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NSR database version of May 24, 2024.

Search: Author = M.E.Estevez

Found 11 matches.

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2012AL05      Phys.Rev. C 85, 034301 (2012); Pub.Note Phys.Rev. C 85, 039904 (2012)

N.Al-Dahan, P.H.Regan, Zs.Podolyak, P.M.Walker, N.Alkhomashi, G.D.Dracoulis, G.Farrelly, J.Benlliure, S.B.Pietri, R.F.Casten, P.D.Stevenson, W.Gelletly, S.J.Steer, A.B.Garnsworthy, E.Casarejos, J.Gerl, H.J.Wollersheim, J.Grebosz, M.Gorska, I.Kojouharov, H.Schaffner, A.Algora, G.Benzoni, A.Blazhev, P.Boutachkov, A.M.Bruce, I.J.Cullen, A.M.D.Bacelar, A.Y.Deo, M.E.Estevez, Y.Fujita, R.Hoischen, R.Kumar, S.Lalkovski, Z.Liu, P.J.Mason, C.Mihai, F.Molina, D.Mucher, B.Rubio, A.Tamii, S.Tashenov, J.J.Valiente-Dobon, P.J.Woods

Multiple Β- decaying states in 194Re: Shape evolution in neutron-rich osmium isotopes

NUCLEAR REACTIONS 9Be(208Pb, X)186Hf/187Hf/188Hf/189Hf/188Ta/189Ta/190Ta/191Ta/190W/191W/192W/193W/192Re/193Re/194Re/195Re/196Re/195Os/196Os/197Os/198Os, E=1 GeV/nucleon; measured fragment yields, ion identification by energy loss and time-of-flight methods; deduced decay properties. GSI FRagment Separator (FRS), RISING spectrometer.

RADIOACTIVITY 192,194Re[from 9Be(208Pb, X), E=1 GeV/nucleon](β-); 194Os[from 194Re decay](α); measured Eγ, Iγ, βγ-, (implants)γ-coin, recoil-decay tagging method, half-life. 194Os; deduced levels, J, π. 187Hf, 188,189,190Ta, 190,191W, 192,193Re(IT); measured Eγ, Iγ, half-lives. GSI FRagment Separator (FRS), RISING spectrometer. Systematics of low-lying 0+, 2+, 4+ and 6+ states in N=110-122 Os and W nuclei.

NUCLEAR STRUCTURE 194Re; calculated levels, J, π, configurations using Nilsson multi-quasiparticle (MQP) model.

doi: 10.1103/PhysRevC.85.034301
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2011ST21      Phys.Rev. C 84, 044313 (2011)

S.J.Steer, Zs.Podolyak, S.Pietri, M.Gorska, H.Grawe, K.H.Maier, P.H.Regan, D.Rudolph, A.B.Garnsworthy, R.Hoischen, J.Gerl, H.J.Wollersheim, F.Becker, P.Bednarczyk, L.Caceres, P.Doornenbal, H.Geissel, J.Grebosz, A.Kelic, I.Kojouharov, N.Kurz, F.Montes, W.Prokopwicz, T.Saito, H.Schaffner, S.Tashenov, A.Heinz, M.Pfutzner, T.Kurtukian-Nieto, G.Benzoni, A.Jungclaus, D.L.Balabanski, M.Bowry, C.Brandau, A.Brown, A.M.Bruce, W.N.Catford, I.J.Cullen, Zs.Dombradi, M.E.Estevez, W.Gelletly, G.Ilie, J.Jolie, G.A.Jones, M.Kmiecik, F.G.Kondev, R.Krucken, S.Lalkovski, Z.Liu, A.Maj, S.Myalski, S.Schwertel, T.Shizuma, P.M.Walker, E.Werner-Malento, O.Wieland

Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a 208Pb beam

NUCLEAR REACTIONS 9Be(208Pb, X)183Hf/184Hf/185Hf/186Hf/187Hf/188Hf/186Ta/187Ta/188Ta/189Ta/190Ta/189W/190W/191W/192W/193W/194W/192Re/193Re/194Re/195Re/196Re/197Re/195Os/196Os/197Os/198Os/199Os/200Os/197Ir/198Ir/199Ir/200Ir/201Ir/202Ir/203Ir/200Pt/201Pt/202Pt/203Pt/204Pt/204Au/205Au, E=1 GeV/nucleon; measured magnetic rigidity, energy loss, time of flight, Eγ, Iγ, isomeric half-lives and ratios. FRS at GSI facility. 206Tl, 203,204,205,206Hg, 201,202,203,204,205Au, 197,198,199,200,201,202,203,204Pt, 195,198,199,200,201,202,203Ir, 193,195,197,198,199Os, 191,192,193,194,196Re, 190,191W, 188,189Ta; deduced levels, isomers, J, π, half-lives, B(E2), B(M2), B(E3), B(M4). Comparison with shell-model and BCS calculations.

doi: 10.1103/PhysRevC.84.044313
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2009AL16      Acta Phys.Pol. B40, 875 (2009)

N.Alkhomashi, P.H.Regan, Zs.Podolyak, S.B.Pietri, A.B.Garnsworthy, S.J.Steer, J.Benlliure, E.Caserejos, M.Gorska, J.Gerl, H.J.Wollersheim, J.Grebosz, N.Kurz, I.Kojouharov, H.Schaffner, A.Algora, G.Benzoni, A.Blazhev, P.Boutachkov, A.M.Bruce, L.Caceres, P.Doornenbal, A.M.D.Bacelar, I.J.Cullen, M.E.Estevez, G.Farrelly, Y.Fujita, W.Gelletly, R.Hoischen, R.Kumar, S.Lalkovski, Z.Liu, C.Mihai, F.Molina, D.Mucher, B.Rubio, A.Tamii, S.Tashenov, J.J.Valiente-Dobon, P.M.Walker, P.J.Woods

β--Delayed and Isomer Spectroscopy of Neutron-Rich Ta and W Isotopes

RADIOACTIVITY 188Ta, 190,191W, 192,193Re, 189Ta(IT), 188Ta(β-); measured Eγ, Iγ, βγ-coin., isomeric states.


2009AL30      Phys.Rev. C 80, 064308 (2009)

N.Alkhomashi, P.H.Regan, Zs.Podolyak, S.Pietri, A.B.Garnsworthy, S.J.Steer, J.Benlliure, E.Caserejos, R.F.Casten, J.Gerl, H.J.Wollersheim, J.Grebosz, G.Farrelly, M.Gorska, I.Kojouharov, H.Schaffner, A.Algora, G.Benzoni, A.Blazhev, P.Boutachkov, A.M.Bruce, A.M.D.Bacelar, I.J.Cullen, L.Caceres, P.Doornenbal, M.E.Estevez, Y.Fujita, W.Gelletly, R.Hoischen, R.Kumar, N.Kurz, S.Lalkovski, Z.Liu, C.Mihai, F.Molina, A.I.Morales, D.Mucher, W.Prokopowicz, B.Rubio, Y.Shi, A.Tamii, S.Tashenov, J.J.Valiente-Dobon, P.M.Walker, P.J.Woods, F.R.Xu

β+-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

NUCLEAR REACTIONS Be(208Pb, X)186Hf/187Hf/188Hf/189Hf/188Ta/189Ta/190Ta/191Ta/192Ta/190W/191W/192W/193W/194W/192Re/193Re/194Re/195Re/196Re, E=1 GeV/nucleon; measured yields. 187Hf, 188,189,190Ta, 190,191W, 192,193Re; measured delayed γ; deduced isomers and half-lives.

