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NSR database version of May 24, 2024.

Search: Author = S.M.Perez

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2019IB01      Phys.Rev. C 99, 064332 (2019)

T.T.Ibrahim, A.C.Merchant, S.M.Perez, B.Buck

α-cluster structure above double closed shells

NUCLEAR STRUCTURE 20Ne, 44Ti, 94Mo, 104,136Te; calculated levels, J, π, B(E2), mean-square separation of the α-core system, α-decay widths using local potential cluster model with a cluster-core nuclear potential parametrized as mixture of Saxon-Woods and cubed Saxon-Woods terms. Comparison with experimental data.

doi: 10.1103/PhysRevC.99.064332
Citations: PlumX Metrics


2015DU02      J.Phys.(London) G42, 15103 (2015)

E.J.du Toit, S.M.Wyngaardt, S.M.Perez

Cluster decay of 234U and 232Th by the emission of neon isotopes

RADIOACTIVITY 234U, 232Th(24Ne), (26Ne); calculated decay parameters using a binary cluster formalism.

doi: 10.1088/0954-3899/42/1/015103
Citations: PlumX Metrics


2013BU02      Phys.Rev. C 87, 024304 (2013), Erratum Phys.Rev. C 88, 039903 (2013)

B.Buck, A.C.Merchant, S.M.Perez

Local potential model of the Hoyle band in 12C

NUCLEAR STRUCTURE 12C; calculated level energies, widths, charge radii of Hoyle band using a local potential 8Be+α cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.024304
Citations: PlumX Metrics


2012BU08      Phys.Rev. C 85, 054302 (2012)

B.Buck, A.C.Merchant, S.M.Perez

Electromagnetic transition strengths in heavy nuclei

NUCLEAR STRUCTURE 230,232Th, 234,238U; calculated reduced B(E2), B(M1) for transitions within and between K=0+, 1+ and 2+ bands. Cluster Model for the structure of heavy nuclei. Discussion of beta and gamma bands. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.054302
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2012FR05      Phys.Rev. C 86, 034320 (2012)

M.Freer, M.Itoh, T.Kawabata, H.Fujita, H.Akimune, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, M.Fujiwara, U.Garg, N.Hashimoto, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, R.Neveling, S.Okumura, S.M.Perez, P.Papka, H.Sakaguchi, Y.Sasamoto, F.D.Smit, J.A.Swartz, H.Takeda, S.Terashima, M.Uchida, I.Usman, Y.Yasuda, M.Yosoi, J.Zenihiro

Consistent analysis of the 2+ excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering

NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; 12C(α, α'), E=386 MeV; measured 12C excitation spectra. 12C; deduced levels, 2+ excitation of the 0+ Hoyle state. R-matrix analysis. Discussed potential geometric arrangements of the cluster structures.

doi: 10.1103/PhysRevC.86.034320
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012IB02      Phys.Rev. C 85, 044313 (2012)

T.T.Ibrahim, S.M.Perez, S.M.Wyngaardt, B.Buck, A.C.Merchant

Hybrid potential analysis of exotic clustering in heavy nuclei

NUCLEAR STRUCTURE 222,224,226Ra, 228,230Th, 230,232,234,236U, 236,238Pu, 242Cm; calculated levels, J, π, B(E2), T1/2, exotic decay probability. Hybrid potential of a microscopic and a phenomenological core-cluster potential. Cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.044313
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2011BU09      Phys.Rev. C 84, 034310 (2011)

B.Buck, A.C.Merchant, S.M.Perez

Generation of excited K bands in heavy nuclei

NUCLEAR STRUCTURE 222Ra, 228Th, 232U, 236Pu; calculated radial wave functions for various L values and radial overlap integrals from a numerical solution of the Schrodinger equation. Binary cluster model. Schematics of K=0+, 1+, 2+ bands and transitions.

doi: 10.1103/PhysRevC.84.034310
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2010BU02      Phys.Rev. C 81, 034322 (2010)

B.Buck, A.C.Merchant, S.M.Perez

Theory of recursive nuclear band spectra

NUCLEAR STRUCTURE 102,104,106Mo, 102,104,106,110,112Ru, 102,110,114,116Pd, 140Xe, 144,146Ba, 146,148Ce, 148,150,152Nd, 150,152,154Sm, 152,154,156,158,160Gd, 154,156,158,160,162,164Dy, 156,158,160,162,164,166,168,170Er, 158,160,162,164,166,168,170,172,174,176Yb, 164,166,168,170,172,174,176,178,180Hf, 168,170,172,174,180,182,186W, 172,174,180,182,184,186,188,192Os, 176,180,184,186,188Pt, 222,224,226Ra, 222,226,228,230,232,234Th, 230,232,234,236,238U, 238,240,242,244Pu, 248Cm; analyzed nuclear band spectra using recursion formula based on a quantum mechanical model.

doi: 10.1103/PhysRevC.81.034322
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2010FR03      Nucl.Phys. A834, 621c (2010)

M.Freer, H.Fujita, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, R.Neveling, S.M.Perez, P.Papka, F.D.Smit, J.A.Swartz, I.Usman, P.J.Haigh, N.I.Ashwood, T.Bloxham, N.Curtis, P.McEwan, H.G.Bohlen, T.Dorsch, Tz.Kokalova, Ch.Schulz, C.Wheldon

Cluster Structure of 12C and 11Be

NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; measured Ep, Ip(θ=10null, 16null, 28null). 9Be(16O, 14O), E=234 MeV; measured E(particle), I(particle). 11Be; deduced levels, J, π. 11Be, 12C calculated levels, J, π, rotational and vibrational bands assuming 2α+3n for 11Be and 3α for 12C.

doi: 10.1016/j.nuclphysa.2010.01.107
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2010IB03      Phys.Rev. C 82, 034302 (2010)

T.T.Ibrahim, S.M.Perez, S.M.Wyngaardt

Hybrid potential model of the α-cluster structure of 212Po

NUCLEAR STRUCTURE 212Po; calculated levels, J, π, B(E2), half-lives, α-decay branching ratios from levels in ground-state band using Hybrid potential model for α+208Pb cluster structure. Comparison with experimental data.

