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NSR database version of April 24, 2024.

Search: Author = A.A.Chishti

Found 19 matches.

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1997AH04      Phys.Rev. C55, R2755 (1997)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, J.S.Greenberg, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration

Internal Pair Conversion in Heavy Nuclei

NUCLEAR REACTIONS 206Pb(206Pb, X), E=5.90 MeV/nucleon; measured e+e--sum energy spectra, Doppler corrected Eγ; deduced internal pair conversion to gamma branching ratio. 232Th(208Pb, X), E=5.80 MeV/nucleon; 238U(208Pb, X), E=5.80 MeV/nucleon; 181Ta(238U, X), E=5.95 MeV/nucleon; 232Th(238U, X), E=5.90 MeV/nucleon; measured e+e--sum energy, Doppler corrected Eγ; deduced no discrete lines evidence in e+e- spectra. 238U deduced new levels evidence.

doi: 10.1103/PhysRevC.55.R2755
Citations: PlumX Metrics

1993CH41      Phys.Rev. C48, 2607 (1993)

A.A.Chishti, P.Chowdhury, D.J.Blumenthal, P.J.Ennis, C.J.Lister, Ch.Winter, D.Vretenar, G.Bonsignori, M.Savoia

Collectivity in Light Zirconium Isotopes: Evolution with neutron number and angular momentum

NUCLEAR REACTIONS 58Ni(29Si, n2p), E=110 MeV; measured Eγ, Iγ, DCO ratios. 58Ni(32S, 2pα), E=110 MeV; measured Iγ(θ). 54Fe(33S, n2p), E=105 MeV; analyzed data. 58Ni(28Si, 2n2p), E not given; measured recoil distance. 84Zr deduced levels, J, π, band structure. 82Zr levels deduced T1/2. Models comparison.

NUCLEAR STRUCTURE 86,84,82Zr; calculated levels, g factors, B(λ). Interacting boson model, collective core inclusion.

doi: 10.1103/PhysRevC.48.2607
Citations: PlumX Metrics

1993KA34      Nucl.Instrum.Methods Phys.Res. A330, 447 (1993)

N.I.Kaloskamis, K.C.Chan, A.A.Chishti, J.S.Greenberg, C.J.Lister, S.J.Freedman, M.Wolanski, J.Last, B.Utts

The Trigger Detector for APEX: An array of position-sensitive NaI(Tl) detectors for the imaging of positrons from heavy-ion collisions

RADIOACTIVITY 68Ge(EC); measured γγ-coin. Position sensitive cylindrical NaI(Tl) detector.

doi: 10.1016/0168-9002(93)90574-2
Citations: PlumX Metrics

1993MC03      Z.Phys. A344, 369 (1993)

J.H.McNeill, A.A.Chishti, P.J.Daly, W.Gelletly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley, P.J.Woods, J.Blomqvist

Isomeric Decay Studies using a Recoil Mass Separator. Exotic N = 82 and 83 Nuclei 153Yb, 153Lu, 154Lu and 154Hf

NUCLEAR REACTIONS 102Pd(54Fe, X), E=245 MeV; measured γ(recoil)-, γγ-coin. 153Yb, 153,154Lu deduced isomer decay, levels, J, π, B(λ), transition Iγ, configuration. 154Hf deduced levels, J, π, configuration.

doi: 10.1007/BF01283192
Citations: PlumX Metrics

1991HE02      Phys.Rev. C43, R921 (1991)

J.Heese, D.J.Blumenthal, A.A.Chishti, P.Chowdhury, B.Crowell, P.J.Ennis, C.J.Lister, Ch.Winter

Observation of Simultaneous g9/2 Proton and Neutron Alignment in 74Kr

NUCLEAR REACTIONS 40Ca(40Ca, 2pα), E=125, 140 MeV; measured Iγ, Eγ, γγ-coin, αγγ-coin, DSA. 74Kr deduced levels, J, π, T1/2, rotational bands, B(E2), transitional quadrupole moments, deformation parameters.

doi: 10.1103/PhysRevC.43.R921
Citations: PlumX Metrics

1990CH07      J.Phys.(London) G16, 481 (1990)

A.A.Chishti, W.Gelletly, C.J.Lister, B.J.Varley, O.Skeppstedt

Alignment Anomalies in the Study of High Spins in 79Sr

NUCLEAR REACTIONS 58Ni(24Mg, n2p), E=65-110 MeV; 24Mg(58Ni, n2p), E=190 MeV; measured γγ-, (recoil)γγ-coin. 79Sr deduced levels, J, π, band structure.