RADIOACTIVITY 188,190,192Ta(β-)[from Be(208Pb, X), E=1 GeV/nucleon]; measured Eγ, Iγ, γγ-coin, βγ correlations, and half-lives using GSI Fragment separator, MUSIC ionization chamber; and RISING array. 188,190,192W; deduced levels, J, π, logft. Comparison with interacting boson approximation (IBA-1) calculations for 190W. Z=56-80, N=84-122; discussed systematics of first 2+ and 4+ states, B(E2), and γ deformation parameter in even-even nuclei.

doi: 10.1103/PhysRevC.80.064308
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2009MO17      Acta Phys.Pol. B40, 867 (2009)

A.I.Morales, J.Benlliure, P.H.Regan, Z.Podolyak, M.Gorska, N.Alkhomashi, S.Pietri, R.Kumar, E.Casarejos, J.Agramunt, A.Algora, H.Alvarez-Pol, G.Benzoni, A.Blazhev, P.Boutachkov, A.M.Bruce, L.S.Caceres, I.J.Cullen, A.M.D.Bacelar, P.Doornenbal, D.Dragosavac, M.E.Estevez, G.Farrelly, Y.Fujita, A.B.Garnsworthy, W.Gelletly, J.Gerl, J.Grebosz, R.Hoischen, I.Kojouharov, N.Kurz, S.Lalkovski, Z.Liu, D.Perez-Loureiro, W.Prokopowicz, C.Mihai, F.Molina, D.Mucher, B.Rubio, H.Schaffner, S.J.Steer, A.Tamii, S.Tashenov, J.J.Valiente Dobon, S.Verma, P.M.Walker, H.J.Wollersheim, P.J.Woods

β-Delayed g-Ray Spectroscopy of Heavy Neutron Rich Nuclei "South" of Lead

RADIOACTIVITY 204Pt(β-); measured delayed βγ-coin., Eγ, Iγ. deduced T1/2.

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2009PO01      Phys.Lett. B 672, 116 (2009)

Zs.Podolyak, G.F.Farrelly, P.H.Regan, A.B.Garnsworthy, S.J.Steer, M.Gorska, J.Benlliure, E.Casarejos, S.Pietri, J.Gerl, H.J.Wollersheim, R.Kumar, F.Molina, A.Algora, N.Alkhomashi, G.Benzoni, A.Blazhev, P.Boutachkov, A.M.Bruce, L.Caceres, I.J.Cullen, A.M.D.Bacelar, P.Doornenbal, M.E.Estevez, Y.Fujita, W.Gelletly, H.Geissel, H.Grawe, J.Grebosz, R.Hoischen, I.Kojouharov, S.Lalkovski, Z.Liu, K.H.Maier, C.Mihai, D.Mucher, B.Rubio, H.Schaffner, A.Tamii, S.Tashenov, J.J.Valiente-Dobon, P.M.Walker, P.J.Woods

Proton-hole excitation in the closed shell nucleus 205Au

NUCLEAR REACTIONS Be(208Pb, 205Au), E=1 GeV/nucleon; measured delayed charged-particle, γ spectra, (fragment)γ-, (fragment)(charged-particle)-coin. 205Au deduced levels, J, π, T1/2, configurations, B(M4) upper limit. Comparison with shell-model.

doi: 10.1016/j.physletb.2009.01.007
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2009PO14      Eur.Phys.J. A 42, 489 (2009)

Zs.Podolyak, S.J.Steer, S.Pietri, M.Gorska, P.H.Regan, D.Rudolph, A.B.Garnsworthy, R.Hoischen, J.Gerl, H.J.Wollersheim, H.Grawe, K.H.Maier, F.Becker, P.Bednarczyk, L.Caceres, P.Doornenbal, H.Geissel, J.Grebosz, A.Kelic, I.Kojouharov, N.Kurz, F.Montes, W.Prokopowicz, T.Saito, H.Schaffner, S.Tashenov, A.Heinz, T.Kurtukian-Nieto, G.Benzoni, M.Pfutzner, A.Jungclaus, D.L.Balabanski, C.Brandau, B.A.Brown, A.M.Bruce, W.N.Catford, I.J.Cullen, Zs.Dombradi, M.E.Estevez, W.Gelletly, G.Ilie, J.Jolie, G.A.Jones, M.Kmiecik, F.G.Kondev, R.Krucken, S.Lalkovski, Z.Liu, A.Maj, S.Myalski, S.Schwertel, T.Shizuma, P.M.Walker, E.Werner-Malento, O.Wieland

