NSR Query Results


Output year order : Descending
Format : Normal

NSR database version of March 2, 2024.

Search: Author = I.Ahmad

Found 465 matches.

    Showing 1 to 100.

   [Next]

Back to query form



2022AH03      Phys.Rev. C 106, 064329 (2022)

I.Ahmad, F.G.Kondev, M.Gott, J.P.Greene, K.Teh

α decay of the longest-lived Cm isotope: 24796Cm

RADIOACTIVITY 247Cm(α); analyzed Eα published in 1971FI01 using new information on calibration standards; measured Eα, Iα, Eγ, Iγ, αγ-coin; deduced γ transition energies and intensities per α-decay. 243Pa; deduced levels, J, π. Source from ORNL with approx. 1.6 Bq activity obtained in late 1960, produced by irradiation of 144Cm in high-flux reactor. Decay measured with Ge detector and planar silicon (PIPS) detector.

doi: 10.1103/PhysRevC.106.064329
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2022AM05      Appl.Radiat.Isot. 188, 110379 (2022)

N.Amjed, A.Naz, A.M.Wajid, M.N.Aslam, I.Ahmad

Nuclear model analysis and optimization of production data of the medically interesting 66, 67, 68Ga via alpha induced reactions on 63, 65Cu targets

NUCLEAR REACTIONS 63Cu(α, n), 65Cu(α, n), (α, 2n), E<50 MeV; calculated σ using TALYS 1.9, ALICE-IPPE, and EMPIRE 3.2; deduced evaluated σ by fitting calculated results to experimental data.

doi: 10.1016/j.apradiso.2022.110379
Citations: PlumX Metrics


2019AH02      Appl.Radiat.Isot. 145, 106 (2019)

I.Ahmad, F.G.Kondev

Decay properties of 2.05-h 24595Am

RADIOACTIVITY 245Am(β-); measured decay products, Eγ, Iγ; deduced γ-ray energies and intensities, decay scheme, J, π.

doi: 10.1016/j.apradiso.2018.11.015
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2019AH04      Nucl.Instrum.Methods Phys.Res. A940, 56 (2019)

I.Ahmad, F.G.Kondev

High-precision α-particle energies in the decay of Es, Fm, and Md Isotopes

RADIOACTIVITY 251,252,254Es, 251,252,253,254,255,256,257Fm, 255,256,257,258Md(α); analyzed previous data from 1970s at the Argonne National Laboratory with a magnetic spectrometer and with silicon detectors; deduced α-particles precise energies.

doi: 10.1016/j.nima.2019.05.091
Citations: PlumX Metrics


2019SH34      Phys.Rev. C 100, 034309 (2019)

U.Shirwadkar, S.K.Tandel, P.Chowdhury, T.L.Khoo, I.Ahmad, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, C.J.Lister, D.Peterson, D.Seweryniak, X.Wang, S.Zhu

Decay spectroscopy of two-quasiparticle K isomers in 246, 248Cm via inelastic and transfer reactions

NUCLEAR REACTIONS 248Cm(209Bi, 209Bi'), 248Cm(209Bi, X)246Cm, E=1450 MeV from ATLAS-ANL accelerator facility, with bursts between 1 μs to 8 s; measured Eγ, Iγ, γγ-coin, half-lives of isomers in 246Cm and 248Cm by γ(t) using Gammasphere array. 246,248Cm; deduced levels, J, π, K-isomers, two-quasineutron Nilsson configurations, reduced K hindrances, persistence of a deformed subshell gap at N=152 near Z≈100 from systematics of Kπ=8-, two-quasineutron isomeric states in N=150, Z=94-102 even-even nuclei.

doi: 10.1103/PhysRevC.100.034309
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2019UR01      Phys.Rev. C 99, 064325 (2019)

W.Urban, T.Rzaca-Urban, J.Wisniewski, I.Ahmad, A.G.Smith, G.S.Simpson

Structure of 0+ excitations in the mass A ≈ 100 region: 0+2 bands in 98Sr and 100Zr

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, and γγ(θ)(DCO) using the Eurogam2 and Gammasphere arrays for γ detection. 98Sr, 100Zr; deduced levels, J, π, B(E2), bands, configurations. Systematics of 0+ states, and β deformation in 90,92,94,96,98,100Sr, 92,94,96,98,100,102Zr, 94,96,98,100,102,104,106Mo, 96,98,100,102,104,106,108,110Ru, 100,104,106,108,110,112Pd, 106,108,110,112,114Cd, 108,110,112,114,116Sn.

doi: 10.1103/PhysRevC.99.064325
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2019UR02      Phys.Rev. C 100, 014319 (2019)

W.Urban, T.Rzaca-Urban, J.Wisniewski, A.G.Smith, G.S.Simpson, I.Ahmad

First observation of γ-soft and triaxial bands in Zr isotopes

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, and γγ(θ) using the Eurogam2 array at ILL-Grenoble, and Gammasphere array at ANL. 100,102Zr; deduced high-spin levels, J, π, multipolarities, mixing ratios, triaxial and γ bands, alignments and staggering in bands, γ softness and triaxiality in Zr isotopes.

doi: 10.1103/PhysRevC.100.014319
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2018AH01      Phys.Rev. C 97, 014324 (2018)

I.Ahmad, F.G.Kondev, J.P.Greene, S.Zhu

Decay properties of 24397BK and 24497BK

RADIOACTIVITY 243,244Bk(EC)[from 241Am(α, n), (α, 2n) followed by mass separation]; measured Eγ, Iγ, Cm x rays. 243,244Cm; deduced levels, J, π, ϵ feedings, logft values, configurations, 1/2[620] Nilsson orbital and band in 243Cm, octupole vibrational band and two-quasiparticle Nilsson states in 244Cm. Comparison with previous experimental results. 244Bk; discussed ground state Nilsson configuration.

doi: 10.1103/PhysRevC.97.014324
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2018LO18      Phys.Rev. C 98, 024323 (2018)

R.Lozeva, E.A.Stefanova, H.Naidja, F.Nowacki, T.Rzaca-Urban, J.Wisniewski, W.Urban, I.Ahmad, A.Blanc, G.De France, F.Didierjean, G.Duchene, H.Faust, J.P.Greene, U.Koster, P.Mutti, G.Simpson, A.G.Smith, T.Soldner, C.A.Ur

New yrast and non-yrast states in 136I and medium-spin structure of 136I and 136Xe : Roles of the proton d5/2 and the neutron h9/2 orbitals beyond 132Sn

NUCLEAR REACTIONS 235U, 241Pu(n, F)136I, E=thermal; measured Eγ, Iγ, γγ-coin, γγ(θ), γγ(linear pol) using the EXILL-FATIMA system, EXOGAM and EUROGAM clover HPGe detectors at ILL, Grenoble. 136I; deduced yrast and non-yrast levels, J, π, conversion coefficients, multipolarities, mixing ratios, configurations. Comparison with large scale shell-model calculations.

RADIOACTIVITY 248Cm, 252Cf(SF); 136Te, 136I(β-)[136Te from 235U(n, F), E=thermal followed by separation of 136Te using Lohengrin fission-fragment separator at Grenoble, and 136I from 136Te decay]; measured Eγ, Iγ, γγ-coin, γγ(θ), γγ(lin pol). 136I, 136Xe; deduced levels, J, π, conversion coefficients, multipolarities, mixing ratios, configurations, Gamow-Teller strengths. Comparison with large scale shell-model calculations.

doi: 10.1103/PhysRevC.98.024323
Citations: PlumX Metrics


2017NA15      Phys.Rev. C 95, 064303 (2017)

H.Naidja, F.Nowacki, B.Bounthong, M.Czerwinski, T.Rzaca-Urban, T.Roginski, W.Urban, J.Wisniewski, K.Sieja, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene

New excitations in 142Ba and 144Ce: Evolution of γ bands in the N=86 isotones

RADIOACTIVITY 252Cf(SF); 144La(β-)[from 252Cf SF]; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array at Argonne National Laboratory. 142Ba, 144Ce; deduced high-spin levels, J, π, multipolarity, mixing ratios. 140Xe; deduced multipolarity and mixing ratios from γγ(θ) data. Comparison with large-scale shell-model calculations.

NUCLEAR STRUCTURE 142Ba, 144Ce; calculated levels, J, π, quadrupole moments, B(E2), potential energy surfaces in (β, γ) plane using large-scale shell-model. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.064303
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2017UR03      Phys.Rev. C 96, 044333 (2017)

W.Urban, M.Czerwinski, J.Kurpeta, T.Rzaca-Urban, J.Wisniewski, T.Materna, L.W.Iskra, A.G.Smith, I.Ahmad, A.Blanc, H.Faust, U.Koster, M.Jentschel, P.Mutti, T.Soldner, G.S.Simpson, J.A.Pinston, G.de France, C.A.Ur, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, J.Rissanen, A.Saastamoinen, J.Szerypo, C.Weber, J.Aysto

Shape coexistence in the odd-odd nucleus 98Y: The role of the g9/2 neutron extruder

NUCLEAR REACTIONS 235U(n, F), E=cold neutrons from PF1B facility at ILL Grenoble; measured Eγ, Iγ, γγ-coin, delayed γγ-coin, half-lives of several isomers in 98Y using the EXILL array at Grenoble. 98Y; deduced levels, isomers, J, π, bands, configurations, deformed and spherical isomers.