doi: 10.1088/0954-3899/16/3/018
Citations: PlumX Metrics

1990HE04      Phys.Rev. C41, 603 (1990)

J.Heese, K.P.Lieb, S.Ulbig, B.Wormann, J.Billowes, A.A.Chishti, W.Gelletly, C.J.Lister, B.J.Varley

Electromagnetic Transition Strengths between High Spin States in 79Sr and 80Sr

NUCLEAR REACTIONS 58Ni(24Mg, n2p), (24Mg, 2p), E=80, 85 MeV; 54Fe(32S, 2pα), E=103, 107 MeV; measured Eγ, Iγ, γγ-, nγ-coin, DSA. 79Sr deduced levels, J, π, T1/2, rotational bands, B(E2), transitional quadrupole moments, deformation parameters. 80Sr deduced levels, T1/2, B(E2), transitional quadrupole moments. Cranked shell model.

doi: 10.1103/PhysRevC.41.603
Citations: PlumX Metrics

1990LI25      Phys.Rev. C42, R1191 (1990)

C.J.Lister, P.J.Ennis, A.A.Chishti, B.J.Varley, W.Gelletly, H.G.Price, A.N.James

Shape Changes in N = Z Nuclei from Germanium to Zirconium

NUCLEAR REACTIONS, ICPND 12C(54Fe, 2n), E=155, 165 MeV; 12C(58Ni, 2n), E=175 MeV; 24Mg(54Fe, 2n), E=175 MeV; measured Eγ, Iγ, γγ-, recoil γ-, recoil γγ-coin, production σ. 64Ge, 68Se, 76Sr deduced levels. Compton suppressed Ge detectors, recoil separator, NE213 detectors.

doi: 10.1103/PhysRevC.42.R1191
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1990MC02      Z.Phys. A335, 241 (1990)

J.H.McNeill, J.Blomqvist, A.A.Chishti, P.J.Daly, W.Gelletly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley, P.J.Woods

A 35 μs Isomer in the Exotic N = 83 Nucleus 154Lu

NUCLEAR REACTIONS 102Pd(54Fe, X), E=245 MeV; measured γγ-coin. 154Lu deduced isomer T1/2, decay features, levels, J, π, configuration, B(λ).

1990SK02      Nucl.Phys. A511, 137 (1990)

O.Skeppstedt, C.J.Lister, A.A.Chishti, B.J.Varley, W.Gelletly, U.Lenz, R.Moscrop, L.Goettig

High-Spin Structure of 79Rb

NUCLEAR REACTIONS 24Mg(58Ni, 3p), E=190 MeV; measured Eγ, Iγ, γγ-coin. 79Rb deduced levels, J, π. Enriched target, germanium detector array, recoil separator.

doi: 10.1016/0375-9474(90)90030-P
Citations: PlumX Metrics

1989CH36      Nucl.Phys. A501, 568 (1989)

A.A.Chishti, W.Gelletly, C.J.Lister, J.H.McNeill, B.J.Varley, D.J.G.Love, O.Skeppstedt

High-Spin States in 75Kr

NUCLEAR REACTIONS 24Mg(54Fe, n2p), E=177, 190 MeV; measured γγ-, nγγ-coin. 75Kr deduced levels, J, π, band structure.

doi: 10.1016/0375-9474(89)90149-8
Citations: PlumX Metrics

1989GR07      Phys.Rev. C39, 1780 (1989)

C.J.Gross, J.Heese, K.P.Lieb, C.J.Lister, B.J.Varley, A.A.Chishti, J.H.McNeil, W.Gelletly

High Spin States in 78Sr

NUCLEAR REACTIONS 58Ni(24Mg, 2n2p), E=110 MeV; measured Eγ, Iγ, γγ-, nγγ-coin. 78Sr deduced levels, J, π. Cranked shell model.

doi: 10.1103/PhysRevC.39.1780
Citations: PlumX Metrics

1989GR21      Nucl.Phys. A501, 367 (1989)

C.J.Gross, J.Heese, K.P.Lieb, S.Ulbig, W.Nazarewicz, C.J.Lister, B.J.Varley, J.Billowes, A.A.Chishti, J.H.McNeill, W.Gelletly

