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NSR database version of May 20, 2024.

Search: Author = N.U.Syed

Found 24 matches.

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2017GU21      Phys.Rev. C 96, 024313 (2017)

M.Guttormsen, S.Goriely, A.C.Larsen, A.Gorgen, T.W.Hagen, T.Renstrom, S.Siem, N.U.H.Syed, G.Tagliente, H.K.Toft, H.Utsunomiya, A.V.Voinov, K.Wikan

Quasicontinuum γ decay of 91, 92Zr: Benchmarking indirect (n, γ) cross section measurements for the s process

NUCLEAR REACTIONS 92Zr(p, d), E=28 MeV; 92Zr(p, p'), E=17 MeV; measured E(p), I(p), E(d), I(d), Eγ, Iγ, (particle)γ-coin, γ-ray multiplicity measured using SiRi array of silicon telescopes for charged particles and CACTUS array of NaI(Tl) detectors for γ rays at Oslo Cyclotron laboratory (OCL). 91,92Zr; deduced levels, J, π, nuclear level densities (NLDs), E1 and M1 γ-ray strength functions (γSF), l=0 resonances. 90,91Zr(n, γ), E=0.001-1 MeV and kT<0.11 MeV; deduced σ(E) and Maxwellian-averaged cross sections using TALYS code on the basis of the experimental NLDs and γSF in the present work, and compared with available experimental data.

doi: 10.1103/PhysRevC.96.024313
Citations: PlumX Metrics


2012BU09      Phys.Rev. C 85, 064328 (2012)

A.Burger, A.C.Larsen, S.Hilaire, M.Guttormsen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, M.Krticka, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norrby, H.T.Nyhus, G.Perdikakis, S.Siem, A.Spyrou, N.U.H.Syed

Nuclear level density and γ-ray strength function of 43Sc

NUCLEAR REACTIONS 46Ti(p, α), E=32 MeV; measured Eγ, Eα, αγ-coin. 43Sc; deduced nuclear level density and γ-ray strength function. Comparison with 45Sc level density, and with microscopic, combinatorial model calculations. Oslo method.

doi: 10.1103/PhysRevC.85.064328
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1992.


2012LA02      Phys.Rev. C 85, 014320 (2012)

A.C.Larsen, S.Goriely, A.Burger, M.Guttormsen, A.Gorgen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norrby, H.T.Nyhus, G.Perdikakis, A.Schiller, S.Siem, A.Spyrou, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Primary γ-ray spectra in 44Ti of astrophysical interest

NUCLEAR REACTIONS 46Ti(p, t), E=32 MeV; measured particle spectra, Eγ, Iγ, γγ-, (particle)γ-coin, primary continuum γ spectra 44Ti; deduced levels, J, π, radiative strength function, level density, average radiative width by applying the Oslo method. 46,48Ti; deduced levels, J, π. 40Ca(α, γ)44Ti; analyzed cross sections of astrophysical interest using TALYS code. Comparison with generalized Lorentzian (GLO) and previous studies.

doi: 10.1103/PhysRevC.85.014320
Citations: PlumX Metrics


2012NY01      Phys.Rev. C 85, 014323 (2012)

H.T.Nyhus, S.Siem, M.Guttormsen, A.C.Larsen, A.Burger, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Level density and thermodynamic properties of dysprosium isotopes

NUCLEAR REACTIONS 164Dy(3He, α), (3He, 3He'), E=38 MeV; measured particle spectra, Eγ, Iγ, γγ-coin, primary continuum γ spectra. 163Dy, 164Dy; deduced level density, γ-ray transmission coefficient, micro-canonical entropies, average temperature, heat capacity. Oslo method. Comparison with Fermi gas model calculations.

doi: 10.1103/PhysRevC.85.014323
Citations: PlumX Metrics


2012WI03      Phys.Rev. C 85, 034607 (2012)

J.N.Wilson, F.Gunsing, L.A.Bernstein, A.Burger, A.Gorgen, M.Guttormsen, A.-C.Larsen, P.Mansouri, T.Renstrom, S.J.Rose, A.Semchenkov, S.Siem, N.U.H.Syed, H.K.Toft, M.Wiedeking, T.Wiborg-Hagen