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), γγ-coin with γ rays from fission partner 147La in 248Cm SF decay using Eurogam2 array at Grenoble and Gammasphere array at Argonne. 98Y; deduced levels, J, π, multipolarities. 98Sr, 98,98mY(β-)[from 235U(n, F), E=cold neutrons and using Lohengrin fission-fragment separator]; measured Eγ, Iγ, γγ-coin, γγ(θ), γγ(linear pol), half-lives of decays of 98Sr, 98Y and 98Y isomer, excitation energy of the 2.36-s isomer in 98Y by using JYFLTRAP Penning trap at Jyvaskyla accelerator facility, . 98Y, 98Zr; deduced levels, J, π, multipolarities, mixing ratios, β feedings, logft, configurations. Comparison of negative-parity levels in 98Y with Interacting Boson Fermion Fermion Model (IBFFM) and Quasi-Particle Rotor Model (QPRM) calculations.

doi: 10.1103/PhysRevC.96.044333
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2017WI15      Phys.Rev. C 96, 064301 (2017)

J.Wisniewski, W.Urban, T.Rzaca-Urban, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene

Parity-doublet structure in the 14757La90 nucleus

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγγ-coin, γγ(θ) using Gammasphere array at ANL. 147La; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, parity-doublet structures, alignments, configurations, B(E1)/B(E2) ratios, intrinsic electric dipole moment D0, octupole correlations, Systematics of 3/2+, 5/2+, 7/2+, 3/2-, 7/2- and 11/2- levels in 139,141,143,145,147,149La.

doi: 10.1103/PhysRevC.96.064301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2016HO13      Phys.Rev. C 94, 021303 (2016)

S.S.Hota, S.K.Tandel, P.Chowdhury, I.Ahmad, M.P.Carpenter, C.J.Chiara, J.P.Greene, C.R.Hoffman, E.G.Jackson, R.V.F.Janssens, B.P.Kay, T.L.Khoo, F.G.Kondev, S.Lakshmi, S.Lalkovski, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, D.Peterson, U.Shirwadkar, D.Seweryniak, I.Stefanescu, Y.Toh, S.Zhu

Population and decay of a Kπ = 8- two-quasineutron isomer in 244Pu

NUCLEAR REACTIONS 244Pu(208Pb, 208Pb'), E=1430 MeV; 244Pu(47Ti, 47TI'), E=305 MeV; measured Eγ, Iγ, γγ-coin, M1/E2 branching ratios, prompt and off-beam γ rays, half-life of a 2-qp 8- isomer using Gammasphere array at ATLAS-ANL. 244Pu; deduced high-spin levels, J, π, rotational bands, multipolarity, configurations, kinematic and dynamic moments of inertia, (gk-gR)/Q0, reduced hindrance factors for transitions from the isomer. Comparison with multi-qp calculations using Woods-Saxon potential and Lipkin-Nogami pairing. Systematics of moment of inertia plots and 8- isomers for 244Pu, 250Fm and 252No.

doi: 10.1103/PhysRevC.94.021303
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2016UR01      Phys.Rev. C 93, 034326 (2016)

W.Urban, K.Sieja, T.Rzaca-Urban, M.Czerwinski, H.Naidja, F.Nowacki, A.G.Smith, I.Ahmad

First evidence of γ collectivity close to the doubly magic core 132Sn

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 array. 138Te, 140Xe; deduced high-spin levels, J, π, bands, multipolarities, mixing ratios, configurations. Comparison with shell-model calculations. Systematics of negative- and positive-parity levels in N=86 isotones 136Sn, 138Te, 140Xe, 142Ba, 144Ce, 146Nd, 148Sm, 150Gd. 106,108Ru; observed γ rays.

NUCLEAR STRUCTURE 138Te, 140Xe; calculated levels, J, π, B(E2), quadrupole moments, deformation parameter β using shell model.

doi: 10.1103/PhysRevC.93.034326
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2015AH03      Phys.Rev. C 91, 044310 (2015)

I.Ahmad, J.P.Greene, F.G.Kondev, S.Zhu

High-resolution α and electron spectroscopy of 98249Cf

RADIOACTIVITY 249Cf(α); measured Eα, Iα, E(ce), I(ce), Eg, Iγ, αγ-, γγ-coin using Argonne double-focusing magnetic spectrometer, planar silicon (PIPS) detector, cooled Si(Li) spectrometer, and LEPS detector. 245Cm; deduced levels, J, π, conversion coefficients for K and higher shells, multipolarity, alpha branching ratios and hindrance factors, bands, configurations, anomalous E1 conversion coefficients. Systematics of anomalous E1 conversion coefficients for E1 transitions in 227Ac, 231,233Pa, 237Np, 239Pu, 243Am, 245Cm.

doi: 10.1103/PhysRevC.91.044310
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2015AH04      Phys.Rev. C 92, 024313 (2015)

I.Ahmad, R.R.Chasman, J.P.Greene, F.G.Kondev, S.Zhu

Electron capture decay of 58-min 22992U and levels in 22991Pa

RADIOACTIVITY 229U(EC)[from 229Th(α, 4n) and 230Th(3He, 4n)]; measured Eγ, Iγ, E(x ray), I(x ray), E(ce), I(ce), γ(x ray)-, γγ-coin, half-life of 229U ground state. 229Pa; deduced levels, J, π, conversion coefficients, multipolarity, EC feedings, logft, Nilsson configurations. Discussed splitting of 5/2+ and 5/2- doublet and signature of octupole deformation. Comparison with shell-model calculations of level structure in 229,231Pa. 225Th, 221Ra(α)[from 229U -> 225Th α decay chain]; measured Eγ, Iγ, E(ce), I(ce). 217Rn, 221Ra; deduced levels, conversion coefficients, multipolarity.

doi: 10.1103/PhysRevC.92.024313
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2015CH57      Phys.Rev. C 92, 044330 (2015)

J.Chen, F.G.Kondev, I.Ahmad, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, S.Zhu, D.Ehst, V.Makarashvili, D.Rotsch, N.A.Smith

Precise absolute γ-ray and β--decay branching intensities in the decay of 6729Cu

RADIOACTIVITY 67Cu(β-)[from 68Zn(γ, p), E=36 MeV at Argonne Low Energy Accelerator Facility]; measured Eγ, Iγ, Eβ, Iβ, ce, βγ-coin, half-life of isomer in 67Zn, Q(β-) from Fermi-Kurie plots. 67Zn; deduced levels, γ-ray emission probabilities, β-decay branching ratios. Monte Carlo simulations of electron detector efficiency as a function of the β- particle energy using MCNPX code. Comparison with previous experimental values, and with evaluated data.

doi: 10.1103/PhysRevC.92.044330
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2015DA12      Phys.Rev.Lett. 115, 132502 (2015)

H.M.David, J.Chen, D.Seweryniak, F.G.Kondev, J.M.Gates, K.E.Gregorich, I.Ahmad, M.Albers, M.Alcorta, B.B.Back, B.Baartman, P.F.Bertone, L.A.Bernstein, C.M.Campbell, M.P.Carpenter, C.J.Chiara, R.M.Clark, M.Cromaz, D.T.Doherty, G.D.Dracoulis, N.E.Esker, P.Fallon, O.R.Gothe, J.P.Greene, P.T.Greenlees, D.J.Hartley, K.Hauschild, C.R.Hoffman, S.S.Hota, R.V.F.Janssens, T.L.Khoo, J.Konki, J.T.Kwarsick, T.Lauritsen, A.O.Macchiavelli, P.R.Mudder, C.Nair, Y.Qiu, J.Rissanen, A.M.Rogers, P.Ruotsalainen, G.Savard, S.Stolze, A.Wiens, S.Zhu

Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in 254Rf

NUCLEAR REACTIONS 206Pb(50Ti, 2n)254Rf, E=242.5 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced energy levels, J, π, isomer T1/2, unprecedented fission hindrance relative to the ground state. Comparison with multiquasiparticle calculations.

doi: 10.1103/PhysRevLett.115.132502
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2015KO05      Phys.Rev. C 91, 027303 (2015)

A.Korgul, P.Baczyk, W.Urban, T.Rzaca-Urban, A.G.Smith, I.Ahmad

Investigation of the i13/2 neutron orbital in the 132Sn region: New excited levels in 135Sb

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 detector array. 135Sb; deduced high-spin levels, J, π, multipolarity, configuration. 132Sn; deduced energy of the i13/2 neutron single-particle orbital. Comparison with shell-model calculations using OXBASH code. Systematics of 3- states in N=82 and 13/2+ states in N=83, Sn, Te, Xe, Ba, Ce, Nd and Sm nuclei.

doi: 10.1103/PhysRevC.91.027303
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2014CH47      Phys.Rev. C 90, 044302 (2014)

J.Chen, I.Ahmad, J.P.Greene, F.G.Kondev

Precise measurements of the 24997Bk ground state half-life and the β- decay end-point energy

RADIOACTIVITY 249Bk(β-), (α); measured Eγ, Iγ, Eβ, Iβ, half-life of 249Bk ground state; deduced end-point energy, Q(β-), mass excess of 249Bk. Comparison with other experimental results and AME-12 evaluation.

doi: 10.1103/PhysRevC.90.044302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2014GA01      Hyperfine Interactions 223, 201 (2014)

A.Garcia, S.Sjue, E.Swanson, C.Wrede, D.Melconian, A.Algora, I.Ahmad

Decay studies for neutrino physics

RADIOACTIVITY 100Tc, 116In(β-); measured decay products, Eβ, Iβ, X-rays; deduced branching ratios. Comparison with available data.

doi: 10.1007/s10751-012-0619-2
Citations: PlumX Metrics


2014HO03      Chin.Phys.C 38, 024103 (2014)

I.Hossain, H.Y.Abdullah, I.M.Ahmad, M.A.Saeed

B(E2) value of even-even 108-112Pd isotopes by interacting boson model-1

NUCLEAR STRUCTURE 108,110,112Pd; calculated B(E2), quadrupole moments and deformation parameters. IBM-1 model, comparison with experimental data.

doi: 10.1088/1674-1137/38/2/024103
Citations: PlumX Metrics


2014HO16      Phys.Lett. B 739, 13 (2014)

S.S.Hota, P.Chowdhury, T.L.Khoo, M.P.Carpenter, R.V.F.Janssens, Y.Qiu, I.Ahmad, J.P.Greene, S.K.Tandel, D.Seweryniak, S.Zhu, P.F.Bertone, C.J.Chiara, A.Y.Deo, N.D'Olympia, S.Gros, C.J.Guess, T.Harrington, D.J.Hartley, G.Henning, C.R.Hoffman, E.G.Jacksona, F.G.Kondev, S.Lakshmi, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, C.Nair, D.Peterson, U.Shirwadkar, I.Stefanescu

