
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2009RO08      Phys.Rev. C 79, 054322 (2009)

S.J.Q.Robinson, Y.Y.Sharon, L.Zamick

Nuclear structure of the even-even argon isotopes with a focus on magnetic moments

NUCLEAR STRUCTURE 38,40,42,44,46Ar; calculated levels, J, π, g factors, B(E2), configurations using WBT and SDPF-U interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.054322
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2009YE04      Europhys.Lett. 88, 52001 (2009)

S.Yeager, S.J.Q.Robinson, L.Zamick, Y.Y.Sharon

Isoscalar g-factors of odd-odd N = Z nuclei

NUCLEAR STRUCTURE 2H, 6Li, 10B, 14N, 18F, 23Na, 26Al, 38K, 46V, 58Cu; calculated g factors with large-scale shell model.

COMPILATION 2H, 6Li, 10B, 14N, 18F, 23Na, 26Al, 38K, 46V, 58Cu; compiled experimental nuclear structure data.

doi: 10.1209/0295-5075/88/52001
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2008SP01      Phys.Lett. B 659, 101 (2008)

K.-H.Speidel, S.Schielke, J.Leske, N.Pietralla, T.Ahn, A.Costin, M.v.Schmid, O.Zell, J.Gerber, P.Maier-Komor, S.J.Q.Robinson, A.Escuderos, Y.Y.Sharon, L.Zamick

First g-factor measurements on semi-magic 36S and their implications for the rigidity of the N = 20 shell closure

NUCLEAR REACTIONS 12C(36S, 36S'), (36S, 40Ar), E=70 MeV; measured Eγ, Iγ, T1/2 using transient field technique and DSA; 36S, 40Ar; deduced B(E2), g-factor. Comparison with shell model and previous results.

doi: 10.1016/j.physletb.2007.11.049
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2008SP04      Phys.Rev. C 78, 017304 (2008)

K.-H.Speidel, S.Schielke, J.Leske, N.Pietralla, T.Ahn, A.Costin, O.Zell, J.Gerber, P.Maier-Komor, S.J.Q.Robinson, A.Escuderos, Y.Y.Sharon, L.Zamick

New shell model calculations for 40Ar based on recent g-factor and lifetime measurements

NUCLEAR REACTIONS 12C(36S, 40Ar), E=70 MeV; measured Eγ, Iγ, particle spectra, γγ-coin, (particle)γ-coin, g-factors, B(E2). 40Ar; measured half-lives of 2+ and 4+ states using Doppler-shift attenuation method; deduced levels, J, π.

doi: 10.1103/PhysRevC.78.017304
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2007BE42      Phys.Atomic Nuclei 70, 1330 (2007)

N.Benczer-Koller, G.J.Kumbartzki, P.Boutachkov, A.Escuderos, Y.Y.Sharon, L.Zamick, E.A.Stefanova, S.J.Q.Robinson, V.Werner

Magnetic moments: Study of the interplay between single-particle and collective excitations

NUCLEAR STRUCTURE 38,40S, 36,38,40Ar, 70Ge, 92,94Zr; analyzed coulomb excitation data for g-factor measurements for mixed symmetry states. Compared results to model calculations.

doi: 10.1134/S1063778807080029
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2007BO04      Phys.Rev. C 75, 021302 (2007)

P.Boutachkov, N.Benczer-Koller, G.J.Kumbartzki, A.Escuderos, Y.Y.Sharon, L.Zamick, S.J.Q.Robinson, H.Ai, M.Chamberlain, G.Gurdal, A.Heinz, E.A.McCutchan, J.Quian, V.Werner, E.Williams, K.Aleksandrova, C.A.Copos, D.A.Kovacheva, P.Manchev

Sign of the g factor of the 4+1 state in 68Zn

NUCLEAR REACTIONS 12C(68Zn, 68Zn'), E=180, 200 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. 68Zn deduced levels, J, π, g. Transient field technique. Comparison with model predictions.

doi: 10.1103/PhysRevC.75.021302
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2007BO41      Phys.Rev. C 76, 054311 (2007)

P.Boutachkov, S.J.Q.Robinson, A.Escuderos, G.Kumbartzki, N.Benczer-Koller, E.Stefanova, Y.Y.Sharon, L.Zamick, E.A.McCutchan, V.Werner, H.Ai, A.B.Garnsworthy, G.Gurdal, A.Heinz, J.Qian, N.J.Thompson, E.Williams, R.Winkler

Measurement of the g factor of the 4+1 state in 70Ge

NUCLEAR REACTIONS C(70Ge, X)70Ge, E=190, 225 MeV; measured Eγ, Iγ; deduced levels, J, π, g-factors for 2+, 3+ and 4+ states, B(E2), half-lives. Comparison with calculated and measured g-factors of 64,66,68Zn, 74,76,78,80,82Se.

doi: 10.1103/PhysRevC.76.054311
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2006ES01      Phys.Rev. C 73, 027301 (2006)

A.Escuderos, S.J.Q.Robinson, L.Zamick

Full major shell calculation for states that were degenerate in a single j-shell calculation