Indirect (n, γ) cross sections of thorium cycle nuclei using the surrogate method

NUCLEAR REACTIONS 232Th(d, p)233Th, E=12 MeV; 232Th(3He, t)232Pa, 232Th(3He, α)231Th, E=24 MeV; measured energy loss, E(particle), I(particle), Eγ, Iγ, γ(fragment)-coin using CACTUS γ-detector array, and Silicon Ring charged-particle detector at Oslo Cyclotron Laboratory; deduced γ decay probabilities. 230,232Th, 231Pa(n, γ), E<1.4 MeV; deduced cross sections using surrogate ratio method. Comparison with evaluated data libraries. Optical model calculations of compound nucleus formation cross sections, and weighting function technique.

doi: 10.1103/PhysRevC.85.034607
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23165.


2011GU02      Phys.Rev. C 83, 014312 (2011)

M.Guttormsen, A.C.Larsen, A.Burger, A.Gorgen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, M.Krticka, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norrby, H.T.Nyhus, G.Perdikakis, A.Schiller, S.Siem, A.Spyrou, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Fermi?s golden rule applied to the γ decay in the quasicontinuum of 46Ti

NUCLEAR REACTIONS 46Ti(p, p'), E=15 MeV; measured Ep, Ip, pγ-coin, excitation functions; deduced level density and radiative strength function (RSF) using Oslo method. Fermi?s golden rule employed to disentangle the γ strength and level density in the γ decay between states in the quasicontinuum of 46Ti.

doi: 10.1103/PhysRevC.83.014312
Citations: PlumX Metrics


2011LO06      Nucl.Phys. A852, 15 (2011)

A.Lopez-Martens, T.Wiborg-Hagen, K.Hauschild, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, G.Drafta, B.Gall, A.Gorgen, M.Guttormsen, A.V.Isaev, I.N.Izosimov, A.P.Kabachenko, D.E.Katrasev, T.Kutsarova, A.N.Kuznetsov, A.C.Larsen, O.N.Malyshev, A.Minkova, S.Mullins, H.T.Nyhus, D.Pantelica, J.Piot, A.G.Popeko, S.Saro, N.Scintee, S.Siem, N.U.H.Syed, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Spectroscopy of 253No and its daughters

NUCLEAR REACTIONS 207Pb(48Ca, 2n), (48Ca, 3n), E=220 MeV; measured Eα, Iα, Eγ, Iγ, E(ce), I(ce), αγ, α(ce)-coin; deduced ICCs, multipolarities, Qα. 253No, 249Fm; deduced levels, J, π, T1/2.

doi: 10.1016/j.nuclphysa.2011.01.012
Citations: PlumX Metrics

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


2010NY01      Phys.Rev. C 81, 024325 (2010); Erratum Phys.Rev. C 82, 029909 (2010)

H.T.Nyhus, S.Siem, M.Guttormsen, A.C.Larsen, A.Burger, N.U.H.Syed, G.M.Tveten, A.Voinov

Radiative strength functions in 163, 164Dy

NUCLEAR REACTIONS 164Dy(3He, 3He'), (3He, α), E=38 MeV; measured continuum γ spectra, particle spectra, and (particle)γ-coin; deduced level density, radiative strength functions, contributions from giant dipole resonances, and integrated B(M1) strength of pygmy resonances.

doi: 10.1103/PhysRevC.81.024325
Citations: PlumX Metrics


2010TO06      Phys.Rev. C 81, 064311 (2010)

H.K.Toft, A.C.Larsen, U.Agvaanluvsan, A.Burger, M.Guttormsen, G.E.Mitchell, H.T.Nyhus, A.Schiller, S.Siem, N.U.H.Syed, A.Voinov

Level densities and γ-ray strength functions in Sn isotopes

NUCLEAR REACTIONS 119Sn(3He, 3He), (3He, α), E=38 MeV; measured Eγ, particle-γ coin. 118,119Sn; deduced γ-ray strength functions, level densities, parity asymmetry functions, collective enhancement factors, and spin distributions. Oslo method. Combinatorial BCS model.

doi: 10.1103/PhysRevC.81.064311
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1852.