N=151 Pu, Cm and Cf nuclei under rotational stress: Role of higher-order deformations

NUCLEAR REACTIONS 244Pu, 249Cf(208Pb, X)242Pu/243Pu/244Pu/245Pu/246Pu/248Cf/249Cf/250Cf, 248Cm(209Bi, X)246Cm/247Cm/248Cm/249Cm/250Cm, E not given; measured reaction products, Eγ, Iγ. 245Pu, 247Cm, 249Cf; deduced energy levels, J, π, rotational bands, high-spins, deformations. Comparison with available data, Cranked WS model.

doi: 10.1016/j.physletb.2014.10.021
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2014KU28      Phys.Rev. C 90, 064315 (2014)

J.Kurpeta, W.Urban, A.Plochocki, T.Rzaca-Urban, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene, A.Jokinen, H.Penttila

Neutron configurations in 113Pd

RADIOACTIVITY 248Cm, 252Cf(SF); measured prompt Eγ, Iγ, γγ-coin using EOROGAM-II array at Jyvaskyla and Gammasphere array at ANL. 113Pd; deduced levels, J, π, bands configuration, staggering, alignments Comparison with band structures of 109Mo, 109,112,113Pd, 110,111Ru. Discussed possible oblate-shape of low-energy bandheads. 113Rh(β-)[from 238U(p, X), E=25 MeV using IGISOL at Jyvaskyla, followed by mass separation]; measured Eγ, Iγ, Eβ, βγ-, γγ-coin. 113Pd; deduced levels, J, π, logft, configurations, B(GT) strengths and comparison with those from 113Ru to 113Rh decay.

doi: 10.1103/PhysRevC.90.064315
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2013AH03      Phys.Rev. C 87, 054328 (2013)

I.Ahmad, J.P.Greene, F.G.Kondev, S.Zhu, M.P.Carpenter, R.V.F.Janssens, R.A.Boll, J.G.Ezold, S.M.Van Cleve, E.Browne

α decay of 97249Bk and levels in 95245Am

RADIOACTIVITY 249Bk(α); measured Eγ, Iγ, Eα, Iα, γα-, γγ-coin, absolute Iγ of 327.45-keV γ ray. Alpha spectra measured using Argonne double-focusing magnetic spectrometer. 249Cf(α)[from 249Bk β- decay]; measured Eα, Eγ. 245Am; deduced levels, J, π, bands, Nilsson configurations, strong Coriolis mixing, hindrance factors. Comparison with previous experimental results. Systematics of low-lying levels in 239,241,243,245Am.

doi: 10.1103/PhysRevC.87.054328
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2013CZ02      Phys.Rev. C 88, 044314 (2013)

M.Czerwinski, T.Rzaca-Urban, K.Sieja, H.Sliwinska, W.Urban, A.G.Smith, J.F.Smith, G.S.Simpson, I.Ahmad, J.P.Greene, T.Materna

Yrast excitations in the neutron-rich N=52 isotones

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array at ANL. 88Kr; deduced levels, J, π, mixing ratio, multipolarity. 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array for 252Cf, and Eurogam2 array in a previous experiment for 248Cm. 86Se; deduced levels, J, π. 160Sm, 162Gd; observed γ rays from γγ-coin with complementary fission fragments. Comparison with shell-model calculations, and systematics of N=52 even-even nuclei.

NUCLEAR STRUCTURE 82Zn, 84Ge, 86Se, 88Kr, 90Sr, 94Mo, 96Ru; calculated levels, J, π using shell model. Systematics of yrast states up to 8+ of even-even N=52 Ge, Se, Kr, Sr, Zr, Mo and Ru nuclei. 82Zn; predicted energies of first 2+ and 4+ states from systematics. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.044314
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2013RZ01      Phys.Rev. C 87, 031305 (2013)

T.Rzaca-Urban, W.Urban, A.G.Smith, I.Ahmad, A.Syntfeld-Kazuch

Unexpected 5/2- spin of the ground state in 147Ba: No octupole deformation in ground states of odd-A Ba isotopes

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 array. 147Ba; deduced levels, J, π, bands, multipolarity, alignments. Discussed parity doublets and octupole bands.

doi: 10.1103/PhysRevC.87.031305
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2013RZ02      Phys.Rev. C 88, 034302 (2013)

T.Rzaca-Urban, M.Czerwinski, W.Urban, A.G.Smith, I.Ahmad, F.Nowacki, K.Sieja

First observation of excited states in 87Se: Collectivity and j- 1 anomaly at N=53

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin with γ rays from complementary fragments, γγ(θ) using Eurogam2 array; deduced mass correlations. 87Se; deduced levels, J, π, multipolarity, configuration, coexistence of collective and single-particle excitations. Comparison with shell model calculations, and with structure of N=53 neighbors. 86,88Se, 146,148Ce, 156,158,160Sm; observed γ rays.

NUCLEAR STRUCTURE 85Ge, 87Se, 89Kr, 91Sr, 93Zr, 95Mo, 97Ru; calculated levels, J, π, yrast states of N=53 isotones, B(E2), B(M1); discussed j-1 anomaly. Large-scale shell model calculations.

doi: 10.1103/PhysRevC.88.034302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2013WR01      Phys.Rev. C 87, 031303 (2013)

C.Wrede, S.K.L.Sjue, A.Garcia, H.E.Swanson, I.Ahmad, A.Algora, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, M.Reponen, J.Rissanen, A.Saastamoinen, J.Aysto

Electron capture on 116In and implications for nuclear structure related to double-β decay

RADIOACTIVITY 116In(EC)[from 115In(d, p), E=7.6 MeV]; measured γ, β, x-ray spectra, β(x ray)-coin using JYFLTRAP at IGISOL facility in Jyvaskyla; deduced EC decay branch, B(GT). Implications for 2νββ and 0νββ decay modes of 116Cd.

doi: 10.1103/PhysRevC.87.031303
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012KO07      Phys.Rev. C 85, 027304 (2012)

F.G.Kondev, S.Zhu, M.P.Carpenter, R.V.F.Janssens, I.Ahmad, C.J.Chiara, J.P.Greene, T.Lauritsen, D.Seweryniak, S.Lalkovski, P.Chowdhury

M3 and E4 K-forbidden decays of the Kπ=23/2- isomer in 177Lu

RADIOACTIVITY 177mLu(IT), (β-)[from 176Lu(n, γ), E=thermal]; measured Eγ, Iγ, γγ-coin using Gammasphere array. 177Lu, 177Hf; deduced levels, J, π, bands, B(E3), B(M3), B(E4), B(M4), B(E5), hindrance factors, configurations.

doi: 10.1103/PhysRevC.85.027304
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012KO23      Appl.Radiat.Isot. 70, 1867 (2012)

F.G.Kondev, I.Ahmad, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, T.Lauritsen, D.Seweryniak, S.Zhu, S.P.Lalkovski, P.Chowdhury

Gamma-ray emission probabilities in the decay of 177mLu

RADIOACTIVITY 177mLu(IT), (β-); measured decay products, Eγ, Iγ; deduced relative and absolute γ-ray emission probabilities. Comparison with available data.

doi: 10.1016/j.apradiso.2012.02.029
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012KU06      Phys.Rev. C 85, 027302 (2012)

J.Kurpeta, W.Urban, T.Materna, H.Faust, U.Koster, J.Rissanen, T.Rzaca-Urban, C.Mazzocchi, A.G.Smith, J.F.Smith, J.P.Greene, I.Ahmad

Low-spin structure of 85Se and the βn branching of 85As

RADIOACTIVITY 85As(β-)[from 235U(n, F)]; measured Eγ, Iγ, βγ-, γγ-coin. 85Se; deduced levels, J, π, configuration. 85As(β-n); discussed delayed neutron decay branch.

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin for prompt γ rays. 85Se; deduced levels, J, π. Eurogam2 and Gammasphere arrays.

doi: 10.1103/PhysRevC.85.027302
Citations: PlumX Metrics


2012MA03      Acta Phys.Pol. B43, 247 (2012)

T.Malkiewicz, G.S.Simpson, W.Urban, J.Genevey, J.A.Pinston, I.Ahmad, J.P.Greene, U.Koster, T.Materna, M.Ramdhane, T.Rzaca-Urban, A.G.Smith, G.Thiamova

Recent Studies of Odd-A, Neutron-rich Pr Isotopes

NUCLEAR REACTIONS 241Am(n, F)151Pr, E=thermal; measured reaction products, Eγ, Iγ; deduced level energies, J, π, E1 multipolarity transition. Comparison with QPRM calculations.

doi: 10.5506/APhysPolB.43.247
Citations: PlumX Metrics


2012MA13      Phys.Rev. C 85, 044314 (2012)

T.Malkiewicz, G.S.Simpson, W.Urban, J.Genevey, U.Koster, T.Materna, J.A.Pinston, M.Ramdhane, T.Rzaca-Urban, G.Thiamova, A.G.Smith, I.Ahmad, J.P.Greene

Near-yrast structure of odd-A, neutron-rich Pr isotopes

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), using EUROGAM-II, and Gammasphere arrays. 151,153Pr; deduced high-spin levels, J, π, multipolarity, rotational bands, alignments, configurations, mass correlation plots. Comparison with reflection-symmetric quasi-particle-rotor model (QPRM) calculations. 93Rb, 99Y, 99,101Zr, 107Tc, 148Ce; measured Eγ, γγ-coin.

NUCLEAR REACTIONS 241Am(n, F), E=thermal; measured Eγ, Iγ, ce, (fragment)γ-coin, delayed γ, ce, half-lives. 151Pr; deduced levels, J, π, conversion coefficients, multipolarities, bands, Nilsson configurations. Comparison with QRPM calculations.