NUCLEAR REACTIONS 208Pb(α, α), E=23.5, 40.0, 58.0 MeV; analyzed σ(θ) data.

doi: 10.1103/PhysRevC.82.034302
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2010PE15      Phys.Rev. C 82, 064305 (2010)

S.M.Perez, W.A.Richter, B.A.Brown, M.Horoi

Magnetic moments of T=3/2 mirror pairs

NUCLEAR MOMENTS 43V, 43Ca, 45Sc, 45Cr, 47Mn, 47Ti, 49Fe, 49V, 51Co, 51Cr, 53Ni, 53Mn; analyzed magnetic moments, γp and γn values of T=3/2 proton-rich nuclei in fp shell by using experimental values for their neutron-rich mirror nuclei. 19Na, 19O, 21F, 21Mg, 23Al, 23Ne, 25Na, 25Si, 27P, 27Mg, 29Al, 29S, 31Cl, 31Si, 33P, 33Ar, 35K, 35S, 37Cl, 37Ca; analyzed gp and γn values of T=3/2 mirror nuclei in sd shell. Shell model calculations.

doi: 10.1103/PhysRevC.82.064305
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2010WY02      J.Phys.:Conf.Ser. 205, 012013 (2010)

S.M.Wyngaardt, H.W.Groenewald, T.T.Ibrahim, J.Ndayishimye, S.M.Perez

Relativistic mean field formulation of clustering in heavy nuclei

NUCLEAR STRUCTURE 212Po; calculated levels, J, π, T1/2 using microscopic RMFT with BCM (binary cluster model) and also with M3Y and double folded RMFT. Compared with data.

doi: 10.1088/1742-6596/205/1/012013
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2009BU09      J.Phys.(London) G36, 085101 (2009)

B.Buck, A.C.Merchant, S.M.Perez, T.T.Ibrahim, S.M.Wyngaardt

Electromagnetic transition strength ratios in 238U

NUCLEAR STRUCTURE 238U; calculated B(E1), B(E2), B(E1)/B(E2). Pb-Ne cluster model, comparison with experiment.

doi: 10.1088/0954-3899/36/8/085101
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2009FR07      Phys.Rev. C 80, 041303 (2009)

M.Freer, H.Fujita, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, R.Neveling, S.M.Perez, P.Papka, F.D.Smit, J.A.Swartz, I.Usman

2+ excitation of the 12C Hoyle state

NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; 13C(p, p'), E=200 MeV; measured Ep and σ(θ). 12C; deduced levels, J, π, 2+ excitation of the Hoyle state in 12C. Coupled-channel (CCRC) analysis. Implications for the 8Be+4He reaction rate in stellar environments discussed.

doi: 10.1103/PhysRevC.80.041303
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1757. Data from this article have been entered in the XUNDL database. For more information, click here.


2008BU03      Phys.Rev. C 77, 017301 (2008)

B.Buck, A.C.Merchant, S.M.Perez

Core-cluster partitions of rare-earth nuclei

NUCLEAR STRUCTURE 142,144,146Ba, 146,148,150Ce, 146,148,150,152Nd, 148,150,152,154Sm, 152,154,156,158,160Gd, 154,156,158,160,162,164Dy, 156,158,160,162,164,166,168,170Er, 158,160,162,164,166,168,170,172,174,176Yb, 166,168,170,172,174,176,178,180Hf, 168,170,172,180,182,184,186W, 182,184,186,188,190,192Os, 184,186,188,190,192,194,196,198Pt; calculated cluster charge, cluster mass, potential radii, B(E2).

doi: 10.1103/PhysRevC.77.017301
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2008BU11      J.Phys.(London) G35, 085101 (2008)

B.Buck, A.C.Merchant, S.M.Perez

Negative parity bands in even-even isotopes of Ra, Th, U and Pu

NUCLEAR STRUCTURE 226Ra, 230Th, 234,236,238U, 238,240,242Pu; calculated level energies and B(E3) for negative parity bands using a Pb core plus exotic cluster model.

doi: 10.1088/0954-3899/35/8/085101
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2008PE13      Phys.Rev. C 77, 064311 (2008)

S.M.Perez, W.A.Richter, B.A.Brown, M.Horoi

Correlations between magnetic moments and β decays of mirror nuclei

NUCLEAR STRUCTURE 11B, 11,13C, 13,15N, 15,17O, 17,19F, 19,21Ne, 21,23Na, 23,25Mg, 25,27Al, 27,29Si, 29,31P, 31,33S, 33,35Cl, 35,37Ar, 37,39K, 39,41Ca, 41,43Sc, 43,45Ti, 45,47V, 47,49Cr, 49,51Mn, 51,53Fe, 53,55Co, 55,57Ni, 57Cu; calculated magnetic moments, β-decay half-lives, gyromagnetic ratios.

doi: 10.1103/PhysRevC.77.064311
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2007BU16      Phys.Rev. C 76, 014310 (2007)

B.Buck, A.C.Merchant, S.M.Perez, H.E.Seals

Core-cluster partitions of actinide nuclei

NUCLEAR STRUCTURE Rn, Ra, Th, U, Pu, Cm; calculated level energies and B(E2) using a cluster model.

doi: 10.1103/PhysRevC.76.014310
Citations: PlumX Metrics


2007BU20      J.Phys.(London) G34, 1985 (2007)

B.Buck, A.C.Merchant, S.M.Perez

Negative parity bands in 238U

NUCLEAR STRUCTURE 238U; calculated level energies, K, J, π in terms of a Pb-Ne cluster model.

doi: 10.1088/0954-3899/34/9/010
Citations: PlumX Metrics


2007BU27      Phys.Rev. C 76, 034326 (2007)

B.Buck, A.C.Merchant, S.M.Perez

Parameter-free characterization of nuclear band spectra

doi: 10.1103/PhysRevC.76.034326
Citations: PlumX Metrics


2005BU03      Phys.Rev. C 71, 014311 (2005)