2009NY01      Acta Phys.Pol. B40, 593 (2009)

H.T.Nyhus, S.Siem, M.Guttormsen, A.C.Larsen, A.Burger, N.U.H.Syed, H.K.Toft, G.M.Tveten, A.Voinov

Level Densities, Thermodynamics and γ-Ray Strength Functions in 163, 164Dy

NUCLEAR REACTIONS 163,164Dy(3He, α), (3He, 3He'), E not given;measured Eγ, Iγ, Eα, Iα; deduced level densities, γ-ray strength functions, pygmy resonance.


2009SY01      Phys.Rev. C 79, 024316 (2009)

N.U.H.Syed, M.Guttormsen, F.Ingebretsen, A.C.Larsen, T.Lonnroth, J.Rekstad, A.Schiller, S.Siem, A.Voinov

Level density and γ-decay properties of closed shell Pb nuclei

NUCLEAR REACTIONS 206,208Pb(3He, 3He'γ), (3He, αγ), E=38 MeV; measured Eγ, Iγ, (particle)γ-coin; deduced spin distributions, level densities, entropies, temperature, γ-ray strength functions. Comparison of E1 and M1 strengths with Standard Lorentzian and enhanced generalized Lorentzian models.

doi: 10.1103/PhysRevC.79.024316
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1680.


2009SY02      Phys.Rev. C 80, 044309 (2009)

N.U.H.Syed, A.C.Larsen, A.Burger, M.Guttormsen, S.Harissopulos, M.Kmiecik, T.Konstantinopoulos, M.Krticka, A.Lagoyannis, T.Lonnroth, K.Mazurek, M.Norby, H.T.Nyhus, G.Perdikakis, S.Siem, A.Spyrou

Extraction of thermal and electromagnetic properties in 45Ti

NUCLEAR REACTIONS 46Ti(p, d), E=32 MeV; measured Eγ, (particle)γ-coin; deduced level densities, γ-ray strength function, entropy, temperature, and spin distributions using Oslo method. Comparison of measured level densities with combinatorial BCS model calculations using Nilsson orbitals, and measured γ-ray strength functions with generalized Lorentzian model calculations.

doi: 10.1103/PhysRevC.80.044309
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1778.


2008HA12      Phys.Rev. C 77, 047305 (2008); Erratum Phys.Rev. C 79, 019902 (2009)

K.Hauschild, A.Lopez-Martens, A.V.Yeremin, O.Dorvaux, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, B.Gall, V.A.Gorshkov, M.Guttormsen, P.Jones, A.P.Kabachenko, A.Khouaja, A.C.Larsen, O.N.Malyshev, A.Minkova, H.T.Nyhus, Yu.Ts.Oganessian, D.Pantelica, A.G.Popeko, F.Rotaru, S.Saro, A.V.Shutov, S.Siem, A.I.Svirikhin, N.U.H.Syed

Half-life and excitation energy of the Iπ = 13/2+ isomer in 209Ra

NUCLEAR REACTIONS 174Yb(40Ar, 5n), E=192 MeV; measured half-life, α-spectra, Eγ, Iγ, γγ-, γα-coin, conversion electrons. 209Ra; deduced levels, J, π, configurations. 205,207Po, 207,209Rn, 211Ra; systematics.

doi: 10.1103/PhysRevC.77.047305
Citations: PlumX Metrics

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


2008HA31      Phys.Rev. C 78, 021302 (2008)

K.Hauschild, A.Lopez-Martens, A.V.Yeremin, O.Dorvaux, S.Antalic, A.V.Belozerov, Ch.Briancon, M.L.Chelnokov, V.I.Chepigin, D.Curien, B.Gall, A.Gorgen, V.A.Gorshkov, M.Guttormsen, F.Hanappe, A.P.Kabachenko, F.Khalfallah, A.C.Larsen, O.N.Malyshev, A.Minkova, A.G.Popeko, M.Rousseau, N.Rowley, S.Saro, A.V.Shutov, S.Siem, L.Stuttge, A.I.Svirikhin, N.U.H.Syed, Ch.Theisen, M.Venhart