NUCLEAR STRUCTURE 151,153Pr; calculated levels, J, π, rotational bands. Quasi-particle-rotor model using computer codes GAMPN, ASYRMO, and PROBAMO.

doi: 10.1103/PhysRevC.85.044314
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012RZ01      Phys.Rev. C 86, 044324 (2012)

T.Rzaca-Urban, W.Urban, J.A.Pinston, G.S.Simpson, A.G.Smith, I.Ahmad

Reflection symmetry of the near-yrast excitations in 145Ba

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 array. 145Ba; deduced high-spin levels, J, π, conversion coefficients, multipolarity, mixing ratios, bands, alignments. Systematics of yrast levels in N=89 isotones 143Xe, 145Ba, 147Ce, 149Nd and 151Sm. Comparison of level energies with quasiparticle-rotor model calculations. No evidence of octupole deformation in the ground state.

doi: 10.1103/PhysRevC.86.044324
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012SM02      Phys.Rev. C 86, 014321 (2012)

A.G.Smith, J.L.Durell, W.R.Phillips, W.Urban, P.Sarriguren, I.Ahmad

Lifetime measurements and nuclear deformation in the A ≈ 100 region

RADIOACTIVITY 248Cm(SF); measured Eγ, γγ-coin, level half-lives by Doppler broadended line shape analysis using EUROGAM-2 array. 96,97,98,100Sr, 98,99,100,101,102,104Zr, 103Nb, 102,103,104,105,106,107,108Mo, 108,109,110,111,112Ru, 114,116Pd; deduced levels, J, π, transition quadrupole moments. Onset of deformation at N AP 60 in Sr and Zr isotopes. Comparison with several theoretical calculations in the context of prolate-oblate shape competition.

doi: 10.1103/PhysRevC.86.014321
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012UR01      Phys.Rev. C 85, 014329 (2012)

W.Urban, K.Sieja, G.S.Simpson, T.Soldner, T.Rzaca-Urban, A.Zlomaniec, I.Tsekhanovich, J.A.Dare, A.G.Smith, J.L.Durell, J.F.Smith, R.Orlandi, A.Scherillo, I.Ahmad, J.P.Greene, J.Jolie, A.Linneman

Isomeric levels in 92Rb and the structure of neutron-rich 92, 94Rb isotopes

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives by γ(t), delayed and prompt γ. 92,94Rb; deduced levels, J, π, isomers, multipolarity, configuration, B(E1). EUROGAM2 and the GAMMASPHERE arrays. Comparison with large-scale shell-model calculations.

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured fission fragment spectra, Eγ, mass spectra, γ(fission fragment)-coin. 92Rb; deduced level, isomer.

NUCLEAR STRUCTURE 92,94Rb; calculated levels, J, π. Large scale shell-model. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.014329
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012UR04      Phys.Rev. C 86, 017301 (2012)

W.Urban, T.Rzaca-Urban, A.Syntfeld-Kazuch, A.G.Smith, I.Ahmad

Band structure of 149Ce

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin using EUROGAM2 array; deduced internal conversion coefficients, transition intensities of unobserved transitions. 149Ce; deduced levels, J, π, multipolarity, bands, configurations, B(E1)/B(E2), dipole moment D0, staggering in bands, alignments. No evidence found for parity doublets. Comparison with band structures and staggering in 153Sm, 155Gd.

doi: 10.1103/PhysRevC.86.017301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2012WA16      Phys.Rev. C 85, 057302 (2012)

J.C.Walpe, U.Garg, S.Naguleswaran, J.Wei, W.Reviol, I.Ahmad, M.P.Carpenter, T.L.Khoo

Lifetime measurements in 182, 186Pt

NUCLEAR REACTIONS 154Sm(36S, 4n)186Pt, E=167 MeV; 122Sn(64Ni, 4n)182Pt, E=295 MeV; measured Eγ, Iγ, half-lives of levels in ground-state band by recoil distance Doppler-shift (RDDS) method. 182,186Pt; deduced levels, B(E2), transition quadrupole moments. Comparison with band-mixing calculations.

doi: 10.1103/PhysRevC.85.057302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2011KO32      Nucl.Instrum.Methods Phys.Res. A652, 654 (2011)

F.G.Kondev, I.Ahmad, J.P.Greene, A.L.Nichols, M.A.Kellett

Measurements of absolute gamma-ray emission probabilities in the decay of 233Pa

RADIOACTIVITY 233Pa(β-) [from 237Nb(α)]; measured decay products, Eγ, Iγ, Eα, Iα; deduced γ-emission probabilities. Comparison with experimental data.

doi: 10.1016/j.nima.2011.01.147
Citations: PlumX Metrics


2011RO20      Phys.Rev. C 83, 064311 (2011)

A.P.Robinson, T.L.Khoo, D.Seweryniak, I.Ahmad, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, J.Greene, P.T.Greenlees, K.Hauschild, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, D.G.Jenkins, G.D.Jones, S.Ketelhut, F.G.Kondev, T.Lauritsen, C.J.Lister, A.Lopez-Martens, P.Marley, E.McCutchan, P.Papadakis, D.Peterson, J.Qian, D.Rostron, U.Shirwadkar, I.Stefanescu, S.K.Tandel, X.Wang, S.Zhu

Search for a 2-quasiparticle high-K isomer in 256Rf

NUCLEAR STRUCTURE 256Rf; calculated ground state and rotational band energies, configurations using Woods-Saxon Potential.

NUCLEAR REACTIONS 208Pb(50Ti, 2n), E=240 MeV; measured Eγ, Iγ, ce, γγ-, γ(ce)-coin, γ(t), half-life. 256Rf; deduced levels, J, π, isomers, configurations; calculated energies of two-quasiparticle high-K isomers with the universal Woods-Saxon energies. 170Er(50Ti, 4n)216Th, E=222 MeV; measured Eγ, ce, γ(ce)-coin from isomer, half-life, isomer ratio; used as a test case.

doi: 10.1103/PhysRevC.83.064311
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2011RZ01      Phys.Rev. C 83, 067301 (2011)

T.Rzaca-Urban, W.Urban, J.A.Pinston, A.G.Smith, I.Ahmad

Near-yrast, medium-spin structure of 143Xe

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), using EUROGAM-2 array. 143Xe; deduced levels, J, π, conversion coefficients, multipolarity, bands, configurations. Comparison with quasiparticle-rotor model calculations with a reflection-symmetric potential. Systematics of bandheads of N=89 nuclei.

doi: 10.1103/PhysRevC.83.067301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2011ZH56      Nucl.Instrum.Methods Phys.Res. A652, 231 (2011)

S.Zhu, F.G.Kondev, M.P.Carpenter, I.Ahmad, C.J.Chiara, J.P.Greene, G.Gurdal, R.V.F.Janssens, S.Lalkovski, T.Lauritsen, D.Seweryniak

γ-ray coincidence and fast-timing measurements using LaBr3(Ce) detectors and gammasphere

RADIOACTIVITY 177Lu(IT); measured decay products, Eγ, Iγ; deduced γ-ray energies, J, π, T1/2.

doi: 10.1016/j.nima.2010.10.059
Citations: PlumX Metrics


2010HO15      Nucl.Phys. A844, 53c (2010)

R.J.Holt, I.Ahmad, K.Bailey, B.Graner, J.P.Greene, W.Korsch, Z.-T.Lu, P.Mueller, T.P.O'Connor, I.A.Sulai, W.L.Trimble

Progress toward an EDM measurement in 225Ra

doi: 10.1016/j.nuclphysa.2010.05.013
Citations: PlumX Metrics


2010HU02      Phys.Rev. C 81, 014312 (2010)

A.M.Hurst, C.Y.Wu, M.A.Stoyer, D.Cline, A.B.Hayes, S.Zhu, M.P.Carpenter, K.Abu Saleem, I.Ahmad, J.A.Becker, C.J.Chiara, J.P.Greene, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, C.J.Lister, G.Mukherjee, S.V.Rigby, D.Seweryniak, I.Stefanescu

Rotational alignments in 235Np and the possible role of j15/2 neutrons

NUCLEAR REACTIONS 237Np(116Sn, 118Sn)235Np, E=801 MeV; measured Eγ, Iγ, γγ-, (particle)γ-, (fragment)( fragment)γ-coin, and angular distribution of γ-ray yields for 116Sn, 117Sn and 118Sn using the Gammasphere and CHICO arrays. 235Np; deduced levels, J, π, bands, angular momentum, moment of inertia as functions of rotational frequency, configurations. 116,117,118Sn; measured Eγ, γγ-coin. Comparison with cranked shell-model calculations and with alignment plots for 237Np and 241Am.

doi: 10.1103/PhysRevC.81.014312
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010KE05      Phys.Lett. B 692, 297 (2010)

G.Kessedjian, B.Jurado, M.Aiche, G.Barreau, A.Bidaud, S.Czajkowski, D.Dassie, B.Haas, L.Mathieu, L.Audouin, N.Capellan, L.Tassan-Got, J.N.Wilson, E.Berthoumieux, F.Gunsing, Ch.Theisen, O.Serot, E.Bauge, I.Ahmad, J.P.Greene, R.V.F.Janssens

Neutron-induced fission cross sections of short-lived actinides with the surrogate reaction method

NUCLEAR REACTIONS 243Am(3He, d), (3He, t), (3He, α), E=24, 30 MeV; 242,243Cm, 241Am(n, F), E<10 MeV; measured surrogate reaction products; deduced fission σ. Comparison with experimental data, JENDL-3.3, ENDF/B-VII.0 and JEFF-3.1 libraries.

doi: 10.1016/j.physletb.2010.07.048
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23076.