Structure of neutron-rich nuclei around the N = 126 closed shell; the yrast structure of 205Au126 up to spin-parity Iπ = (19/2+)

NUCLEAR REACTIONS 9Be(208Pb, X)205Au, E=1 GeV/nucleon; measured Eγ, Iγ, γγ-coin using RISING array and FRS. 205Au; deduced high-spin yrast levels, J, π, B(E2), B(E3). Comparison with OXBASH shell model and systematics.

doi: 10.1140/epja/i2009-10794-5
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2009ST16      Int.J.Mod.Phys. E18, 1002 (2009)

S.J.Steer, Zs.Podolyak, S.Pietri, M.Gorska, G.F.Farrelly, P.H.Regan, D.Rudolph, A.B.Garnsworthy, R.Hoischen, J.Gerl, H.J.Wollersheim, H.Grawe, K.H.Maier, F.Becker, P.Bednarczyk, L.Caceres, P.Doornenbal, H.Geissel, J.Grebosz, A.Kelic, I.Kojouharov, N.Kurz, F.Montes, W.Prokopowicz, T.Saito, H.Schaffner, S.Tashenov, A.Heinz, T.Kurtukian-nieto, G.Benzoni, M.Pfutzner, A.Jungclaus, D.L.Balabanski, C.Brandau, A.Brown, A.M.Bruce, W.N.Catford, I.J.Cullen, Zs.Dombradi, M.E.Estevez, W.Gelletly, G.Ilie, J.Jolie, G.A.Jones, M.Kmiecik, F.G.Kondev, R.Krucken, S.Lalkovski, Z.Liu, A.Maj, S.Myalski, S.Schwertel, T.Shizuma, P.M.Walker, E.Werner-Malento, O.Wieland

Isomeric decay studies in neutron-rich N≈126 nuclei

NUCLEAR REACTIONS 9Be(208Pb, X)189Ta;9Be(208Pb, X)191W;9Be(208Pb, X)193Os;9Be(208Pb, X)197Os;9Be(208Pb, X)198Os;9Be(208Pb, X)199Os;9Be(208Pb, X)196Re;9Be(208Pb, X)195Ir;9Be(208Pb, X)199Ir;9Be(208Pb, X)200Ir;9Be(208Pb, X)201Ir;9Be(208Pb, X)202Ir;9Be(208Pb, X)203Ir;9Be(208Pb, X)197Pt;9Be(208Pb, X)199Pt;9Be(208Pb, X)203Pt;9Be(208Pb, X)204Pt;9Be(208Pb, X)201Au;9Be(208Pb, X)202Au;9Be(208Pb, X)204Au;9Be(208Pb, X)205Au;9Be(208Pb, X)204Hg;9Be(208Pb, X)205Hg, E=1 GeV/nucleon; measured delayed Iγ, Eγ, isomer decay.

doi: 10.1142/S0218301309013154
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2008RE14      Int.J.Mod.Phys. E17, Supplement 1, 8 (2008)