NUCLEAR STRUCTURE 43Sc, 44,45Ti, 46,47V; calculated levels, J, π, configurations, energy splitting. Full shell-model calculation.

doi: 10.1103/PhysRevC.73.027301
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2006LE31      Phys.Rev. C 74, 024315 (2006)

J.Leske, K.-H.Speidel, S.Schielke, J.Gerber, P.Maier-Komor, S.J.Q.Robinson, A.Escuderos, Y.Y.Sharon, L.Zamick

Low-level structure of 70Ge from lifetime and g-factor measurements following α transfer to a 66Zn ion beam

NUCLEAR REACTIONS 12C(66Zn, 2α), (66Zn, 66Zn'), E=180 MeV; measured Eγ, Iγ(θ, H, t), αγ-coin, DSA. 70Ge deduced levels, J, π, T1/2, B(E2), g factor. Comparison with previous results, model predictions.

doi: 10.1103/PhysRevC.74.024315
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2006RO13      Phys.Rev. C 73, 037306 (2006)

S.J.Q.Robinson, A.Escuderos, L.Zamick, P.von Neumann-Cosel, A.Richter, R.W.Fearick

Shell-model test of the rotational-model relation between static quadrupole moments Q(2+1), B(E2)'s, and orbital M1 transitions

NUCLEAR STRUCTURE 44,46,48Ti, 48,50Cr; calculated quadrupole moments, B(E2), B(M1). Comparison of shell model and collective model results.

doi: 10.1103/PhysRevC.73.037306
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2006SP01      Phys.Lett. B 632, 207 (2006)

K.-H.Speidel, S.Schielke, J.Leske, J.Gerber, P.Maier-Komor, S.J.Q.Robinson, Y.Y.Sharon, L.Zamick

Experimental g factors and B(E2) values in Ar isotopes: Crossing the N = 20 semi-magic divide

NUCLEAR REACTIONS 12C(32S, 8Be), (34S, 8Be), (32S, 32S'), E=65-67 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin, DSA. 36,38Ar, 32S levels deduced g factors, T1/2, B(E2). Transient field technique.

doi: 10.1016/j.physletb.2005.10.052
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2006SP02      Phys.Lett. B 633, 219 (2006)

K.-H.Speidel, J.Leske, S.Schielke, S.C.Bedi, O.Zell, P.Maier-Komor, S.J.Q.Robinson, Y.Y.Sharon, L.Zamick

Low-level structure of 52Ti based on g factor and lifetime measurements

NUCLEAR REACTIONS 12C(48Ca, 8Be), E=100 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin. 52Ti deduced level, J, π, g factor, B(E2), T1/2. Transient field technique, comparison with shell model calculations.

doi: 10.1016/j.physletb.2005.11.089
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2005ES11      Phys.Rev. C 72, 054301 (2005)

A.Escuderos, B.F.Bayman, L.Zamick, S.J.Q.Robinson

Degeneracies when only T = 1 two-body interactions are present

NUCLEAR STRUCTURE 43Sc, 44,45Ti, 46,47V; calculated levels, J, π, configurations; deduced explanation for degeneracies.

doi: 10.1103/PhysRevC.72.054301
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2005LE19      Phys.Rev. C 71, 044316 (2005)

J.Leske, K.-H.Speidel, S.Schielke, O.Kenn, J.Gerber, P.Maier-Komor, S.J.Q.Robinson, A.Escuderos, Y.Y.Sharon, L.Zamick

Nuclear structure of the first 2+ state in radioactive 68Ge based on g factor and lifetime measurements

NUCLEAR REACTIONS 12C(64Zn, 2α), E=180 MeV; measured Eγ, Iγ(θ, H, t), αα-, αγ-coin. 68Ge deduced level energies, B(E2), g factor. Transient field technique.

doi: 10.1103/PhysRevC.71.044316
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2005RO33      Phys.Rev. C 72, 034314 (2005)

S.J.Q.Robinson, A.Escuderos, L.Zamick

Unfolding the effects of the T=0 and T=1 parts of the two-body interaction on nuclear collectivity in the f-p shell

NUCLEAR STRUCTURE 44,46,48Ti, 48,50Cr, 46V; calculated levels, J, π, B(E2); deduced role of T=0 two-body matrix elements. Comparisons with data.

doi: 10.1103/PhysRevC.72.034314
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2005ST22      Phys.Rev. C 72, 014309 (2005)

E.A.Stefanova, N.Benczer-Koller, G.J.Kumbartzki, Y.Y.Sharon, L.Zamick, S.J.Q.Robinson, L.Bernstein, J.R.Cooper, D.Judson, M.J.Taylor, M.A.McMahan, L.Phair

Near spherical shell-model structure of the 2+1 state in 40Ar from g-factor measurements

NUCLEAR REACTIONS C(40Ar, 40Ar'), E=80 MeV; C(46Ti, 46Ti'), E=100 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. 40Ar level deduced g factor, configuration. Transient field technique, comparison with shell model calculations.

doi: 10.1103/PhysRevC.72.014309
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2005TA02      Phys.Lett. B 605, 265 (2005)