2010KO27      Appl.Radiat.Isot. 68, 2382 (2010)

F.G.Kondev, I.Ahmad, J.P.Greene, M.A.Kellett, A.L.Nichols

Measurements of X- and γ-ray emission probabilities in the β- decay of 233Pa

RADIOACTIVITY 233Pa(β-) [from 237Np(α)]; measured Eγ, γ; deduced emission probabilities for x-rays and γ-ray transitions.

doi: 10.1016/j.apradiso.2010.06.009
Citations: PlumX Metrics


2010MA53      Nucl.Phys. A839, 42 (2010)

J.H.Madani, I.Ahmad, M.A.Alvi

Microscopic study of deuteron-nucleus total reaction cross section at medium energies

NUCLEAR REACTIONS 12C, 16O, 28Si, 40,48Ca, 58,60Ni, 112,116,120,124Sn, 208Pb(d, X), E=37.9, 65.5, 97.4 MeV; calculated σ using the Glauber model. Comparison with data.

doi: 10.1016/j.nuclphysa.2010.03.010
Citations: PlumX Metrics


2010MU13      Phys.Rev. C 82, 054316 (2010)

G.Mukherjee, P.Chowdhury, F.G.Kondev, P.M.Walker, G.D.Dracoulis, R.D'Alarcao, I.Shestakova, K.Abu Saleem, I.Ahmad, M.P.Carpenter, A.Heinz, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, I.Wiedenhoever, D.M.Cullen, C.Wheldon, D.L.Balabanski, M.Danchev, T.M.Goon, D.J.Hartley, L.L.Riedinger, O.Zeidan, M.A.Riley, R.A.Kaye, G.Sletten

K-hindered decay of a six-quasiparticle isomer in 176Hf

NUCLEAR REACTIONS 130Te(48Ca, 2n), E=194 MeV; measured Eγ, Iγ, γγ-coin, half-lives using Gammasphere array. Beam-on, beam-off measurements of γ spectra. 176Hf; deduced levels, J, π, rotational bands, isomers, multipolarity, configurations, reduced hindrance factors for K-isomers.

doi: 10.1103/PhysRevC.82.054316
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010RZ01      Phys.Rev. C 82, 017301 (2010)

T.Rzaca-Urban, W.Urban, J.A.Pinston, G.S.Simpson, J.L.Durell, A.G.Smith, I.Ahmad

Medium-spin structure of 145Cs

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 array. 145Cs; deduced levels, J, π, multipolarities, bands, configurations, electric dipole moment D0. 101,102Nb; measured Eγ. Comparison with quasiparticle-rotor model calculations. Z=54-64, N=84-92; systematics of D0 parameter for even nuclei of even neutron number.

doi: 10.1103/PhysRevC.82.017301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010RZ02      Phys.Rev. C 82, 067304 (2010)

T.Rzaca-Urban, W.Urban, J.A.Pinston, G.S.Simpson, A.G.Smith, J.F.Smith, I.Ahmad

Near-yrast structure of 149Pr

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, conversion coefficients, and half-life of isomer using EUROGAM2 and Gammasphere arrays. 149Pr; deduced levels, J, π, band, multipolarity, B(E1), electric dipole moment, configuration. Comparison with quasiparticle-rotor model calculations. 98,99,100,101Y; measured Eγ, γγ-coin.

doi: 10.1103/PhysRevC.82.067304
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010SE10      Nucl.Phys. A834, 357c (2010)

D.Seweryniak, T.L.Khoo, I.Ahmad, F.G.Kondev, A.Robinson, S.K.Tandel, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, S.Eeckhaudt, J.P.Greene, P.T.Greenlees, S.Gros, K.Hauschild, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, D.G.Jenkins, G.D.Jones, S.Ketelhut, T.Lauritsen, C.J.Lister, A.Lopez-Martens, P.Marley, E.A.McCutchan, T.Nakatsukasa, P.Papadakis, D.Peterson, J.Qian, D.Rostron, I.Stefanescu, U.S.Tandel, X.F.Wang, S.F.Zhu

Bridging the nuclear structure gap between stable and super heavy nuclei

NUCLEAR STRUCTURE 249Bk; calculated single-proton energies using different interactions; 252,254No, 256,257Rf; deduced configurations. Comparison with data.

doi: 10.1016/j.nuclphysa.2010.01.039
Citations: PlumX Metrics


2010SI03      Phys.Rev. C 81, 024313 (2010)

G.S.Simpson, W.Urban, J.A.Pinston, J.C.Angelique, I.Deloncle, H.R.Faust, J.Genevey, U.Koster, T.Materna, R.Orlandi, A.Scherillo, A.G.Smith, J.F.Smith, T.Rzaca-Urban, I.Ahmad, J.P.Greene

Near-yrast structure of N=93 neutron-rich lanthanide nuclei

NUCLEAR REACTIONS 239Pu(n, F), 241Am(n, F), E=thermal; measured Eγ, Iγ, ce, γγ-, (x ray)γ-, (ce)γ-, (fragment)γ-coin, delayed γ, and half-lives. 153Nd, 155Sm; deduced levels, J, π, conversion coefficients, multipolarities, bands, Nilsson configurations. Comparison with quasiparticle-rotor-model (QPRM) calculations.

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, and half-lives using Gammasphere and Eurogam-II arrays. 151Ce, 153Nd; deduced levels, J, π, bands, and configurations. Comparison with quasiparticle-rotor-model (QPRM) calculations. 151Ce, 153Nd, 155Sm, 157Gd, 159Dy; systematics of bandheads.

doi: 10.1103/PhysRevC.81.024313
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010SI17      Phys.Rev. C 82, 024302 (2010)

G.S.Simpson, W.Urban, K.Sieja, J.A.Dare, J.Jolie, A.Linneman, R.Orlandi, A.Scherillo, A.G.Smith, T.Soldner, I.Tsekhanovich, B.J.Varley, A.Zlomaniec, J.L.Durell, J.F.Smith, T.Rzaca-Urban, H.Faust, I.Ahmad, J.P.Greene

Near-yrast, medium-spin, excited states of 91Rb, 93Rb, and 95Rb

NUCLEAR REACTIONS 235U(n, F)93Rb/95Rb; measured Eγ, Iγ, γγ-, (fragment)γ-coin, and half-lives using FIFI fragment identification system and Ge detector array. 93,95Rb; deduced levels, J, π, isomers, transition probabilities, and configurations. Comparison with shell-model calculations.

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), and half-lives using EUROGAM-II and Gammasphere arrays. 91,93,95Rb; deduced levels, J, π, isomers, transition probabilities, and configurations. Comparison with shell-model calculations. Systematics of low-lying levels in 89,91,93,95Rb. 93Rb, 95Y; comparison of experimental and calculated spectra.

doi: 10.1103/PhysRevC.82.024302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010TA05      Phys.Rev. C 81, 045809 (2010)

X.D.Tang, K.E.Rehm, I.Ahmad, C.R.Brune, A.Champagne, J.P.Greene, A.Hecht, D.J.Henderson, R.V.F.Janssens, C.L.Jiang, L.Jisonna, D.Kahl, E.F.Moore, M.Notani, R.C.Pardo, N.Patel, M.Paul, G.Savard, J.P.Schiffer, R.E.Segel, S.Sinha, A.H.Wuosmaa

Determination of the E1 component of the low-energy 12C(α, γ)16O cross section

RADIOACTIVITY 16N(β-α); measured Eα, Iα, α12C-coin, half-life; deduced E1 component of the S factor for 12C(α, γ)16O reaction using a set of twin ionization chambers. R-matrix analysis. Comparison with previous studies.

NUCLEAR REACTIONS 2H(15N, p)15N/16N/16O/20Ne, E=82 MeV; measured fragment yields.

doi: 10.1103/PhysRevC.81.045809
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1799.


2010TA22      Phys.Rev. C 82, 041301 (2010)

S.K.Tandel, P.Chowdhury, S.Lakshmi, U.S.Tandel, I.Ahmad, M.P.Carpenter, S.Gros, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, J.P.Greene, D.J.Hartley, T.Lauritsen, C.J.Lister, D.Peterson, A.Robinson, D.Seweryniak, S.Zhu

Rotational bands in odd-A Cm and Cf isotopes: Exploring the highest neutron orbitals

NUCLEAR REACTIONS 248Cm(209Bi, 210Bi)247Cm, E=1450 MeV; 250Cm(209Bi, 208Bi)249Cm, E=1450 MeV; 249Cf(207Pb, 207Pb'), E=1430 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array. 247,249Cm, 249Cf; deduced levels, J, π, (gK-gR)/Q0, alignments, Nilsson configurations, and rotational bands. 197Au, 207Pb, 208Bi, 210Bi; measured Eγ. Systematics of alignments for 244Pu, 246Cm, 248Cf, 250Fm and 252No, Comparison with Woods-Saxon cranking calculations.

doi: 10.1103/PhysRevC.82.041301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010UR03      Phys.Rev. C 82, 064308 (2010)

W.Urban, J.A.Pinston, T.Rzaca-Urban, J.Kurpeta, A.G.Smith, I.Ahmad

Near-yrast, medium-spin structure of the 109Tc nucleus

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using EUROGAM2 array. 109Tc; deduced levels, J, π, conversion coefficients, multipolarities, rotational bands. 110Tc, 135,136,137I; measured Eγ. Comparison with level systematics of 103,105,107,109,111Tc. Comparison with quasiparticle-rotor model (QPRM) calculations. Evidence for triaxial nature of 109Tc.