High-K, t1/2=1.4(1) ms, isomeric state in 255Lr

RADIOACTIVITY 255Lr, 255No(α) [from 209Bi(48Ca, 2n), E=219 MeV]; measured Eα, Iα, conversion electrons, Eγ, Iγ, γα-, (ce)α-coin. 255Lr; deduced levels, J, π, hindrance factors, half-life of isomeric state.

doi: 10.1103/PhysRevC.78.021302
Citations: PlumX Metrics

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


2008VO02      Phys.Rev. C 77, 034613 (2008)

A.V.Voinov, S.M.Grimes, A.C.Larsen, C.R.Brune, M.Guttormsen, T.Massey, A.Schiller, S.Siem, N.U.H.Syed

Level densities of 44Sc and 47Ti from different experimental techniques

NUCLEAR REACTIONS 45Sc(3He, α), (3He, p), E=11 Mev; measured Eγ, Iγ, particle spectra, α particle angular distributions; deduced level density, αγ-coin. 44Sc, 47Ti; deduced level density. Comparison with theory.

doi: 10.1103/PhysRevC.77.034613
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1613.


2007GU15      Acta Phys.Pol. B38, 1489 (2007)

M.Guttormsen, R.Chankova, A.C.Larsen, J.Rekstad, S.Siem, N.U.H.Syed, U.Agvaanluvsan, A.Schiller, A.Voinov

The Role of Broken Cooper Pairs in Warm Nuclei


2007HU03      Phys.Rev.Lett. 98, 072501 (2007)

A.M.Hurst, P.A.Butler, D.G.Jenkins, P.Delahaye, F.Wenander, F.Ames, C.J.Barton, T.Behrens, A.Burger, J.Cederkall, E.Clement, T.Czosnyka, T.Davinson, G.de Angelis, J.Eberth, A.Ekstrom, S.Franchoo, G.Georgiev, A.Gorgen, R.-D.Herzberg, M.Huyse, O.Ivanov, J.Iwanicki, G.D.Jones, P.Kent, U.Koster, T.Kroll, R.Krucken, A.C.Larsen, M.Nespolo, M.Pantea, E.S.Paul, M.Petri, H.Scheit, T.Sieber, S.Siem, J.F.Smith, A.Steer, I.Stefanescu, N.U.H.Syed, J.Van de Walle, P.Van Duppen, R.Wadsworth, N.Warr, D.Weisshaar, M.Zielinska

Measurement of the Sign of the Spectroscopic Quadrupole Moment for the 2+1 State in 70Se: No Evidence for Oblate Shape

NUCLEAR REACTIONS 104Pd(70Se, 70Se'), E=206 MeV; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 70Se deduced prolate deformation.

doi: 10.1103/PhysRevLett.98.072501
Citations: PlumX Metrics

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


2007LA23      Acta Phys.Pol. B38, 1495 (2007)

A.C.Larsen, M.Guttormsen, R.Chankova, F.Ingebretsen, T.Lonnroth, S.Messelt, S.W.Odegard, J.Rekstad, S.Siem, N.U.H.Syed, A.Schiller, A.Voinov

Radiative Strength Functions of Warm Nuclei in the 1f7/2 Shell

NUCLEAR REACTIONS 51V, 45Sc(3He, αγ), (3He, 3He'γ), E=30, 38 MeV; measured Eγ, Eα, E(3He), (particle)γ-coinc. 50,51V, 44,45Sc deduced level densities and giant resonance strength functions.


2007LA31      Phys.Rev. C 76, 044303 (2007)

A.C.Larsen, M.Guttormsen, R.Chankova, F.Ingebretsen, T.Lonnroth, S.Messelt, J.Rekstad, A.Schiller, S.Siem, N.U.H.Syed, A.Voinov

Nuclear level densities and γ-ray strength functions in 44, 45Sc

NUCLEAR REACTIONS 45Sc(3He, αγ), (3He, 3He'γ), E=38 MeV; measured Eγ, Iγ. 44Sc, 45Sc; deduced level densities, γ-strength functions, parity asymmetry.

doi: 10.1103/PhysRevC.76.044303
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1700.