B.Buck, A.C.Merchant, S.M.Perez

Evidence of nuclear clustering throughout a major shell

NUCLEAR STRUCTURE Z=56-80; analyzed data; deduced cluster model parameters. 166,168,170,172,174,176,178,180Hf; calculated rotational bands level energies, cluster features.

doi: 10.1103/PhysRevC.71.014311
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2005BU17      Phys.Rev.Lett. 94, 202501 (2005)

B.Buck, A.C.Merchant, S.M.Perez

Interpretation of Correlations between Nuclear Observables in Rare-Earth Nuclei

NUCLEAR STRUCTURE 170Er, 170Yb, 170Hf, 170W; A=140-200; analyzed levels, B(E2); deduced core-cluster decomposition parameters.

doi: 10.1103/PhysRevLett.94.202501
Citations: PlumX Metrics


2005BU38      J.Phys.(London) G31, 1499 (2005)

B.Buck, A.C.Merchant, S.M.Perez, H.E.Seals

The exotic structure of heavy nuclei

RADIOACTIVITY 222,224,226Ra(14C); 228Th(20O); 230Th, 232,234U(24Ne); 230U(22Ne); 234U(26Ne); 234U, 236,238Pu(28Mg); 238Pu(30Mg), (32Si); 242Cm(34Si); calculated decay widths. 212Po(α); calculated T1/2. Binary cluster model.

NUCLEAR STRUCTURE 212Po, 222Ra, 228Th, 232U, 236Pu, 242Cm; calculated level energies.

doi: 10.1088/0954-3899/31/12/010
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2004BU02      J.Phys.(London) G30, 65 (2004)

B.Buck, A.C.Merchant, S.M.Perez

Coexistence of very dissimilar cluster bands in 212Po

NUCLEAR STRUCTURE 212Po; calculated cluster configuration energies, rotational bands.

doi: 10.1088/0954-3899/30/2/006
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2003BU11      Phys.Rev. C 68, 024313 (2003)

B.Buck, A.C.Merchant, S.M.Perez

Theory of band comparison in even-even nuclei

NUCLEAR STRUCTURE 142,144,146Ba, 146,148Ce, 146,148,150,152Nd, 150,152,154Sm, 218,220,222,224,226Ra, 222,224,226,228,230,232,234Th, 230,232,234,236,238U, 236,238,240,242,244Pu; calculated rotational bands relative μ, B(E2). 148,150Gd, 152,154Dy, 190,192,194Hg, 194,196Pb; calculated superdeformed bands relative μ, B(E2). 212Pb, 212Po; calculated superdeformed bands features. Cluster model.

doi: 10.1103/PhysRevC.68.024313
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2003BU27      Acta Phys.Hung.N.S. 18, 303 (2003)

B.Buck, A.C.Merchant, S.M.Perez

Criteria for Comparison of Bands in Even-Even Nuclei

NUCLEAR STRUCTURE 142,144,146Ba, 146,148Ce, 146,148,150,152Nd, 150,152,154Sm, 218,222,224,226Ra, 222,226,228,230,232,234Th, 230,232,234,236,238U, 238,240,242,244Pu; analyzed rotational bands, fractional change in transition energies and reduced mass. Cluster model.

doi: 10.1556/APH.18.2003.2-4.31
Citations: PlumX Metrics


2002BU13      Yad.Fiz. 65, 701 (2002); Phys.Atomic Nuclei 65, 669 (2002)

B.Buck, A.C.Merchant, S.M.Perez

Transition Quadrupole Moments in Superdeformed Bands

NUCLEAR STRUCTURE 60,62Zn, 80,82Sr, 84,86Zr, 132Ce, 134Nd, 142Sm, 146,148,150Gd, 152,154Dy, 190,192,194Hg, 194,196Pb, 236,238U; calculated superdeformed bands transition quadrupole moments. Binary cluster approach, comparisons with data.

doi: 10.1134/1.1471271
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2002BU18      Phys.Rev. C65, 067306 (2002)

B.Buck, A.C.Merchant, S.M.Perez

Binary Cluster Model of Very Extended Shapes in the A ∼ 110 Region

NUCLEAR STRUCTURE 102,104,106,108,110Ru, 104,106,108,110,112Pd, 106,108,110,112,114Cd, 108,110,112,114,116Sn, 110,112,114,116,118Te; calculated binary cluster configuration energies.

doi: 10.1103/PhysRevC.65.067306
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2002BU34      Phys.Rev. C 66, 067303 (2002)

B.Buck, A.C.Merchant, V.A.McBride, S.M.Perez

New relation between B(E2) values and excitation energies

NUCLEAR STRUCTURE A=10-252; analyzed B(E2), correlation with excitation energy for even-even nuclides. Binary cluster model.

doi: 10.1103/PhysRevC.66.067303
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2001BU02      Phys.Rev. C63, 014312 (2001)

B.Buck, A.C.Merchant, S.M.Perez

Transition Quadrupole Moments in Superdeformed Bands

NUCLEAR STRUCTURE 60,62Zn, 80,82Sr, 84,86Zr, 132Ce, 134Nd, 142Sm, 146,148,150Gd, 152,154Dy, 190,192,194Hg, 194,196Pb, 236,238U; calculated superdeformed bands transition quadrupole moments; deduced cluster configuration features. Binary cluster model, comparisons with data.

doi: 10.1103/PhysRevC.63.014312
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2001BU08      Phys.Rev. C63, 037301 (2001)

B.Buck, A.C.Merchant, S.M.Perez

Magnetic Moments of Mirror Nuclei

NUCLEAR MOMENTS A=3-59; compiled, analyzed μ, gyromagnetic ratios for mirror nuclei. 45,47V, 47Cr, 49Mn, 51,53Fe, 53Co, 55Ni, 57,59Cu, 59Zn; deduced predictions for ground-state μ.

doi: 10.1103/PhysRevC.63.037301
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2000BU01      Phys.Rev. C61, 014310 (2000)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Model Interpretation of Normal and Superdeformed Bands in 60Zn

NUCLEAR STRUCTURE 60Zn; calculated levels, J, π, superdeformed bands B(E2), deformation. Local potential cluster model. Comparison with data.

doi: 10.1103/PhysRevC.61.014310
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2000BU02      Phys.Rev. C61, 024314 (2000)