M.J.Taylor, N.Benczer-Koller, L.Bernstein, J.Cooper, K.Hiles, D.S.Judson, G.Kumbartzki, P.Maier-Komor, M.A.McMahan, T.J.Mertzimekis, L.Phair, S.J.Q.Robinson, Y.Y.Sharon, K.-H.Speidel, A.E.Stuchbery, L.Zamick

Shell model configurations in the 2+1 state in 46Ca from a g-factor measurement

NUCLEAR REACTIONS C(46Ca, 46Ca'), E=95 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. 46Ca level deduced g-factor, configuration. Transient field technique, comparisons with neighboring isotopes.

doi: 10.1016/j.physletb.2004.11.021
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2004RO40      Phys.Rev. C 70, 057301 (2004)

S.J.Q.Robinson, L.Zamick

Isospin constraints on angular momentum truncated wave functions

NUCLEAR STRUCTURE 44,46,48Ti; calculated wave functions, B(M1), isospin constraints.

doi: 10.1103/PhysRevC.70.057301
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2003BO25      Nucl.Phys. A726, 175 (2003)

V.Bondarenko, A.V.Afanasjev, F.Becvar, J.Honzatko, M.-E.Montero-Cabrera, I.Kuvaga, S.J.Robinson, A.M.J.Spits, S.A.Telezhnikov

Nuclear structure of 157Gd

NUCLEAR REACTIONS 156Gd(n, γ), E=thermal, resonance; 157Gd(n, n'), E=fast; measured Eγ, Iγ. 157Gd deduced levels, J, π, configurations, rotational bands.

doi: 10.1016/j.nuclphysa.2003.07.005
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2003TA05      Phys.Lett. B 559, 187 (2003)

M.J.Taylor, N.Benczer-Koller, G.Kumbartzki, T.J.Mertzimekis, S.J.Q.Robinson, Y.Y.Sharon, L.Zamick, A.E.Stuchbery, C.Hutter, C.W.Beausang, J.J.Ressler, M.A.Caprio

Competing core and single particle excitations in the 2+1 state in 44Ca

NUCLEAR REACTIONS C, Cu, Gd(44Ca, 44Ca'), E=85, 90, 95 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. 44Ca level deduced g factor, configuration. Transient field technique.

doi: 10.1016/S0370-2693(03)00346-0
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2002RO33      Phys.Rev. C66, 034303 (2002)

S.J.Q.Robinson, L.Zamick

Effects of T = 0 Two Body Matrix Elements on M1 and Gamow-Teller Transitions: Isospin decomposition

NUCLEAR STRUCTURE 44,46,48Ti; calculated level energies, J, transitions B(M1), B(GT); deduced role of T=0 two-body matrix elements.

doi: 10.1103/PhysRevC.66.034303
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2002ZA05      Yad.Fiz. 65, 773 (2002); Phys.Atomic Nuclei 65, 740 (2002)

L.Zamick, Sh.J.Q.Robinson

The Love-Hate Relationship between the Shell Model and Cluster Model

doi: 10.1134/1.1471284
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2001RO10      Phys.Rev. C63, 054311 (2001)

S.J.Q.Robinson, L.Zamick

Effect of Deformation on the Twist and Other Dipole Modes

NUCLEAR STRUCTURE 12C; calculated strengths, energies for twist and dipole operators vs deformation.

doi: 10.1103/PhysRevC.63.054311
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2001RO11      Phys.Rev. C63, 057301 (2001)

S.J.Q.Robinson, L.Zamick

Structure of the Nearly Degenerate 61+ and 62+ States in 48Ti

NUCLEAR STRUCTURE 48Ti; calculated level energies, moment, transitions B(E2). Comparison of single-shell, configuration mixing approaches.

doi: 10.1103/PhysRevC.63.057301
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2001RO13      Phys.Rev. C63, 064316 (2001)

S.J.Q.Robinson, L.Zamick

Degeneracies When T = 0 Two Body Matrix Elements are Set Equal to Zero and Regge's 6j Symmetry Relations

NUCLEAR STRUCTURE 43,44Ti; calculated levels, J, π; deduced role of T=0 interactions. Shell model.

doi: 10.1103/PhysRevC.63.064316
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2001RO19      Nucl.Phys. A690, 314c (2001)

S.J.Q.Robinson, L.Zamick

The Effect of Deformation on the Twist Mode

NUCLEAR STRUCTURE 12C; calculated twist mode excitation energies, strengths vs deformation.

doi: 10.1016/S0375-9474(01)00966-6
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2001RO30      Phys.Rev. C64, 057302 (2001)

S.J.Q.Robinson, L.Zamick

Degeneracies When T = 0 Two Body Interaction Matrix Elements are Set Equal to Zero: Talmi's method of calculating coefficients of fractional parentage to states forbidden by the Pauli principle

NUCLEAR STRUCTURE 43Sc, 43,44Ti; analyzed level energies, degeneracies.

doi: 10.1103/PhysRevC.64.057302
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2000RO13      J.Res.Natl.Inst.Stand.Technol. 105, 107 (2000)