P.H.Regan, N.Alkhomashi, N.Al-Dahan, Zs.Podolyak, S.B.Pietri, S.J.Steer, A.B.Garnsworthy, E.B.Suckling, P.D.Stevenson, G.Farrelly, I.J.Cullen, W.Gelletly, P.M.Walker, J.Benlliure, A.I.Morales, E.Casajeros, M.E.Estevez, J.Gerl, M.Gorska, H.J.Wollersheim, P.Boutachkov, S.Tashenov, I.Kojouharov, H.Schaffner, N.Kurz, R.Kumar, B.Rubio, A.Algora, F.Molina, J.Grebosz, G.Benzoni, D.Mucher, A.M.Bruce, A.M.D.Bacelar, S.Lalkovski, Y.Fujita, A.Tamii, R.Hoischen, Z.Liu, P.J.Woods, C.Mihai, J.J.Valiente-Dobon

First results with the rising active stopper

doi: 10.1142/S0218301308011719
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2008ST20      Phys.Rev. C 78, 061302 (2008)

S.J.Steer, Zs.Podolyak, S.Pietri, M.Gorska, P.H.Regan, D.Rudolph, E.Werner-Malento, A.B.Garnsworthy, R.Hoischen, J.Gerl, H.J.Wollersheim, K.H.Maier, H.Grawe, F.Becker, P.Bednarczyk, L.Caceres, P.Doornenbal, H.Geissel, J.Grebosz, A.Kelic, I.Kojouharov, N.Kurz, F.Montes, W.Prokopowicz, T.Saito, H.Schaffner, S.Tashenov, A.Heinz, M.Pfutzner, T.Kurtukian-Nieto, G.Benzoni, A.Jungclaus, D.L.Balabanski, C.Brandau, B.A.Brown, A.M.Bruce, W.N.Catford, I.J.Cullen, Zs.Dombradi, M.E.Estevez, W.Gelletly, G.Ilie, J.Jolie, G.A.Jones, M.Kmiecik, F.G.Kondev, R.Krucken, S.Lalkovski, Z.Liu, A.Maj, S.Myalski, S.Schwertel, T.Shizuma, P.M.Walker, O.Wieland

Single-particle behavior at N = 126: Isomeric decays in neutron-rich 204Pt

NUCLEAR REACTIONS 9Be(208Pb, X)194Re/195Re/196Re/196Os/197Os/198Os/199Os/199Ir/200Ir/201Ir/202Ir/202Pt/203Pt/204Pt/205Au, E=1 GeV/nucleon; measured Eγ, Iγ, half-lives, B(E2), B(E3). 204Pt; deduced levels, J, π. Comparisons with 206Hg and shell model calculations.

doi: 10.1103/PhysRevC.78.061302
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2007RE18      Nucl.Phys. A787, 491c (2007)

P.H.Regan, A.B.Garnsworthy, S.Pietri, L.Caceres, M.Gorska, D.Rudolph, Zs.Podolyak, S.J.Steer, R.Hoischen, J.Gerl, H.J.Wollersheim, J.Grebosz, H.Schaffner, W.Prokopwicz, I.Kojouharov, F.Becker, P.Bednarczyk, P.Doornenball, H.Geissel, H.Grawe, A.Kelic, N.Kurz, F.Montes, T.Saito, S.Tashenov, E.Werner-Malento, A.Heinz, L.Atanasova, D.Balabanski, G.Benzoni, B.Blank, A.Blazhev, C.Brandau, A.M.Bruce, W.N.Catford, F.Camera, I.J.Cullen, M.E.Estevez, C.Fahlander, W.Gelletly, G.Ilie, A.Jungclaus, J.Jolie, T.Kurtukian-Nieto, Z.Liu, M.Kmiecik, A.Maj, S.Myalski, S.Schwertel, T.Shizuma, A.J.Simons, P.M.Walker, O.Wieland

Isomer Spectroscopy Using Relativistic Projectile Fragmentation at the N=Z Line for A ∼ 80 → 90

NUCLEAR REACTIONS Be(107Ag, X)82Nb/84Nb/86Tc/87Tc/88Tc, E=750 MeV/nucleon; measured delayed Eγ, Iγ, (particle)γ-coin, yield. 82Nb, 86Tc deduced level energy of first excited state.

doi: 10.1016/j.nuclphysa.2006.12.073
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