B.Buck, A.C.Merchant, M.J.Horner, S.M.Perez

Choosing Cluster and Core in Cluster Models of Nuclei

NUCLEAR STRUCTURE 218,222,224,226,228Ra, 222,224,226,228,230,232,234Th, 230,232,234,236,238U; calculated transitions B(E2). Cluster models, method for determining cluster size discussed. Comparison with data.

doi: 10.1103/PhysRevC.61.024314
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2000BU16      Nucl.Phys. A673, 157 (2000)

B.Buck, A.C.Merchant, M.J.Horner, S.M.Perez

Normal and Superdeformed Cluster Bands in Heavy Nuclei

NUCLEAR STRUCTURE 194Hg, 236U, 240Pu; calculated rotational bands levels, J, π, superdeformed bands features. Cluster model, comparisons with data.

doi: 10.1016/S0375-9474(00)00130-5
Citations: PlumX Metrics


2000BU32      Few-Body Systems 29, 53 (2000)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Selection in Binary Nuclear Models

NUCLEAR STRUCTURE 222,224,226,228,230,232,234Th, 218,222,224,226,228Ra, 230,232,234,236,238U, 238,240,242Pu; calculated transitions B(E2), cluster-core configuration features. Comparisons with data.

doi: 10.1007/s006010070008
Citations: PlumX Metrics


1999BU03      Phys.Rev. C59, 750 (1999)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Structure and γ Transitions in Actinide Nuclei

NUCLEAR STRUCTURE 226Ra, 232Th, 234,236,238U; calculated E2, E3 transition matrix elements. Binary cluster model. Comparison with data.

doi: 10.1103/PhysRevC.59.750
Citations: PlumX Metrics


1999BU06      Nucl.Phys. A650, 37 (1999)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Model Investigation of 229Th

NUCLEAR STRUCTURE 229Th; calculated levels, J, π, μ, quadrupole moment, B(M1), B(E2), parity-doublet bands. Cluster model.

doi: 10.1016/S0375-9474(99)00096-2
Citations: PlumX Metrics


1999BU13      J.Phys.(London) G25, 901 (1999)

B.Buck, A.C.Merchant, S.M.Perez

Exotic Cluster Model of Band Structure in Actinides

NUCLEAR STRUCTURE 232Th, 223Ac; calculated levels, J, π. 226Ra, 232Th, 236U; calculated E2 matrix elements. Binary cluster model. Comparison with data.

doi: 10.1088/0954-3899/25/4/065
Citations: PlumX Metrics


1999BU14      Nucl.Phys. A652, 211 (1999)

B.Buck, A.C.Merchant, S.M.Perez

Possible Clustering in Isotopes of Ba

NUCLEAR STRUCTURE 140,146Ba; calculated levels, J, π, B(λ). Cluster-core model. Comparison with data.

doi: 10.1016/S0375-9474(99)00163-3
Citations: PlumX Metrics


1999BU27      Nucl.Phys. A657, 267 (1999)

B.Buck, A.C.Merchant, S.M.Perez

Exotic Clustering in Ce and Nd Isotopes

NUCLEAR STRUCTURE 146,148,150Ce, 148,150,152,154Nd; calculated levels, J, π, B(E2), quadrupole moments. Exotic cluster model.

doi: 10.1016/S0375-9474(99)00342-5
Citations: PlumX Metrics


1998BU06      Phys.Rev. C57, R2095 (1998)

B.Buck, A.C.Merchant, S.M.Perez

Alternative View of Collective Bands in Actinide Nuclei

NUCLEAR STRUCTURE 223Ra, 234U; calculated levels, J, π, rotational bands. Binary cluster model, other actinide nuclei discussed.

doi: 10.1103/PhysRevC.57.R2095
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1998BU08      Nucl.Phys. A634, 15 (1998); Erratum Nucl.Phys. A640, 506 (1998)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Model Investigation of the Structure of 223Ra

NUCLEAR STRUCTURE 223Ra; calculated levels, J, π, deformation, B(Eλ), B(Mλ). Pb+C+n cluster model. Comparison with data.

RADIOACTIVITY 223Ra(14C); calculated partial decay T1/2. Pb+C+n cluster model.

doi: 10.1016/S0375-9474(98)00131-6
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1998BU18      Phys.Rev. C58, 2049 (1998)

B.Buck, A.C.Merchant, S.M.Perez

Systematic Study of Exotic Clustering in Even-Even Actinide Nuclei

NUCLEAR STRUCTURE 220,222,224,226Ra, 226,228,230,232,234Th, 232,234,236,238U, 236,238,240,242,244Pu, 244Cm; calculated levels, J, π, transitions B(E2), B(E4). Binary cluster model.

doi: 10.1103/PhysRevC.58.2049
Citations: PlumX Metrics


1998BU23      Phys.Rev. C58, 2990 (1998)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Model Investgigation of 223Ac

NUCLEAR STRUCTURE 223Ac; calculated levels, J, π. Cluster model with odd proton. Comparison with data.

doi: 10.1103/PhysRevC.58.2990
Citations: PlumX Metrics


1998BU27      Nucl.Phys. A644, 306 (1998)

B.Buck, A.C.Merchant, S.M.Perez

Cluster Model Investigation of 233U

NUCLEAR STRUCTURE 233U; calculated ground-state μ, Q, bandhead excitation energies, levels J, π, transitions B(E2), B(M1). Pb-Ne-n cluster model.

doi: 10.1016/S0375-9474(98)00595-8
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1997BU05      Nucl.Phys. A614, 129 (1997)

B.Buck, A.C.Merchant, S.M.Perez

Mass-Symmetric Form for Cluster-Core Potentials

NUCLEAR STRUCTURE 44Ti, 24Mg; calculated levels, B(λ). 222Ra; 212Po; calculated levels. Cluster-core potentials, mass-symmetric forms.

doi: 10.1016/S0375-9474(96)00448-4
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1997BU07      Nucl.Phys. A617, 195 (1997)

B.Buck, A.C.Merchant, S.M.Perez

Exotic Clustering in 222,224,226Ra

RADIOACTIVITY 222,224,226Ra(14C); calculated T1/2. Mixed Saxon-Woods plus cubed Saxon-Woods cluster-core interaction.