S.J.Robinson

GRID and Multiphonon States

doi: 10.6028/jres.105.014
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2000RO20      Phys.Rev. C62, 017302 (2000)

S.J.Q.Robinson, L.Zamick, A.Mekjian, N.Auerbach

Effects of Deformation on Weak Charge Transfer Transition Strengths

NUCLEAR STRUCTURE 12C; calculated isovector dipole, spin dipole, orbital dipole excitations summed strengths; deduced no deformation dependence.

doi: 10.1103/PhysRevC.62.017302
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2000RO29      Phys.Rev. C62, 044306 (2000)

S.J.Robinson, B.Faircloth, P.Miocinovic, A.S.Altgilbers

Lifetime of the 61+ State in 144Nd

RADIOACTIVITY 144Pm(EC); measured Eγ, Iγ(t), γγ-coin. 144Nd deduced level T1/2, B(E2), configuration. Comparison with model predictions.

doi: 10.1103/PhysRevC.62.044306
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1999RO18      Phys.Lett. 465B, 61 (1999)

S.J.Robinson, M.M.Hindi, H.G.Borner, Y.D.Chan, D.E.DiGregorio, C.Doll, M.R.Dragowsky, M.K.Harder, M.C.P.Isaac, K.S.Krane, R.-M.Larimer, A.O.Macchiavelli, R.W.Macleod, P.Miocinovic, E.B.Norman, A.Shadkam, K.Zaerpoor

Quadrupole-Octupole Coupled States in 144Nd

NUCLEAR REACTIONS 143Nd(n, γ), E=reactor; measured Doppler-broadened Eγ, Iγ. 144Nd deduced levels T1/2, B(λ), configurations, quadrupole-octupole coupling. Gamma-ray-induced Doppler-broadening technique.

RADIOACTIVITY 144Pm(EC); measured Eγ, Iγ, γγ-coin. 144Nd deduced levels, J, π, B(λ), δ, quadrupole-octupole coupling. Gammasphere array.

doi: 10.1016/S0370-2693(99)01027-8
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1999ZA19      Nucl.Phys. (Supplement) A654, 916c (1999)

K.Zaerpoor, Y.D.Chan, D.E.DiGregorio, M.R.Dragowsky, M.M.Hindi, M.C.P.Isaac, K.S.Krane, R.-M.Larimer, A.O.Macchiavelli, R.W.Macleod, P.Miocinovic, E.B.Norman, S.J.Robinson

Cosmic-Ray History Derived from the 54Mn, 56Ni and 144Pm Chronometers

RADIOACTIVITY 54Mn(β+); measured β+ decay branching ratio, partial T1/2; deduced log ft. 56Ni, 144Pm(β+); measured β+ decay branching ratio upper limits, partial T1/2 lower limits. Gammasphere array, implications for cosmic-ray physics discussed.

doi: 10.1016/S0375-9474(00)88572-3
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1998ZA03      Phys.Rev. C57, 2046 (1998)

K.Zaerpoor, Y.D.Chan, D.E.DiGregorio, M.R.Dragowsky, M.M.Hindi, M.C.P.Isaac, K.S.Krane, R.M.Larimer, A.O.Macchiavelli, R.W.Macleod, P.Miocinovic, E.B.Norman, S.J.Robinson

Cosmic-Ray Half-Life of 144Pm

RADIOACTIVITY 144Pm(β+), (EC) [from α activation of Pr]; measured decay, annihilation Eγ, Iγ, γγ-coin; deduced β+ branch upper limit.

doi: 10.1103/PhysRevC.57.2046
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1996PE05      Nucl.Phys. A599, 505 (1996)

P.Petkov, W.Andrejtscheff, H.G.Borner, S.J.Robinson, N.Klay, S.Yamada

Level Scheme and Electromagnetic Transition Strengths in 177Lu

NUCLEAR REACTIONS 176Lu(n, γ), E=thermal; measured Eγ, Iγ, I(ce), γγ(t). 177Lu deduced levels, γ-branching, γ-multipolarity, T1/2, B(λ), quadrupole moments. Enriched target, electron-, bent crystal γ-spectrometers, Ge, BaF2 detectors. Rotor-plus-quasiparticle calculations, systematics of K-forbidden E2 transitions.

doi: 10.1016/0375-9474(96)00007-3
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1996RO13      Phys.Rev. C54, 1478 (1996)

S.J.Robinson, A.S.Altgilbers, M.M.Hindi, E.B.Norman, R.-M.Larimer

Weak γ-Transition Intensities in the Electron Capture Decay of 144Pm

RADIOACTIVITY 144Pm(EC) [from Pr(α, X), E=20 MeV]; measured Eγ, Iγ. 144Nd levels deduced B(λ), Iγ.

doi: 10.1103/PhysRevC.54.1478
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1995HI19      Phys.Rev. C52, 2780 (1995)

M.M.Hindi, R.L.Kozub, S.J.Robinson

Absolute Intensity of Internal Bremsstrahlung from the Electron Capture Decay of 125I