Band Crossings and Near-Rigid Rotation in 76Kr and 78Kr

NUCLEAR REACTIONS 58Ni(24Mg, 2pα), E=85, 110 MeV; 58Ni(24Mg, 4p), E=110 MeV; measured Eγ, Iγ, γγ-coin, DSA. 76,78Kr deduced levels, J, π, T1/2, band structure. Enriched target.

doi: 10.1016/0375-9474(89)90298-4
Citations: PlumX Metrics

1989MC01      Z.Phys. A332, 105 (1989)

J.H.McNeill, A.A.Chishti, P.J.Daly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley

A 15 μs Isomer in the Z = 70 N = 83 Nucleus 153Yb

NUCLEAR REACTIONS 102Pd(54Fe, X), E=245 MeV; measured Eγ, Iγ, γγ-, γ(X-ray)-coin. 153Yb deduced isomer, T1/2, J, π, configuration. Fusion-evaporation recoil product mass analysis.

1989MC07      Phys.Rev.Lett. 63, 860 (1989)

J.H.McNeill, J.Blomqvist, A.A.Chishti, P.J.Daly, W.Gelletly, M.A.C.Hotchkis, M.Piiparinen, B.J.Varley, P.J.Woods

Exotic N = 82 Nuclei 153Lu and 154Hf and Filling of the πh11/2 Subshell

NUCLEAR REACTIONS 102Pd(54Fe, 2n), (54Fe, np), (54Fe, 2np), (54Fe, n2p), E=235, 245 MeV; measured relative isomeric yields; calculated residual production σ. γ-ray spectroscopy.

RADIOACTIVITY 153mLu, 154mHf [from 102Pd(54Fe, xnyp), E=235, 245 MeV]; measured γγ-, γ(X-ray)-coin; deduced isomer T1/2, configuration, decay scheme, level J, π, B(λ).

doi: 10.1103/PhysRevLett.63.860
Citations: PlumX Metrics

1988GR23      Z.Phys. A331, 361 (1988)

C.J.Gross, J.Heese, K.P.Lieb, L.Luhmann, B.Wormann, A.A.Chishti, W.Gelletly, C.J.Lister, J.H.McNeill, B.J.Varley

Simultaneous g9/2 Proton and Neutron Alignments in 76Kr

NUCLEAR REACTIONS 58Ni(24Mg, 2pα), E=110 MeV; 40Ca(40Ca, 4p), E=155 MeV; measured Eγ, Iγ, γγ-coin. 76Kr deduced levels, J, π, moment of inertia, alignment features.

1988MO24      J.Phys.(London) G14, L189 (1988)

R.Moscrop, A.A.Chishti, W.Gelletly, C.J.Lister, B.J.Varley

Pseudo-Mirror Nuclei with A = 100 and A = 130

NUCLEAR STRUCTURE 100,104,106Mo, 130,128,126Ce, 134,132,130Nd, 98,100,102Zr; analyzed, compared A ≈ 100, A ≈ 130 levels; deduced similarity, pseudo-mirror nature.

doi: 10.1088/0305-4616/14/9/003
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1987LI14      Phys.Rev.Lett. 59, 1270 (1987)

C.J.Lister, M.Campbell, A.A.Chishti, W.Gelletly, L.Goettig, R.Moscrop, B.J.Varley, A.N.James, T.Morrison, H.G.Price, J.Simpson, K.Connel, O.Skeppstedt

Gamma Radiation from the N = Z Nucleus 8040Zr40

NUCLEAR REACTIONS 24Mg(58Ni, 2n), E=180 MeV; measured σ, Eγ, Iγ, γγ-coin. 80Zr deduced levels, quadrupole deformation. Recoil separator, Ge detectors.

doi: 10.1103/PhysRevLett.59.1270
Citations: PlumX Metrics

1987VA23      Phys.Lett. 194B, 463 (1987)

B.J.Varley, M.Campbell, A.A.Chishti, W.Gelletly, L.Goettig, C.J.Lister, A.N.James, O.Skeppstedt

Evidence for Shape Coexistence in the N = Z Nucleus 3672Kr36

NUCLEAR REACTIONS 16O(58Ni, 2n), E=170 MeV; measured Eγ, Iγ, σ. 72Kr deduced level, production σ, γ transitions. Recoil Separator.

doi: 10.1016/0370-2693(87)90217-6
Citations: PlumX Metrics

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