NUCLEAR STRUCTURE 222,224,226Ra; calculated levels, B(λ), deformation characteristics, (14C)-decay T1/2. Mixed Saxon-Woods plus cubed Saxon-Woods cluster-core interaction.

doi: 10.1016/S0375-9474(97)00043-2
Citations: PlumX Metrics


1997BU20      Nucl.Phys. A625, 554 (1997)

B.Buck, A.C.Merchant, S.M.Perez

Exotic Clustering in 232,234,236,238U

NUCLEAR STRUCTURE 232,234,236,238U; calculated levels, B(λ). Pb-Ne binary cluster model.

RADIOACTIVITY 232,234U(24Ne); calculated T1/2. Pb-Ne binary cluster model.

doi: 10.1016/S0375-9474(97)00511-3
Citations: PlumX Metrics


1997BU28      Nuovo Cim. 110A, 935 (1997)

B.Buck, A.C.Merchant, S.M.Perez

Exotic Cluster Model of Octupole Deformed Radium Isotopes

NUCLEAR STRUCTURE 223Ra; calculated levels J, π, deformation, μ, Q. 222Ra; calculated levels J, π. 226Ra; calculated transitions B(Eλ). Binary cluster model.

RADIOACTIVITY 222,224,226Ra(14C); calculated T1/2.

doi: 10.1007/BF03035929
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1996BU05      Phys.Rev.Lett. 76, 380 (1996)

B.Buck, A.C.Merchant, S.M.Perez

Exotic Cluster States in Actinide Nuclei

RADIOACTIVITY 224,226,222Ra(14C); 228Th(20O); 232U(24Ne); 234U, 236Pu(28Mg); 230Th, 232U(24Ne); 238Pu(32Si); calculated exotic decay T1/2. Cluster-core potential.

NUCLEAR STRUCTURE 222Ra, 228Th, 232U, 236Pu; calculated exotic cluster spectra, B(λ). Cluster-core potential.

doi: 10.1103/PhysRevLett.76.380
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1996BU08      Phys.Rev. C53, 2841 (1996)

B.Buck, J.C.Johnston, A.C.Merchant, S.M.Perez

Cluster Model of α Decay and 212Po

NUCLEAR STRUCTURE 212Po; calculated levels, B(λ), α-decay T1/2. Cluster model.

NUCLEAR REACTIONS 208Pb(α, α), E=23.5, 40 MeV; calculated σ(θ). Cluster model wave functions.

doi: 10.1103/PhysRevC.53.2841
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1996BU35      Phys.Rev. C54, 2063 (1996)

B.Buck, A.C.Merchant, S.M.Perez

Alpha Decays of Neutron Deficient Isotopes in the Region N > 82 > Z

RADIOACTIVITY 159,156Hf, 157,160,161,158,159Ta, 158,163,164W, 160,162,161,163,164,166Re, 163,164,170,172Os, 166,167,168,174,170,171,172,173Ir, 169,171Pt, 173,177,178Au, 175,176,177,178,179Hg, 179Tl, 149Tb, 156,155Lu, 172,174,177Au(α); calculated α-decay T1/2. 156Ta(p); calculated p-emission T1/2. Cluster model, three-parameter local potential with cosh geometry.

doi: 10.1103/PhysRevC.54.2063
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1996NE05      Phys.Rev. C54, 1773 (1996); Erratum Phys.Rev. C55, 1605 (1997)

R.T.Newman, R.W.Fearick, S.M.Perez, D.G.Aschman, K.Bharuth-Ram, W.A.Richter, F.D.Smit, V.M.Tshivhase, T.S.Volkwyn

0f7/2 Proton Transfer on 55Mn

NUCLEAR REACTIONS 55Mn(d, 3He), (d, d), E=46 MeV; measured σ(θ); deduced opptical model parameters. 54Cr deduced levels, J, spectroscopic factors. 55Mn(α, t), E not given; analyzed data. 56Fe levels deduced spins, spectroscopic factors. Spectroscopic sum rules analysis.

doi: 10.1103/PhysRevC.54.1773
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1995BU03      Phys.Rev. C51, 559 (1995)

B.Buck, A.C.Merchant, S.M.Perez

Systematics of Alpha-Cluster States Above Double Shell Closures

NUCLEAR STRUCTURE 20Ne, 44Ti, 94Mo, 212Po; calculated levels, B(λ), Γγ, Γα, T1/2 in some cases. Alpha-particle cluster models.

doi: 10.1103/PhysRevC.51.559
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1995BU24      Nucl.Phys. A593, 80 (1995)

B.Buck, A.C.Merchant, S.M.Perez

Model-Dependence of Hindrance Factors for Alpha-Decay, and Consequences for the Description of the 45.1 s Isomeric State of 212Po

RADIOACTIVITY 212Po(α); calculated α-decay reduced hindrance factors; deduced model dependence, implication for 212Po isomeric state.

doi: 10.1016/0375-9474(95)00335-X
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1995BU25      Phys.Rev. C52, 1840 (1995)

B.Buck, J.C.Johnston, A.C.Merchant, S.M.Perez

Unified Treatment of Scattering and Cluster Structure in α + Closed Shell Nuclei: 20Ne and 44Ti

NUCLEAR STRUCTURE 20Ne; 44Ti; calculated levels, B(λ), α-emission widths. Universal α-core interaction.