RADIOACTIVITY 125I(EC); measured absolute I(IB), internal bremsstrahlung spectrum.

doi: 10.1103/PhysRevC.52.2780
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1994HI04      Phys.Rev. C49, 3289 (1994)

M.M.Hindi, R.L.Kozub, S.J.Robinson

Search for a 17 keV Neutrino in the Internal Bremsstrahlung Specrum of 125I

RADIOACTIVITY 125I(EC); measured internal bremsstrahlung Eγ; deduced Q, neutrino mass. 125I, 125Te deduced mass difference.

doi: 10.1103/PhysRevC.49.3289
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1994JO13      Int.J.Mod.Phys. E3, 757 (1994)

P.K.Joshi, E.F.Zganjar, D.Rupnik, S.J.Robinson, P.F.Mantica, H.K.Carter, J.Kormicki, R.L.Gill, W.B.Walters, C.R.Bingham, A.V.Ramayya, W.C.Ma, J.H.Hamilton

Lifetimes of the 0+2 Configuration in 186Hg and 188Hg

RADIOACTIVITY 188,186Tl(β+), (EC) [from 181Ta(16O, X), E=181 MeV]; measured βγγ-coin. 186,188Hg levels deduced T1/2, (ρ)2(E0).

doi: 10.1142/S021830139400019X
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1994RO13      Phys.Rev.Lett. 73, 412 (1994)

S.J.Robinson, J.Jolie, H.G.Borner, P.Schillebeeckx, S.Ulbig, K.P.Lieb

E2 and E3 Transitions from Quadrupole-Octupole Coupled States in 144Nd

NUCLEAR REACTIONS 143Nd(n, γ), E=reactor; measured γ line profiles, thermal Doppler broadening. 144Nd levels deduced T1/2, J, π, configuration.

doi: 10.1103/PhysRevLett.73.412
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1993HA04      Phys.Lett. 300B, 308 (1993)

P.Halse, S.J.Robinson

Shell Model-IBM Correspondence and the IBM Interpretation of 52Ti

NUCLEAR STRUCTURE 52Ti; calculated levels, B(λ), δ. Shell model, interacting boson model interpretation.

doi: 10.1016/0370-2693(93)91337-M
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1993JO15      Nucl.Instrum.Methods Phys.Res. A335, 461 (1993)

P.K.Joshi, P.F.Mantica, S.J.Robinson, R.L.Gill, E.F.Zganjar

Picosecond Lifetime Measurement Systems for Levels Populated by Electron Capture and for Levels Decaying by E0 Transitions

RADIOACTIVITY 60Co(β-); measured γγ(t). 24Na(β-); measured βγγ(t). 118Cs(β+), (EC); measured βγγ(t). 186Hg(β+), (EC); measured β(X-ray)(ce)-coin; deduced accidental contribution to coin-spectra.

doi: 10.1016/0168-9002(93)91231-B
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1993KL03      Nucl.Phys. A561, 1 (1993)

J.Klora, H.G.Borner, T.von Egidy, R.Georgii, J.Jolie, S.Judge, V.A.Khitrov, B.Krusche, V.A.Libman, H.Lindner, L.L.Litvinsky, U.Mayerhofer, A.V.Murzin, S.J.Robinson, A.M.Sukhovoi, H.Trieb

Nuclear Structure of 156Gd Studied with (n, γ), (n, e-), (d, p), (d, t) Reactions and Lifetime Measurements

NUCLEAR REACTIONS 155Gd(n, γ), (n, e-), E=thermal; measured Eγ, Iγ, γγ-coin, DSA. 155Gd(d, p), (d, t), E=22 MeV; measured particle spectra. 156Gd deduced levels, J, π, band structure, T1/2. Interacting spdf-boson model comparison.

doi: 10.1016/0375-9474(93)90165-T
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1993MI04      Nucl.Phys. A552, 232 (1993)

S.Michaelsen, A.Harder, K.P.Lieb, G.Graw, R.Hertenberger, D.Hofer, P.Schiemenz, E.Zanotti, H.Lenske, A.Weigel, H.H.Wolter, S.J.Robinson, A.P.Williams

Complete Spectroscopy of 90Y via the 89Y(n, γ) and 89Y(d(pol), p) Reactions

NUCLEAR REACTIONS 89Y(n, γ), E=thermal; measured Eγ, Iγ. 89Y(polarized d, p), E=22 MeV; measured σ(θ), vector analyzing power A(y)(θ). 90Y deduced levels, J, π, neutron binding energy, level density. Comparison with shell model, RPA calculations.

doi: 10.1016/0375-9474(93)90465-A
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1993PE04      Nucl.Phys. A554, 189 (1993)

P.Petkov, W.Andrejtscheff, S.J.Robinson, U.Mayerhofer, T.von Egidy, S.Brant, V.Paar, V.Lopac

Electromagnetic Transition Strengths in the Transitional Doubly Odd Nucleus 198Au

NUCLEAR REACTIONS 197Au(n, γ), E=thermal; measured E, Iγ, γγ(t). 198Au levels deduced T1/2, B(λ). Natural target, Ge detector, generalized centroid-shift analysis, interacting boson-fermion-fermion calculations.