NUCLEAR STRUCTURE 107,109Tc; calculated levels, J, π, rotational bands, and γ-ray branching ratios using quasiparticle-rotor model (QPRM).

doi: 10.1103/PhysRevC.82.064308
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2010ZH09      Phys.Rev. C 81, 041306 (2010)

S.Zhu, M.P.Carpenter, R.V.F.Janssens, S.Frauendorf, I.Ahmad, T.L.Khoo, F.G.Kondev, T.Lauritsen, C.J.Lister, D.Seweryniak

Possible double-octupole phonon band in 238U

NUCLEAR REACTIONS 238U(207Pb, 207Pb'), E=1400 MeV; measured Eγ, γγ-coin using Gammasphere array, unsafe Coulomb excitation. 238U; deduced levels, J, π, bands, Routhians, double-octupole phonon excitation. Comparison with band structures in 240Pu.

doi: 10.1103/PhysRevC.81.041306
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009AH03      Phys.Rev. C 80, 064315 (2009)

I.Ahmad, R.R.Chasman

Neutron single-particle states above the N=164 subshell in 98251Cf and 96249Cm studied by neutron transfer reactions

NUCLEAR REACTIONS 248Cm(α, 3He), E=98.5 MeV; 250Cf(d, p), E=12 MeV; analyzed 3He and proton spectra and σ(θ) from earlier experiments using DWBA. 249Cm, 251Cf; deduced levels, J, π, and configurations; calculated neutron single-particle energies using Woods-Saxon single-particle potential.

doi: 10.1103/PhysRevC.80.064315
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009AL05      Phys.Rev. C 79, 024604 (2009)

M.A.Alvi, M.R.Arafah, J.H.Madani, I.Ahmad

Microscopic study of neutron elastic scattering from 12C, 40Ca, and 208Pb at intermediate energies

NUCLEAR REACTIONS 12C, 40Ca, 208Pb(n, n), E=65-225 MeV; calculated and analyzed differential cross sections using Glauber multiple scattering model. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.024604
Citations: PlumX Metrics


2009JI08      Phys.Rev. C 80, 044613 (2009)

C.L.Jiang, K.E.Rehm, D.Ackermann, I.Ahmad, J.P.Greene, B.Harss, D.Henderson, W.F.Henning, R.V.F.Janssens, J.Nolen, R.C.Pardo, P.Reiter, J.P.Schiffer, D.Seweryniak, A.Sonzogni, J.Uusitalo, I.Wiedenhover, A.H.Wuosmaa, F.Brumwell, G.McMichael, M.Paul, R.E.Segel

Experimental study of the 56Ni(3He, d)57Cu reaction in inverse kinematics

NUCLEAR REACTIONS 3He(56Ni, d), E=250 MeV; measured Ed, Id, σ, σ(θ). 57Cu; deduced levels, J, π, spectroscopic factors. DWBA analysis. Discussed implications for 56Ni(p, γ)57Cu reaction of astrophysical interest.

doi: 10.1103/PhysRevC.80.044613
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1760. Data from this article have been entered in the XUNDL database. For more information, click here.


2009KO19      Phys.Rev. C 80, 014304 (2009)

F.G.Kondev, G.D.Dracoulis, G.J.Lane, I.Ahmad, A.P.Byrne, M.P.Carpenter, P.Chowdhury, R.V.F.Janssens, T.Kibedi, T.Lauritsen, C.J.Lister, D.Seweryniak, S.K.Tandel, S.Zhu

Multi-quasiparticle isomers in 174Lu

NUCLEAR REACTIONS Lu, 176Lu(136Xe, X), E ≈ 20% above Coulomb barrier; measured Eγ, Iγ, γγ-coin and half-lives. 174Lu; deduced levels, J, π, isomers, conversion coefficients, multipolarity, transition probabilities, configurations, hindrance factors, rotational bands, band alignments and multi-quasiparticle intrinsic states.

doi: 10.1103/PhysRevC.80.014304
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009QI04      Phys.Rev. C 79, 064319 (2009)

J.Qian, A.Heinz, T.L.Khoo, R.V.F.Janssens, D.Peterson, D.Seweryniak, I.Ahmad, M.Asai, B.B.Back, M.P.Carpenter, A.B.Garnsworthy, J.P.Greene, A.A.Hecht, C.L.Jiang, F.G.Kondev, T.Lauritsen, C.J.Lister, A.Robinson, G.Savard, R.Scott, R.Vondrasek, X.Wang, R.Winkler, S.Zhu

Spectroscopy of 257Rf

NUCLEAR REACTIONS 208Pb(50Ti, n), E=233 MeV; measured Eα, Iα, ce, fission events correlated with evaporation residues, Eγ, Iγ, (ce)α-, (ce)γ-coin, isomer half-lives, (evaporation residues)-ce-α-α correlations. 257Rf; deduced levels, J, π, configurations. 257Rf; calculated excitation energies of 1-qp states and rotational bands built on 1-qp and 3-qp bandheads. A=245-257, odd-A Pu, Cm, Cf, Fm, No, Rf; Nilsson orbital systematics.

RADIOACTIVITY 257Rf(α)(EC)(SF), 257mRf(α)(EC), 257Lr(α), 256Rf(SF), 253No(α)(EC); measured Eα, Iα, Eγ, fission events, (ce)α-coin, half-lives, and fission branching ratios. 253No; deduced levels, J, π, α hindrance factors, and configurations.

doi: 10.1103/PhysRevC.79.064319
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009RZ01      Phys.Rev. C 79, 024319 (2009)

T.Rzaca-Urban, K.Sieja, W.Urban, F.Nowacki, J.L.Durell, A.G.Smith, I.Ahmad

(h11/2, g7/2)9- neutron excitation in 92, 94, 96Sr

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin, γ(θ), γ(lin pol). 92,94,96Sr; deduced levels, J, π, multipolarity, bands, configurations. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.79.024319
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009RZ02      Phys.Rev. C 80, 064317 (2009)

T.Rzaca-Urban, J.Genevey, T.Materna, W.Urban, A.G.Smith, J.A.Pinston, G.S.Simpson, M.P.Sadowski, U.Koster, H.Faust, A.Bail, L.Mathieu, O.Serot, F.Michel-Sendis, I.Ahmad

Near-yrast structure of 142Cs and 144Cs

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), γ(t), and isomer half-lives using EUROGAM2 array. 142,144Cs; deduced levels, J, π, bands, isomers and configurations. Comparison with quasiparticle rotor model (QPRM) calculations.

NUCLEAR REACTIONS 235U, 242Am(n, F)137Te/142Cs/144Cs, E=thermal; measured ionic charge distribution of fragments, Eγ, Iγ, ce, γ(ce)-, delayed γ(fragments)-, delayed (ce)(fragments)-coin using LOHENGRIN fragment separator. 142,144Cs; deduced levels and isomer half-lives.

doi: 10.1103/PhysRevC.80.064317
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009SI21      Phys.Rev. C 80, 024304 (2009)

G.S.Simpson, W.Urban, J.Genevey, R.Orlandi, J.A.Pinston, A.Scherillo, A.G.Smith, J.F.Smith, I.Ahmad, J.P.Greene

Two-quasiparticle isomers and bands of 154, 156Nd and 156, 158, 160Sm

NUCLEAR REACTIONS 239Pu(n, X)154Nd, E=thermal; measured Eγ, Iγ, γγ-coin, half-lives. 154Nd; deduced levels, J, π, isomer, bands and configurations. Comparison with QPRM calculations.

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, half-lives. 156Nd, 156,158,160Sm; deduced levels, J, π, isomers, bands and configurations. Comparison with QPRM calculations.

doi: 10.1103/PhysRevC.80.024304
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009UR02      Phys.Rev. C 79, 044304 (2009)

W.Urban, K.Sieja, G.S.Simpson, H.Faust, T.Rzaca-Urban, A.Zlomaniec, M.Lukasiewicz, A.G.Smith, J.L.Durell, J.F.Smith, B.J.Varley, F.Nowacki, I.Ahmad

New isomers and medium-spin structure of the 95Y nucleus

RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives. 95Y; deduced levels, J, π, isomers, configurations. Comparisons with shell-model calculations.

NUCLEAR REACTIONS 238U(n, F), E=thermal; measured Eγ, Iγ, γγ-coin, half-lives. 95Y; deduced levels, J, π, isomers.

doi: 10.1103/PhysRevC.79.044304
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009UR03      Phys.Rev. C 79, 067301 (2009)

W.Urban, J.A.Pinston, T.Rzaca-Urban, E.Wolska, J.Genevey, G.S.Simpson, A.G.Smith, J.L.Durell, B.Varley, I.Ahmad

Mapping neutron levels in the A ∼ 100 region: The ν3/2+ [411] band in 103Zr

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin. 103Zr; deduced levels, J, π, bands. 100,102,104Zr, 142,143,144Ba; measured Eγ. 100,101,102,103,104Zr; deduced mass correlations in fission of 248Cm. 99,101,103Zr; systematics of neutron configurations. Comparison of 103Zr levels with quasiparticle plus rotor model calculations.

doi: 10.1103/PhysRevC.79.067301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009UR04      Phys.Rev. C 80, 037301 (2009)

W.Urban, J.A.Pinston, G.S.Simpson, A.G.Smith, J.F.Smith, T.Rzaca-Urban, I.Ahmad

The 11/2-[505] neutron extruder orbital in 159Sm

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. 159Sm; deduced levels, J, π and half-lives. Systematics of 11/2[505] band in N=87-97 Sm, Gd and Dy nuclei. Comparison with quasiparticle rotor model calculations.

doi: 10.1103/PhysRevC.80.037301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2009WA04      Phys.Rev.Lett. 102, 122501 (2009)

X.Wang, R.V.F.Janssens, M.P.Carpenter, S.Zhu, I.Wiedenhover, U.Garg, S.Frauendorf, T.Nakatsukasa, I.Ahmad, A.Bernstein, E.Diffenderfer, S.J.Freeman, J.P.Greene, T.L.Khoo, F.G.Kondev, A.Larabee, T.Lauritsen, C.J.Lister, B.Meredith, D.Seweryniak, C.Teal, P.Wilson

Structure of 240Pu: Evidence for Octupole Phonon Condensation?

NUCLEAR REACTIONS 240Pu(208Pb, 208Pb'), E=1300 MeV; measured Eγ, Iγ, γγ-coin. 240Pu; deduced levels, J, π.

doi: 10.1103/PhysRevLett.102.122501
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2008AH02      Phys.Rev. C 77, 054302 (2008)

I.Ahmad, F.G.Kondev, Z.M.Koenig, Wm.C.McHarris, S.W.Yates

Two-quasiparticle states in 250Bk studied by decay scheme and transfer reaction spectroscopy

NUCLEAR REACTIONS 249Bk(d, p), E=12.0 MeV; measured proton spectra, σ(θ). 250Bk; deduced levels, J, π.