NUCLEAR REACTIONS 16O(α, α), E=22-49.5 MeV; 40Ca(α, α), E=24.1-49.5 MeV; analyzed σ(θ); deduced model parameters. Universal α-core interaction.

doi: 10.1103/PhysRevC.52.1840
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1995BU35      Phys.Rev. D51, 1419 (1995)

B.Buck, S.M.Perez

Magnetic Moments and β Decays of Octet Baryons

NUCLEAR MOMENTS 1n, 1H; calculated μ. Simple variant of the constituent quark model. Other aspects of octet baryons included.

doi: 10.1103/PhysRevD.51.1419
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1995NE01      Phys.Rev. C51, 1414 (1995)

R.T.Newman, S.M.Perez

Symmetrical Sum-Rule Analysis of Spectroscopic Factors for One-Nucleon Transfer

NUCLEAR STRUCTURE 51V, 59Co; calculated f7/2 nucleon transfer spectroscopic factors. Symmetric sum rule analysis.

doi: 10.1103/PhysRevC.51.1414
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1994BU07      J.Phys.(London) G20, 351 (1994)

B.Buck, A.C.Merchant, S.M.Perez, P.Tripe

Calculation of Exotic Decay Half-Lives for All Observed Cases

RADIOACTIVITY 221Fr, 225Ac, 221,223,222,224,226Ra(14C); 228Th(20O); 233,234,235,237U, 231Pa, 230Th(24Ne); 234U, 238,236Pu(28Mg); 238Pu(32Si), (28Mg); 231Pa(23F); 233,235U(25Ne); 114Ba(12C); calculated T1/2, effective Q. Cluster model.

doi: 10.1088/0954-3899/20/2/013
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1994BU12      Phys.Rev. C49, 3357 (1994)

B.Buck, A.C.Merchant, S.M.Perez

Comment on ' α-Decay Properties of Neutron-Deficient Polonium and Radon Nuclei '

doi: 10.1103/PhysRevC.49.3357
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1994BU13      Phys.Rev.Lett. 72, 1326 (1994)

B.Buck, A.C.Merchant, S.M.Perez

Alpha-Cluster Structure in 212Po

NUCLEAR STRUCTURE 212Po; calculated α-, γ-decay widths, T1/2, α-branching ratios, ICC for ground state 'band' levels. α-cluster model.

doi: 10.1103/PhysRevLett.72.1326
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1993AL14      Phys.Lett. 314B, 173 (1993)

M.S.Allie, F.D.Brooks, D.G.Aschman, A.Buffler, W.A.Cilliers, R.W.Fearick, C.G.L.Henderson, M.J.Oliver, M.R.Nchodu, S.M.Perez, D.Steyn, W.R.McMurray, B.R.S.Simpson, F.D.Smit, H.G.Miller, K.Bharuth-Ram, I.J.van Heerden

Differential Cross Section for n-p Radiative Capture at E(n) = 63.4 MeV

NUCLEAR REACTIONS 1H(n, γ), E=63.4 MeV; measured Iγ(θ); deduced σ(θ) for 2H(γ, p), E ≈ 34 MeV. Legendre polymonial fits.

doi: 10.1016/0370-2693(93)90445-N
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1993BU05      Phys.Rev. C47, 1307 (1993)

B.Buck, A.C.Merchant, S.M.Perez, P.Tripe

Diffuse Well Analysis of Exotic Decay of Heavy Nuclei

RADIOACTIVITY 222,224,226Ra(14C); 232U, 230Th(24Ne); 234U, 236Pu(28Mg); 238Pu(32Si); analyzed exotic decay T1/2 data; deduced model parameters. Cluster model, diffuse well.

doi: 10.1103/PhysRevC.47.1307
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1993BU09      At.Data Nucl.Data Tables 54, 53 (1993)

B.Buck, A.C.Merchant, S.M.Perez

Half-Lives of Favored Alpha Decays from Nuclear Ground States

RADIOACTIVITY A=106-266; compiled α-decay T1/2 data. Cluster model comparison.

doi: 10.1006/adnd.1993.1009
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1992BU03      J.Phys.(London) G18, 143 (1992)

B.Buck, A.C.Merchant, S.M.Perez

Favoured Alpha Decays of Odd-Mass Nuclei

RADIOACTIVITY A=145-257; calculated α-decay T1/2; deduced preformed α-particle existence evidence. Simple cluster model.

doi: 10.1088/0954-3899/18/1/012
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1992BU04      Phys.Rev. C45, 1688 (1992)

B.Buck, A.C.Merchant, S.M.Perez

Ground State Proton Emission from Heavy Nuclei

RADIOACTIVITY 109I, 113Cs, 147Tm, 151,150Lu, 156Ta, 160Re(p); calculated p-decay T1/2. Realistic proton-nucleus potential.

doi: 10.1103/PhysRevC.45.1688
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1992BU06      Phys.Rev. C45, 2247 (1992)

B.Buck, A.C.Merchant, S.M.Perez

α Decay Calculations with a Realistic Potential

NUCLEAR STRUCTURE N=80-160; calculated α-decay T1/2; deduced α-particle preformation probability dependence on mass.

doi: 10.1103/PhysRevC.45.2247
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1992PE01      Phys.Rev. C45, 870 (1992)

S.M.Perez, R.M.Quick, N.J.Davidson, H.G.Miller, F.Solms

Reconstruction of the Spin Dependence of One-Nucleon-Transfer Spectroscopic Sums from Incomplete Information

NUCLEAR STRUCTURE 49Ti, 45Sc; calculated f7/2 proton pickup, stripping spectroscopic factors.

doi: 10.1103/PhysRevC.45.870
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1991BU01      J.Phys.(London) G17, L91 (1991)

B.Buck, A.C.Merchant, S.M.Perez

Unifying Model for Alpha Decay and Exotic Decay of Heavy Nuclei

RADIOACTIVITY 222,224,226Ra(14C); 230Th, 232U(24Ne); 234U, 234Pu(28Mg); 238Pu(32Si); analyzed decay data. Extension of α-decay model.

doi: 10.1088/0954-3899/17/6/001
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1991BU05      J.Phys.(London) G17, 1223 (1991)

B.Buck, A.C.Merchant, S.M.Perez

Ground State to Ground State Alpha Decays of Heavy Even-Even Nuclei

RADIOACTIVITY A=164-264; analyzed α-decay T1/2 data; deduced Geiger-Nuttal plot discontinuity features. Cluster model.

doi: 10.1088/0954-3899/17/8/012
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1990BU13      Nucl.Phys. A512, 483 (1990)

B.Buck, A.C.Merchant, S.M.Perez

Can We Obtain Nuclear Structure Information from Exotic Decays of Heavy Nuclei ( Question )