doi: 10.1016/0375-9474(93)90338-X
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1992CO21      Phys.Rev. C46, 1301 (1992)

J.Copnell, S.J.Robinson, J.Jolie, K.Heyde

Structure of the N = 84 Isotones 138Xe-146Sm

NUCLEAR STRUCTURE 138Xe, 140Ba, 142Ce, 143,144Nd, 148Sm; calculated levels, B(λ). Interacting boson model, particle-core model.

doi: 10.1103/PhysRevC.46.1301
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1992CO25      J.Phys.(London) G18, 1943 (1992)

J.Copnell, K.Kumar, S.J.Robinson, C.Tenreiro

An Application of the Dynamic Deformation Model to the N = 84 Isotones 138Xe-146Sm

NUCLEAR STRUCTURE 138Xe, 146Sm, 140Ba, 142Ce, 144Nd; calculated levels, B(λ), δ. Dynamic deformation model.

doi: 10.1088/0954-3899/18/12/010
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1992CO26      Z.Phys. A344, 35 (1992)

J.Copnell, S.J.Robinson, W.Lippert, V.Rabbel

Levels of 138Xe Populated in the β-Decay of 138I

RADIOACTIVITY 138I(β-) [from 235U(n, F), E=thermal]; measured Eγ, Iγ, βγ-coin, γγ-coin. 138Xe deduced levels, J, π.

doi: 10.1007/BF01291017
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1992RO22      Hyperfine Interactions 75, 533 (1992)

S.J.Robinson, J.Jolie, H.G.Borner, S.Ulbig, D.Janssen

Excited Level Lifetime Measurements Following Very Low Energy Nuclear Recoils

COMPILATION 156Gd, 36Cl, 144Nd, 24Mg; compiled, reviewed Doppler broadening data.

doi: 10.1007/BF02399009
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1991BO18      Phys.Rev.Lett. 66, 691 (1991)

H.G.Borner, J.Jolie, S.J.Robinson, B.Krusche, R.Piepenbring, R.F.Casten, A.Aprahamian, J.P.Draayer

Evidence for the Existence of Two-Phonon Collective Excitations in Deformed Nuclei

NUCLEAR REACTIONS Er(n, γ), E=thermal; measured γ Doppler shift. 168Er levels deduced T1/2, B(λ), collectivity features. GRID technique.

doi: 10.1103/PhysRevLett.66.691
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1991BO35      Nucl.Phys. A534, 255 (1991)

H.G.Borner, R.F.Casten, I.Forster, D.Lieberz, P.von Brentano, S.J.Robinson, T.von Egidy, G.Hlawatsch, H.Lindner, P.Geltenbort, F.Hoyler, H.Faust, G.Colvin, W.R.Kane, M.MacPhail

Level Structure of 191Os: Coexisting oblate and prolate configurations

NUCLEAR REACTIONS 190Os(n, γ), (n, e), E=thermal, resonance; measured Eγ, Iγ, γγ-coin, I(ce). 190Os(d, t), E=20 MeV; measured σ(Et). 191Os deduced levels, J, π, ICC, γ multipolarity.

doi: 10.1016/0375-9474(91)90498-U
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1991KL02      Phys.Rev. C44, 2801 (1991)

N.Klay, F.Kappeler, H.Beer, G.Schatz, H.Borner, F.Hoyler, S.J.Robinson, K.Schreckenbach, B.Krusche, U.Mayerhofer, G.Hlawatsch, H.Lindner, T.von Egidy, W.Andrejtscheff, P.Petkov

Nuclear Structure of 176Lu and Its Astrophysical Consequences. I. Level Scheme of 176Lu

NUCLEAR REACTIONS 175Lu(n, γ), (n, e-), E=thermal; measured Eγ, Iγ, I(ce), γγ-coin. 175Lu(d, p), Ed=20.118 MeV; measured proton spectra. 176Lu deduced levels, J, π, T1/2, isomer, neutron separation energy.

doi: 10.1103/PhysRevC.44.2801
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1991MA65      Z.Phys. A341, 1 (1991)

U.Mayerhofer, T.von Egidy, J.Jolie, H.G.Borner, G.Colvin, S.Judge, B.Krusche, S.J.Robinson, K.Schreckenbach, S.Brant, V.Paar

The Experimental Structure of 199Au and the Interacting Boson-Fermion Model

NUCLEAR STRUCTURE 199Au; analyzed Eγ, Iγ data; deduced γ-multipolarity, J, π. Interacting boson fermion-fermion model. Double neutron capture on 197Au, (2n, γ), (2n, e-) reactions studied.

doi: 10.1007/BF01281269
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1991MI08      Z.Phys. A338, 371 (1991)

S.Michaelsen, K.P.Lieb, S.J.Robinson

Complete Spectroscopy of 51,52V via the 50,51V(n, γ) Reactions

NUCLEAR REACTIONS 50,51V(n, γ), E=thermal; measurd Eγ, Iγ. 51,52V deduced levels, J, π, neutron binding energies.