RADIOACTIVITY 254Es(α); measured Eα, Iα, Eγ, Iγ, ce, ICC, γα-coin. 250Bk; deduced levels, J, π, hindrance factors, γ-multipolarities, band configurations.

doi: 10.1103/PhysRevC.77.054302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2008KA27      Phys.Rev. C 78, 014301 (2008)

K.Katori, I.Ahmad, A.M.Friedman

Two-quasineutron states in 24898Cf and 25098Cf and the neutron-neutron residual interactions

NUCLEAR REACTIONS 249Cf(d, p), (d, t), E=11, 12, 13, 14 MeV; measured charged particle energies, σ(θ). 248,250Cf; deduced levels, J, π, bands, configurations. Comparison with model calculations.

doi: 10.1103/PhysRevC.78.014301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2008KI05      J.Phys.(London) G35, 014033 (2008)

N.Kinoshita, T.Hashimoto, T.Nakanishi, A.Yokoyama, H.Amakawa, T.Mitsugashira, T.Ohtsuki, N.Takahashi, I.Ahmad, J.P.Greene, D.J.Henderson, C.L.Jiang, M.Notani, R.C.Pardo, N.Patel, K.E.Rehm, R.Scott, R.Vondrasek, L.Jisonna, P.Collon, D.Robertson, C.Schmitt, X.D.Tang, Y.Kashiv, H.Nassar, M.Paul

Ultra-sensitive detection of p-process nuclide 146Sm produced by (γ, n), (p, 2nε) and (n, 2n) reactions

doi: 10.1088/0954-3899/35/1/014033
Citations: PlumX Metrics


2008RO21      Phys.Rev. C 78, 034308 (2008)

A.P.Robinson, T.L.Khoo, I.Ahmad, S.K.Tandel, F.G.Kondev, T.Nakatsukasa, D.Seweryniak, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, S.Eeckhaudt, J.P.Greene, P.T.Greenlees, S.Gros, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, G.D.Jones, T.Lauritsen, C.J.Lister, D.Peterson, J.Qian, U.S.Tandel, X.Wang, S.Zhu

Kπ = 8- isomers and Kπ = 2- octupole vibrations in N = 150 shell-stabilized isotones

NUCLEAR REACTIONS 206Pb(48Ca, 2n), E=217 MeV; measured Eγ, Iγ, conversion electron spectra, γγ-, (ce)γ-coin, half-life. 252No; deduced levels, J, π. 244Pu, 248Cf, 250Fm; systematics of 2- and 8- states.

RADIOACTIVITY 246Am(β-) [from 244Pu(α, pn), E=42 MeV]; measured Eγ, Iγ, conversion electron spectra, γγ-, (ce)γ-spectra, isomer half-life. 246Cm; deduced levels, J, π.

doi: 10.1103/PhysRevC.78.034308
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2008SJ01      Phys.Rev. C 78, 064317 (2008)

S.K.L.Sjue, D.Melconian, A.Garcia, I.Ahmad, A.Algora, J.Aysto, V.-V.Elomaa, T.Eronen, J.Hakala, S.Hoedl, A.Kankainen, T.Kessler, I.D.Moore, F.Naab, H.Penttila, S.Rahaman, A.Saastamoinen, H.E.Swanson, C.Weber, S.Triambak, K.Deryckx

Electron-capture branch of 100Tc and tests of nuclear wave functions for double-β decays

RADIOACTIVITY 100Tc(EC); measured X-ray spectra, Eγ, Iγ; deduced branching ratio, B(GT).

doi: 10.1103/PhysRevC.78.064317
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2007AH05      Nucl.Instrum.Methods Phys.Res. A579, 458 (2007)

I.Ahmad, F.G.Kondev, J.P.Greene, M.A.Kellett, A.L.Nichols

Measurement of the 240Pu half-life

RADIOACTIVITY 244Cm, 240Pu(α); measured Eα, Iα and T1/2.

doi: 10.1016/j.nima.2007.04.096
Citations: PlumX Metrics


2007GU05      Phys.Rev.Lett. 98, 093001 (2007)

J.R.Guest, N.D.Scielzo, I.Ahmad, K.Bailey, J.P.Greene, R.J.Holt, Z.-T.Lu, T.P.O'Connor, D.H.Potterveld

Laser Trapping of 225Ra and 226Ra with Repumping by Room-Temperature Blackbody Radiation

NUCLEAR MOMENTS 225Ra; measured hfs. Laser trapping.

doi: 10.1103/PhysRevLett.98.093001
Citations: PlumX Metrics


2007HA49      J.Nucl.Radiochem.Sci. 8, 109 (2007)

T.Hashimoto, T.Nakanishi, A.Yokoyama, H.Amakawa, T.Mitsugashira, T.Ohtsuki, N.Takahashi, I.Ahmad, J.P.Greene, D.J.Henderson, C.L.Jiang, M.Notani, R.C.Pardo, N.Patel, K.E.Rehm, R.Scott, R.Vondrasek, L.Jisonna, P.Collon, D.Robertson, C.Schmitt, X.D.Tang, Y.Kashiv, M.Paul

Technological Development for Half-life Measurement of 146Sm Nuclide

NUCLEAR REACTIONS 147Sm(γ, n), E < 50 MeV; 147Sm(n, 2n), E=6-10 MeV; 147Sm(p, 2n), E=21 MeV; measured Eα, Iα.


2007KO01      Appl.Radiat.Isot. 65, 335 (2007)

F.G.Kondev, I.Ahmad, J.P.Greene, M.A.Kellett, A.L.Nichols

Measurements of the half-life of 246Cm and the α-decay emission probabilities of 246Cm and 250Cf

RADIOACTIVITY 246Cm, 250Cf(α); measured Eα, Iα, T1/2; deduced α-emission probabilities. Comparison with previous results.

doi: 10.1016/j.apradiso.2006.08.011
Citations: PlumX Metrics


2007KU23      Eur.Phys.J. A 33, 307 (2007)

J.Kurpeta, W.Urban, Ch.Droste, A.Plochocki, S.G.Rohozinski, T.Rzaca-Urban, T.Morek, L.Prochniak, K.Starosta, J.Aysto, H.Penttila, J.L.Durell, A.G.Smith, G.Lhersonneau, I.Ahmad

Low-spin structure of 113Ru and 113Rh

RADIOACTIVITY 113Ru, 113Rh(β-) [from 248cm(SF)]; measured Eγ, Iγ, βγ, γγ-coinc. 113Ru, Rh deduced levels, J, π, logft.Compared results to model calculations.

doi: 10.1140/epja/i2006-10464-2
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2007LA20      Phys.Rev. C 75, 064309 (2007)

T.Lauritsen, R.V.F.Janssens, T.L.Khoo, I.Ahmad, M.P.Carpenter, F.G.Kondev, C.J.Lister, E.F.Moore, D.Seweryniak, S.Zhu, T.Dossing, B.Herskind, A.Korichi, A.Lopez-Martens, R.M.Clark, P.Fallon, G.Lane, A.O.Macchiavelli, D.Ward, A.M.Heinz, D.G.Jenkins, A.J.Larabee, B.Meredith, J.Kozemczak, P.Chowdhury

Rotational damping, ridges, and the quasicontinuum of γ rays in 152Dy

NUCLEAR REACTIONS 108Pd(48Ca, 4n)152Dy, E=191 MeV; measured Eγ, Iγ, γγ-coinc. Analyzed quasicontinuum and ridge spectra and feeding intensity of the superdeformed bands.

doi: 10.1103/PhysRevC.75.064309
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2007PA15      J.Radioanal.Nucl.Chem. 272, 243 (2007)

M.Paul, A.Valenta, I.Ahmad, D.Berkovits, C.Bordeanu, S.Ghelberg, Y.Hashimoto, A.Hershkowitz, S.Jiang, T.Nakanishi, K.Sakamoto

An upper limit to interstellar 244Pu abundance as deduced from radiochemical search in deep-sea sediment: An account

doi: 10.1007/s10967-007-0508-3
Citations: PlumX Metrics


2007RZ01      Phys.Rev. C 75, 054319 (2007)

T.Rzaca-Urban, K.Pagowska, W.Urban, A.Zlomaniec, J.Genevey, J.A.Pinston, G.S.Simpson, M.S.Sarkar, S.Sarkar, H.Faust, A.Scherillo, I.Tsekhanovich, R.Orlandi, J.L.Durell, A.G.Smith, I.Ahmad

First observation of excited states in the 138I nucleus

RADIOACTIVITY 138I [from 248Cm(SF)]; measured prompt and delayed Eγ, Iγ. Deduced level energies, J, π.

doi: 10.1103/PhysRevC.75.054319
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2007RZ02      Phys.Rev. C 76, 027302 (2007)

T.Rzaca-Urban, W.Urban, J.L.Durell, A.G.Smith, I.Ahmad

New excited states in 82Ge: Possible weakening of the N = 50 closed shell

RADIOACTIVITY 82Ge(IT)[from 248Cm(SF)]; measured Eγ, Iγ, γγ-coinc. 82Ge deduced levels, J, π.

doi: 10.1103/PhysRevC.76.027302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2007RZ03      Eur.Phys.J. A 32, 5 (2007)

T.Rzaca-Urban, W.Urban, M.S.Sarkar, S.Sarkar, J.L.Durell, A.G.Smith, B.J.Varley, I.Ahmad

First observation of medium-spin excitations in the 138Cs nucleus

RADIOACTIVITY 138Cs(IT) [from 248Cm(SF)]; measured Eγ, Iγ, γγ-coinc. 138Cs deduced levels, J, π.

doi: 10.1140/epja/i2007-10362-1
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2007TA34      Phys.Rev.Lett. 99, 052502 (2007)

X.D.Tang, K.E.Rehm, I.Ahmad, C.R.Brune, A.Champagne, J.P.Greene, A.A.Hecht, D.Henderson, R.V.F.Janssens, C.L.Jiang, L.Jisonna, D.Kahl, E.F.Moore, M.Notani, R.C.Pardo, N.Patel, M.Paul, G.Savard, J.P.Schiffer, R.E.Segel, S.Sinha, B.Shumard, A.H.Wuosmaa