RADIOACTIVITY 221Fr, 221,222,223,224,226Ra, 225Ac(14C), (α); 230Th, 231Pa, 232,233U(24Ne), (α); calculated exotic, α-decay T1/2. Cluster model.

doi: 10.1016/0375-9474(90)90082-W
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1990BU30      Phys.Rev.Lett. 65, 2975 (1990)

B.Buck, A.C.Merchant, S.M.Perez

New Look at α Decay of Heavy Nuclei

RADIOACTIVITY 220,222,224,226,228,230,232Th, 214,216,218,206,204,202,200,198,196,194,192Po, 172,174,176,178,180,182,184,186,188,190Pt(α); analyzed T1/2 data. 200,202,204,206,208Rn, 206,208,210Ra; analyzed T1/2 differences. Z=76-100; analyzed α-decay data. Preformed α-particle model.

doi: 10.1103/PhysRevLett.65.2975
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1988PE05      Phys.Rev.Lett. 60, 1342 (1988)

S.M.Perez

Comment on ' Spectroscopic Strength of 1f7/2 Transitions Deduced from the Reaction 51V(e, e'p)50Ti '

NUCLEAR REACTIONS 51V(e, e'p), E not given; analyzed data. 50Ti deduced 1f7/2 transition strength characteristics. Spin-dependent sum rules.

doi: 10.1103/PhysRevLett.60.1342
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1987PE12      Phys.Rev. C36, 1202 (1987)

S.M.Perez

Predictions for Magnetic Moments and β-Decay Transition Strengths for Mirror Nuclei

NUCLEAR STRUCTURE 23Mg, 33Cl, 37Ar, 43Ti, 51Fe, 55Ni; calculated μ. Empirical mirror β-decay input, correlation.

doi: 10.1103/PhysRevC.36.1202
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1984CL06      Nucl.Phys. A423, 10 (1984)

C.F.Clement, D.Wilmore, S.M.Perez

The Continuum Strength of Single-Particle States in Nuclei

NUCLEAR STRUCTURE 28Si, 32S, 40Ca; calculated stripping, pickup spectroscopic strengths. Empirical optical model, continuum calculation.

doi: 10.1016/0375-9474(84)90295-1
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1984MC05      Z.Phys. A315, 189 (1984)

W.R.McMurray, K.Bharuth-Ram, S.M.Perez

Excitation of the Analogue of the T( > ) Giant Dipole Resonance of 90Zr via the (n, p) Reaction

NUCLEAR REACTIONS 90Zr(n, p), E=21.8 MeV; measured σ(Ep, θ). 90Zr deduced GDR T( > ) component, other resonance excitation. DWBA analysis, Lane potential.

doi: 10.1007/BF01419378
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1983BU07      Phys.Rev.Lett. 50, 1975 (1983); Erratum Phys.Rev.Lett. 51, 1395 (1983)

B.Buck, S.M.Perez

New Look at Magnetic Moments and Beta Decays of Mirror Nuclei

NUCLEAR STRUCTURE A=3-43; analyzed μ, β-decay data; deduced axial vector coupling constant quenching, effective orbital nucleon g factors. Model independent method.

doi: 10.1103/PhysRevLett.50.1975
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1981BI15      J.Phys.(London) G7, 1647 (1981)

M.C.Birse, C.F.Clement, S.M.Perez

Sum Rules for Two Identical-Nucleon Transfer Reactions on Odd-Mass Nuclei

NUCLEAR STRUCTURE 45Sc; calculated two-nucleon transfer operator reduced matrix elements. Single-step transfer.

doi: 10.1088/0305-4616/7/12/013
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1981CL03      Phys.Lett. 100B, 294 (1981)

C.F.Clement, S.M.Perez

Observables for the Even Type of Nucleon in the Ground States of Odd-Mass Nuclei

NUCLEAR STRUCTURE 45Sc, 49,47Ti; calculated multipole matrix elements. Even type nucleon in ground state.

doi: 10.1016/0370-2693(81)90090-3
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1981CL04      Nucl.Phys. A362, 86 (1981)

C.F.Clement, S.M.Perez

Multipole Moments and Spin-Dependent Sum Rules and Their Applications to f7/2 and s-d Shell Nuclei

NUCLEAR STRUCTURE 41,43Ca, 45Sc, 51V, 49Ti; calculated multipole matrix elements, f7/2-shell nucleon occupancy; 45Sc, 49Ti; calculated f7/2-nucleon transfer S; 49Ti, 51V; calculated quadrupole moment; 26Al, 30P, 34Cl; calculated proton transfer S; 28Al, 36Cl, 32P; calculated neutron transfer S; 31P; calculated neutron pickup S. Spin-dependent spectroscopic sum rules, separate neutron, proton multipole operaters.

doi: 10.1016/0375-9474(81)90671-0
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1981CL05      J.Phys.(London) G7, L293 (1981)

C.F.Clement, S.M.Perez

The Determination of j> and j< Components of Spectroscopic Sums for One-Nucleon Transfer using Approximate Non-Energy-Weighted Sum Rules

NUCLEAR STRUCTURE 19F, 29Si; calculated one-nucleon transfer S j-dependence. Approximate nonenergy-weighted sum rules, least squares method.

doi: 10.1088/0305-4616/7/3/006
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1979CL01      Phys.Lett. 81B, 269 (1979)

C.F.Clement, S.M.Perez

The Spin Dependence of Spectroscopic Sums for Nucleon Transfer on Odd-Mass Nuclei

NUCLEAR STRUCTURE 45Sc, 49Ti; calculated spectroscopic sums for stripping, pickup for f7/2 nucleon. Spherical multipole moment operator formalism.

doi: 10.1016/0370-2693(79)90332-0
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1978CL06      Phys.Lett. 77B, 145 (1978)

C.F.Clement, S.M.Perez

f7/2 Neutron Occupancies in the Ca Isotopes

NUCLEAR STRUCTURE 40,41,42,43,44Ca; calculated neutron occupancies.

doi: 10.1016/0370-2693(78)90608-1
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1977BH01      Nucl.Phys. A278, 285 (1977)