doi: 10.1007/BF01295765
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1991PE12      Nucl.Phys. A533, 49 (1991)

P.Petkov, W.Andrejtscheff, J.Copnell, S.J.Robinson

E1 and M1 Transition Strengths from Two-Quasiparticle Structures in 168Er

NUCLEAR REACTIONS 167Er(n, γ), E=thermal; measured Eγ, Iγ, γγ(t). 168Er levels deduced T1/2, B(λ). Natural target, Ge detectors, generalized centroid-shift analysis, E1 systematics.

doi: 10.1016/0375-9474(91)90819-R
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1991UL01      Z.Phys. A338, 397 (1991)

S.Ulbig, K.P.Lieb, H.G.Borner, B.Krusche, S.J.Robinson, J.G.L.Booten

GRID Lifetime Measurements in 59,61,63Ni following Thermal Neutron Capture

NUCLEAR REACTIONS 58,60,62Ni(n, γ), E=thermal; measured γ-spectra Doppler shifts, line shapes. 59Ni levels deduced T1/2, B(λ). 61,63Ni levels deduced T1/2. GRID technique.

doi: 10.1007/BF01295767
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1991UL02      Phys.Lett. 259B, 29 (1991)

S.Ulbig, J.Jolie, S.J.Robinson, K.P.Lieb, H.G.Borner, P.Schillebeeckx

GRID Lifetime Study of the Reaction 35Cl(n, γ)36Cl and the Slowing-Down Process of 0.5 keV Cl Atoms in Chlorides

NUCLEAR REACTIONS 35Cl(n, γ), E=thermal; measured Doppler broadened γ lineshapes. 36Cl levels deduced T1/2. GRID technique, Cl atom slowing down in various chlorides.

doi: 10.1016/0370-2693(91)90128-D
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1990RO17      Nucl.Instrum.Methods Phys.Res. A292, 386 (1990)

S.J.Robinson

How Reliable are Spins and δ-Values Derived from Directional Correlation Experiments ( Question )

RADIOACTIVITY 146Nd, 124Te; analyzed directional correlation data; deduced δ, J assignment reliability.

doi: 10.1016/0168-9002(90)90395-M
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1989AH01      J.Phys.(London) G15, 93 (1989)

S.T.Ahmad, W.D.Hamilton, P.Van Isacker, S.A.Hamada, S.J.Robinson

Mixed-Symmetry States and the Structure of 200Hg

NUCLEAR REACTIONS 199Hg(n, γ), E=thermal; measured E(γ), I(γ), γγ-coin, γγ(θ). 200Hg deduced levels, J, π, δ(E2/M1), X(E0/E2), mixed-symmetry. Enriched target, Ge(Li) detectors.

doi: 10.1088/0954-3899/15/1/010
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1988CO18      J.Phys.(London) G14, 1411 (1988)

G.G.Colvin, S.J.Robinson, F.Hoyler

100Ru Studied by Thermal Neutron Capture

NUCLEAR REACTIONS 99Ru(n, e-), (n, γ), E=thermal; measured I(ce), E(γ), I(γ). 100Ru deduced levels, J, π, ICC, B(λ), ratios, neutron separation energy. Model calculations.

NUCLEAR STRUCTURE 100Ru; calculated levels, B(λ) ratios. Interacting boson model.

doi: 10.1088/0305-4616/14/11/012
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1988LI30      Phys.Lett. 215B, 50 (1988)

K.P.Lieb, H.G.Borner, M.S.Dewey, J.Jolie, S.J.Robinson, S.Ulbig, Ch.Winter

Doppler Shift Attenuation Lifetime Measurements in 54Cr following Thermal Neutron Capture

NUCLEAR REACTIONS 53Cr(n, γ), E=thermal; measured Doppler broadened γ-line shapes. 54Cr levels deduced T1/2, B(M1).

NUCLEAR STRUCTURE 52Ti, 54Cr, 56Fe; calculated 2+ states, B(M1).

doi: 10.1016/0370-2693(88)91068-4
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1987CO03      J.Phys.(London) G13, 191 (1987)

G.G.Colvin, F.Hoyler, S.J.Robinson

E0 Transitions in 106Pd Studied by Neutron Capture

NUCLEAR STRUCTURE 106Pd; calculated B(M1), B(E2). Interacting boson approximation model.

NUCLEAR REACTIONS 105Pd(n, e), (n, γ), E=thermal; measured I(ce), Eγ, Iγ. 106Pd deduced levels, E0 transition strengths, dimensionless ratios. Enriched target. Interacting boson approximation model.

doi: 10.1088/0305-4616/13/2/008
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1987SU05      J.Phys.(London) G13, 807 (1987)

A.R.H.Subber, S.J.Robinson, P.Hungerford, W.D.Hamilton, P.Van Isacker, K.Kumar, P.Park, K.Schreckenbach, G.Colvin

The Level Structure of 76Se and 78Se and the Systematics of Selenium Isotopes within the Framework of the DDM

RADIOACTIVITY 76As(β-) [from 75As(n, γ), E=thermal]; measured γ(θ), oriented nuclei. 76Se deduced levels, J, π, δ, β-transition L mixing.