New Determination of the Astrophysical S Factor SE1 of the 12C(α, γ)16O Reaction

RADIOACTIVITY 16N(β-), (β-α); measured Eα, Iα, 12Cα-coin. 12C(α, γ); deduced astrophysical S-factor.

doi: 10.1103/PhysRevLett.99.052502
Citations: PlumX Metrics


2007UR03      Phys.Rev. C 76, 037301 (2007)

W.Urban, T.Rzaca-Urban, A.Syntfeld-Kazuch, J.L.Durell, A.G.Smith, B.J.Varley, I.Ahmad

Near-yrast structure of the 149La nucleus

RADIOACTIVITY 149La [from 248Cm(SF)]; measured Eγ, Iγ, γγ-coinc. 149La deduced levels, J, π.

doi: 10.1103/PhysRevC.76.037301
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006AH02      Pramana 66, 495 (2006)

I.Ahmad, M.R.Arafah

Diffraction model analysis of pion-12C elastic scattering at 800 MeV/c: Optical potential by inversion

NUCLEAR REACTIONS 12C(π+, π+), (π-, π-), E at 800 MeV/c; analyzed σ(θ); deduced model parameters. Diffraction model.

doi: 10.1007/BF02704493
Citations: PlumX Metrics


2006AH09      Phys.Scr. T125, 78 (2006)

I.Ahmad

Identification of Nilsson states in transcurium nuclei

RADIOACTIVITY 253Es, 255Fm(α); 249Cm(β-); 251Es(EC); measured Eγ, Iγ, γγ-coin. 249Bk, 251Cf deduced single-particle states. Gammasphere array.

doi: 10.1088/0031-8949/2006/T125/017
Citations: PlumX Metrics


2006AH10      Phys.Rev.C 74, 065803 (2006)

I.Ahmad, J.P.Greene, E.F.Moore, S.Ghelberg, A.Ofan, M.Paul, W.Kutschera

Improved measurement of the 44Ti half-life from a 14-year long study

RADIOACTIVITY 44Ti(EC) [from 45Sc(p, 2n)]; measured Eγ, Iγ, T1/2.

doi: 10.1103/PhysRevC.74.065803
Citations: PlumX Metrics


2006DR07      Phys.Rev.Lett. 97, 122501 (2006)

G.D.Dracoulis, F.G.Kondev, G.J.Lane, A.P.Byrne, T.R.McGoram, T.Kibedi, I.Ahmad, M.P.Carpenter, R.V.F.Janssens, T.Lauritsen, C.J.Lister, D.Seweryniak, P.Chowdhury, S.K.Tandel

Anomalous Isomeric Decays in 174Lu as a Probe of K Mixing and Interactions in Deformed Nuclei

NUCLEAR REACTIONS 175,176Lu, 174Yb(136Xe, X)174Lu, E=6.0 MeV/nucleon; measured prompt and delayed Eγ, Iγ, γγ-coin. 174Lu deduced levels, J, π, configurations, isomer T1/2, K-mixing. Gammasphere array.

doi: 10.1103/PhysRevLett.97.122501
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006NA02      Phys.Rev.Lett. 96, 041102 (2006)

H.Nassar, M.Paul, I.Ahmad, Y.Ben-Dov, J.Caggiano, S.Ghelberg, S.Goriely, J.P.Greene, M.Hass, A.Heger, A.Heinz, D.J.Henderson, R.V.F.Janssens, C.L.Jiang, Y.Kashiv, B.S.Nara Singh, A.Ofan, R.C.Pardo, T.Pennington, K.E.Rehm, G.Savard, R.Scott, R.Vondrasek

40Ca(α, γ)44Ti Reaction in the Energy Regime of Supernova Nucleosynthesis

NUCLEAR REACTIONS 4He(40Ca, γ), E(cm) ≈ 0.6-1.2 MeV/nucleon; measured yield. 40Ca(α, γ), E=low; deduced astrophysical reaction rate. Accelerator mass spectrometry.

doi: 10.1103/PhysRevLett.96.041102
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1406.


2006OR05      Phys.Rev. C 73, 054310 (2006)

R.Orlandi, A.G.Smith, D.Patel, G.S.Simpson, R.M.Wall, J.F.Smith, O.J.Onakanmi, I.Ahmad, J.P.Greene, M.P.Carpenter, T.Lauritsen, C.J.Lister, R.V.F.Janssens, F.G.Kondev, D.Seweryniak, B.J.P.Gall, O.Dorveaux, A.E.Stuchbery

Single-particle and collective degrees of freedom in 101Zr and 103, 105Mo

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ(θ, H), γγ-coin. 101Zr, 103,105Mo levels deduced δ, g-factors, quadrupole moments, configurations. Gammasphere array, time-integrated perturbed angular correlation, rigid triaxial rotor-plus-particle calculations.

doi: 10.1103/PhysRevC.73.054310
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006PE17      Phys.Rev. C 74, 014316 (2006)

D.Peterson, B.B.Back, R.V.F.Janssens, T.L.Khoo, C.J.Lister, D.Seweryniak, I.Ahmad, M.P.Carpenter, C.N.Davids, A.A.Hecht, C.L.Jiang, T.Lauritsen, X.Wang, S.Zhu, F.G.Kondev, A.Heinz, J.Qian, R.Winkler, P.Chowdhury, S.K.Tandel, U.S.Tandel

Decay modes of 250No

RADIOACTIVITY 250No(SF) [from 204Pb(48Ca, 2n)]; measured T1/2 for ground and isomeric state decay; deduced upper limit for α-decay branching ratio. 219,220Th(α) [from 176Yb(48Ca, xn)]; measured T1/2.

doi: 10.1103/PhysRevC.74.014316
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006PI14      Phys.Rev.C 74, 064304 (2006)

J.A.Pinston, W.Urban, Ch.Droste, T.Rzaca-Urban, J.Genevey, G.Simpson, J.L.Durell, A.G.Smith, B.J.Varley, I.Ahmad

Triaxiality in 105Mo and 107Mo from the low to intermediate spin region

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin. 105Mo deduced levels, J, π, rotational bands, configurations, triaxial deformation. Eurogam2 array.

NUCLEAR REACTIONS 241Pu(n, F), E=thermal; measured prompt and delayed Eγ, Iγ. 107Mo deduced levels, isomer T1/2, branching ratios, triaxial deformation.

doi: 10.1103/PhysRevC.74.064304
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22957. Data from this article have been entered in the XUNDL database. For more information, click here.


2006TA13      Phys.Rev. C 73, 044306 (2006)

S.K.Tandel, P.Chowdhury, E.H.Seabury, I.Ahmad, M.P.Carpenter, S.M.Fischer, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, Y.R.Shimizu

High-K isomers and rotational structures in 174W

NUCLEAR REACTIONS 128Te(50Ti, 4n), E=215, 225 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 174W deduced high-spin levels, J, π, configurations, high-K isomeric states T1/2. Gammasphere array, comparison with cranked mean-field model predictions.

doi: 10.1103/PhysRevC.73.044306
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006TA19      Phys.Rev.Lett. 97, 082502 (2006)

S.K.Tandel, T.L.Khoo, D.Seweryniak, G.Mukherjee, I.Ahmad, B.Back, R.Blinstrup, M.P.Carpenter, J.Chapman, P.Chowdhury, C.N.Davids, A.A.Hecht, A.Heinz, P.Ikin, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, C.J.Lister, E.F.Moore, D.Peterson, P.Reiter, U.S.Tandel, X.Wang, S.Zhu

K Isomers in 254No: Probing Single-Particle Energies and Pairing Strengths in the Heaviest Nuclei

NUCLEAR REACTIONS 208Pb(48Ca, 2n), E=217 MeV; measured delayed Eγ, Iγ, E(ce), I(ce), (ce)γ-coin, X-ray spectra. 254No deduced levels, J, π, isomeric states T1/2, configurations, deformation. Mass separator, recoil-decay tagging.

doi: 10.1103/PhysRevLett.97.082502
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006UR01      Phys.Rev. C 73, 037302 (2006)

W.Urban, Ch.Droste, T.Rzaca-Urban, A.Zlomaniec, J.L.Durell, A.G.Smith, B.J.Varley, I.Ahmad

Near-yrast structure of the 109Mo nucleus

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin. 109Mo deduced levels, J, π, configurations. Eurogam2 array.

doi: 10.1103/PhysRevC.73.037302
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2006UR02      Eur.Phys.J. A 27, 257 (2006)

W.Urban, M.Saha-Sarkar, S.Sarkar, T.Rzaca-Urban, J.L.Durell, A.G.Smith, J.A.Genevey, J.A.Pinston, G.S.Simpson, I.Ahmad

New information on the T1/2 = 47 s isomer in the 136I nucleus

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin. 136I deduced levels, J, π, ICC, configurations. Eurogam2 array.

doi: 10.1140/epja/i2005-10273-1
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2005AH02      Phys.Rev. C 71, 024311 (2005)

I.Ahmad, J.C.Banar, J.A.Becker, T.A.Bredeweg, J.R.Cooper, D.S.Gemmell, A.Kraemer, A.Mashayekhi, D.P.McNabb, G.G.Miller, E.F.Moore, P.Palmer, L.N.Pangault, R.S.Rundberg, J.P.Schiffer, S.D.Shastri, T.-F.Wang, J.B.Wilhelmy

Search for x-ray induced decay of the 31-yr isomer of 178Hf using synchrotron radiation

NUCLEAR REACTIONS 178mHf(X-ray, X), E=8-30 keV; measured prompt and delayed Eγ, X-ray spectra; deduced σ upper limit for induced isomer decay. Comparison with previous results.

doi: 10.1103/PhysRevC.71.024311
Citations: PlumX Metrics


Back to query form    [Next]


Note: The following list of authors and aliases matches the search parameter I.Ahmad: , I.M.AHMAD