K.Bharuth-Ram, S.M.Perez, F.D.Brooks, S.A.R.Wynchank, W.R.McMurray

Excitation of the Analogue Dipole State in 28Al via the Reaction 28Si(n, p)28Al

NUCLEAR REACTIONS 28Si(n, p), E=21.6 MeV; measured σ(Ep, θ(p)). Natural target.

doi: 10.1016/0375-9474(77)90240-8
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1977CH01      Phys.Rev. C15, 53 (1977)

N.S.Chant, N.S.Wall, C.F.Clement, S.M.Perez, J.N.Craig

Normalization of the (d, 3He) Reaction

NUCLEAR REACTIONS 12C, 51V(d, 3He), E=80 MeV; analyzed relative S; deduced normalization constant. J-dependent sum rule analysis.

doi: 10.1103/PhysRevC.15.53
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1977CL01      Nucl.Phys. A284, 469 (1977)

C.F.Clement, S.M.Perez

Non-Energy-Weighted Sum Rule Analysis of One Nucleon Transfer Data on 41Ca, 43Ca, 45Sc, 49Ti and 51V and the Validity of the Shell Model

NUCLEAR STRUCTURE 41,43Ca, 45Sc, 51V, 49Ti; analyzed spin dependent sum-rules for S. 51V deduced inconsistency with Hartree-Fock-Bogolyubov calculations.

doi: 10.1016/0375-9474(77)90397-9
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1976CL01      Phys.Lett. 62B, 381 (1976)

C.F.Clement, S.M.Perez

Effective 1f27/2 Matrix Elements from Energy-Weighted Sum Rule Analyses of One Nucleon Transfer Reactions on 43Ca, 45Sc, 48Ti and 51V

NUCLEAR STRUCTURE 48,42Sc; calculated levels.

doi: 10.1016/0370-2693(76)90662-6
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1976CL02      J.Phys.(London) G2, L77 (1976)

C.F.Clement, B.Georgiev, S.M.Perez

Quadrupole Moments of 1s-0d Shell Nuclei

NUCLEAR STRUCTURE 23Na, 35,37Cl, 39K; calculated quadrupole moments from spectroscopic data.

doi: 10.1088/0305-4616/2/6/001
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1974CL05      J.Phys.(London) A7, L93 (1974)

C.F.Clement, S.M.Perez

Quadrupole Moments of 35,37Cl in the Overlap Representation

NUCLEAR STRUCTURE 35,37Cl; calculated quadrupole moment.

doi: 10.1088/0305-4470/7/8/001
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1974CL09      J.Phys.(London) A7, 1464 (1974)

C.F.Clement, S.M.Perez

The Absolute Normalization of Spectroscopic Factors for Proton Transfer Reactions on 35,37Cl

NUCLEAR REACTIONS 35,37Cl(d, 3He), (3He, d); calculated S.

doi: 10.1088/0305-4470/7/12/011
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1973CL11      Nucl.Phys. A213, 510 (1973)

C.F.Clement, S.M.Perez

Application of Spin-Dependent Sum Rules for Spectroscopic Factors to Transfer Reactions on 45Sc

NUCLEAR REACTIONS 45Sc(d, p), (d, t); measured nothing. 44,46Sc levels deduced J, π.

doi: 10.1016/0375-9474(73)90749-5
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1973PE09      Nucl.Phys. A208, 449 (1973)

S.M.Perez, H.G.Benson

A Theoretical Study of Core-Polarisation Effects on E2 Transitions in Mass-19 Nuclei and in the 19F(p, p')19F Reaction

NUCLEAR STRUCTURE 19F, 19Ne; calculated core polarization, γ-multipolarities, S.

NUCLEAR REACTIONS 19F(p, p'), E=17.5 MeV; calculated σ(θ).

doi: 10.1016/0375-9474(73)90667-2
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1973PE13      Phys.Rev. C8, 1606 (1973)

S.M.Perez

Possible Form for the 6Li-6Li Optical Potential

NUCLEAR REACTIONS 6Li(6Li, 6Li), E(cm)=9-16 MeV; calculated σ(θ); deduced optical-model parameters.

doi: 10.1103/PhysRevC.8.1606
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1972CL14      Nucl.Phys. A196, 561 (1972)

C.F.Clement, S.M.Perez

Zero Orbital Angular Momentum Transfer Reactions Induced by 6Li Ions

doi: 10.1016/0375-9474(72)90793-2
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1971CL05      Nucl.Phys. A165, 569 (1971)

C.F.Clement, S.M.Perez

The Excitation of Analogue-Dipole States

NUCLEAR REACTIONS 58Ni(n, p), E=15, 22 MeV; calculated σ(θ).

doi: 10.1016/0375-9474(71)90471-4
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1970CL09      Phys.Lett. 33B, 391 (1970)

C.F.Clement, S.M.Perez

Excitation of the Nuclear Giant Dipole State by α-Particles

NUCLEAR REACTIONS 208Pb(α, α'γ), E=65 MeV; calculated σ(θ) for giant dipole state excitation.

doi: 10.1016/0370-2693(70)90612-X
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1970PE19      Phys.Lett. 33B, 317 (1970)

S.M.Perez

Gamma Particle-Hole States in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated levels, giant dipole resonance strength.

doi: 10.1016/0370-2693(70)90240-6
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1969PE10      Nucl.Phys. A136, 599 (1969)

S.M.Perez

Particle-Hole States in 16O and 40Ca

NUCLEAR STRUCTURE 16O, 40Ca; calculated negative-parity levels. Particle-hole model.

doi: 10.1016/0375-9474(69)90131-6
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1968DI06      Nucl.Phys. A114, 330(1968)

O.Dietzsch, R.A.Douglas, E.F.Pessoa, V.G.Porto, E.W.Hamburger, T.Polga, O.Sala, S.M.Perez, P.E.Hodgson

Deuteron-Induced Reactions on 16O

NUCLEAR REACTIONS 16O(d, d), (d, p), (d, n), (d, α), E=2 to 3.5 MeV; measured σ(E;θ).

doi: 10.1016/0375-9474(68)90358-8
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