NUCLEAR REACTIONS 77Se(n, γ), (n, e-), E=thermal; measured Eγ, Iγ, γγ(θ), oriented nuclei, I(ce). 78Se deduced levels, J, π, δ, ICC, B(E0/E2) ratio. Enriched target, β-spectrometer.

doi: 10.1088/0305-4616/13/6/011
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1986MA06      Phys.Lett. 167B, 277 (1986)

W.C.Ma, A.V.Ramayya, J.H.Hamilton, S.J.Robinson, J.D.Cole, E.F.Zganjar, E.H.Spejewski, R.Bengtsson, W.Nazarewicz, J.-Y.Zhang

The Structure of High Spin States in 184Hg and 186Hg

NUCLEAR STRUCTURE 186Hg; analyzed data; deduced band structure interpretation.

NUCLEAR REACTIONS 156Gd(32S, 4n), E=155, 160, 165 MeV; measured σ(Eγ, E), γγ-coin, DSA, γ(θ), oriented nuclei. 184Hg deduced levels, J, π, T1/2, B(E2), β2. Cranked shell model comparision.

doi: 10.1016/0370-2693(86)90345-X
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1986RO16      J.Phys.(London) G12, 903 (1986)

S.J.Robinson, W.D.Hamilton, P.Hungerford, B.Pfeiffer, G.Jung, D.M.Snelling

Levels and Transitions in 140Ba Populated following the β Decay of 140Cs

NUCLEAR STRUCTURE 140,142,144,146Ba; calculated levels, B(E2). Interacting boson model.

RADIOACTIVITY 140Cs(β-) [from 235U(n, F), mass separation]; measured Eγ, Iγ, γγ(θ), oriented nuclei; deduced log ft, Iβ. 140Ba deduced levels, J, π, δ, γ-branching. Interacting boson model.

doi: 10.1088/0305-4616/12/9/013
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1985WE10      J.Phys.(London) G11, L173 (1985)

S.Wen, A.V.Ramayya, S.J.Robinson, C.F.Maguire, W.C.Ma, X.Zhao, T.M.Cormier, P.M.Stwertka, J.D.Cole, E.F.Zganjar, R.B.Piercey, M.A.Herath-Banda, J.Eberth, M.Wiosna

First Cascades in 73Br and High-Spin States in 75Br

NUCLEAR REACTIONS 54Fe(28Si, xnyp), E=128 MeV; measured Eγ, Iγ, γ(fragment)-coin. 73,75Br deduced levels, J, π, γ-branching, band structure.

doi: 10.1088/0305-4616/11/9/007
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1984MA27      Phys.Lett. 139B, 276 (1984)

W.C.Ma, A.V.Ramayya, J.H.Hamilton, S.J.Robinson, M.E.Barclay, K.Zhao, J.D.Cole, E.F.Zganjar, E.H.Spejewski

Ground State Shape and Crossing of near Spherical and Deformed Bands in 182Hg

NUCLEAR REACTIONS 156,154Gd(32S, 4n), E=155, 160, 165 MeV; measured Eγ, Iγ, γγ-, γ(X-ray)-coin. 182Hg deduced levels, J, π, γ-branching, ground state shape, band structure.

doi: 10.1016/0370-2693(84)91079-7
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1983HA01      J.Phys.(London) G9, L13 (1983)

W.D.Hamilton, S.J.Robinson, D.M.Snelling

Are Primary γ-Ray Intensities in ARC Measurements a Reliable Basis for Level Identification and Spin-Parity Assignment ( Question )

NUCLEAR REACTIONS 143,145Nd(n, γ), E=thermal; analyzed γγ(θ), oriented nuclei; deduced average resonance capture analysis inadecquacy. 146,144Nd deduced levels, J, π.

doi: 10.1088/0305-4616/9/1/003
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1983RO03      J.Phys.(London) G9, L71 (1983)

S.J.Robinson, W.D.Hamilton, D.M.Snelling

A New Example of O(6) Nuclear Symmetry - 124 52Te72

NUCLEAR STRUCTURE 124Te; calculated levels, B(E2) ratios; deduced O(6) symmetry. Boson multipole expansion method.

doi: 10.1088/0305-4616/9/3/003
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1983RO13      J.Phys.(London) G9, 961 (1983)

S.J.Robinson, W.D.Hamilton, D.M.Snelling

Levels and Transitions in 124Te following Thermal-Neutron Capture by 123Te and the β Decay of Oriented 124Sb

NUCLEAR REACTIONS 123Te(n, γ), E=thermal; measured Eγ, Iγ, γγ(θ), oriented nuclei. 124Te levels deduced J, π, δ. Phonon, interacting boson model interpretations.

RADIOACTIVITY 124Sb(β-); measured Eγ, Iγ, γ(θ), oriented nuclei; deduced β-transition multipole components. 124Te levels deduced J, π, δ. Phonon, interacting boson model interpretations.

doi: 10.1088/0305-4616/9/8/018
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