2007LO11      Eur.Phys.J. A 32, 245 (2007)

A.Lopez-Martens, K.Hauschild, A.V.Yeremin, O.Dorvaux, A.V.Belozerov, Ch.Briancon, M.L.Chelnokov, V.I.Chepigin, D.Curien, P.Desesquelles, B.Gall, V.A.Gorshkov, M.Guttormsen, F.Hanappe, A.P.Kabachenko, F.Khalfallah, A.Korichi, A.C.Larsen, O.N.Malyshev, A.Minkova, Yu.Ts.Oganessian, A.G.Popeko, M.Rousseau, N.Rowley, R.N.Sagaidak, S.Sharo, A.V.Shutov, S.Siem, L.Stuttge, A.I.Svirikhin, N.U.H.Syed, Ch.Theisen

Isomeric states in 253No

NUCLEAR REACTIONS 207Pb(48Ca, 2n), E∼217 MeV; measured Eα, Eγ, E(ce) with the Gabriela detector. 253No deduced levels, J, π, configurations.

RADIOACTIVITY 253No(α) [from 207Bi(48Ca, 2n) and subsequent decay]; measured Eα, Eγ, E(ce), αγ-, α(ce)-coin, T1/2. 253No deduced levels, J, π, configurations.

doi: 10.1140/epja/i2007-10391-8
Citations: PlumX Metrics

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


2007SI17      Acta Phys.Pol. B38, 1499 (2007)

S.Siem, M.Guttormsen, R.Chankova, A.C.Larsen, J.Rekstad, A.Schiller, N.U.H.Syed

Level Densities and γ Strength Functions in 146, 147Sm Nuclei

NUCLEAR STRUCTURE 146,147Sm; analyzed data to extract nuclear level density and radiative strength functions. Compared results to existing data.


2006LA12      Phys.Rev. C 73, 064301 (2006)

A.C.Larsen, R.Chankova, M.Guttormsen, F.Ingebretsen, S.Messelt, J.Rekstad, S.Siem, N.U.H.Syed, S.W.Odegard, T.Lonnroth, A.Schiller, A.Voinov

Microcanonical entropies and radiative strength functions of 50, 51V

NUCLEAR REACTIONS 51V(3He, 3He'), (3He, α), E=30 MeV; measured Eγ, Iγ, (particle)γ-coin. 50,51V deduced level densities, radiative strength functions.

doi: 10.1103/PhysRevC.73.064301
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1699.


2006LO12      Phys.Rev. C 74, 044303 (2006)

A.Lopez-Martens, K.Hauschild, A.V.Yeremin, A.V.Belozerov, Ch.Briancon, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, B.Gall, V.A.Gorshkov, M.Guttormsen, F.Hanappe, A.P.Kabachenko, F.Khalfallah, A.Korichi, A.C.Larsen, O.N.Malyshev, A.Minkova, Yu.Ts.Oganessian, A.G.Popeko, M.Rousseau, N.Rowley, R.N.Sagaidak, S.Sharo, A.V.Shutov, S.Siem, A.I.Svirikhin, N.U.H.Syed, Ch.Theisen

Detailed spectroscopy of 249Fm

RADIOACTIVITY 253No(α) [from 207Pb(48Ca, 2n)]; measured Eα, Eγ, αγ-coin. 249Fm deduced levels, J, π, ICC, configurations. Level systematics in neighboring isotones discussed.

doi: 10.1103/PhysRevC.74.044303
Citations: PlumX Metrics

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


2005SU07      Acta Phys.Pol. B36, 1197 (2005)

A.C.Sunde, M.Guttormsen, R.Chankova, F.Ingebretsen, T.Lonnroth, S.Messelt, J.Rekstad, A.Schiller, S.Siem, N.U.H.Syed, A.Voinov, S.W.Odegard

Thermal and electromagnetic properties of the light vanadium isotopes 50, 51V

NUCLEAR REACTIONS 51V(3He, 3He'), (3He, α), E not given; measured Eγ, Iγ. 50,51V deduced radiative strength functions, thermodynamic properties.


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