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NSR database version of April 11, 2024.

Search: Author = S.Ahmed

Found 19 matches.

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2019AH01      Phys.Rev. C 99, 025503 (2019)

S.Ahmed, for the TUCAN Collaboration

First ultracold neutrons produced at TRIUMF

NUCLEAR REACTIONS W(p, n), E=483 MeV; measured E(n), I(n), ultracold neutron (UCN) yield and storage lifetimes using 6Li-enriched glass scintillator for neutron detection using the superfluid-helium source for ultracold neutrons at a new spallation source at TRIUMF. Comparison with simulated ultracold neutron yield. Relevance to future measurement of the electric dipole moment of the neutron, and other experiments.

doi: 10.1103/PhysRevC.99.025503
Citations: PlumX Metrics

2013UR01      Phys.Rev. C 87, 031304 (2013)

W.Urban, M.Jentschel, R.F.Casten, J.Jolie, Ch.Bernards, B.Maerkisch, Th.Materna, P.Mutti, L.Prochniak, T.Rzaca-Urban, G.S.Simpson, V.Werner, S.Ahmed

02+ band in 102Ru and the evolution of nuclear deformation in Ru isotopes

NUCLEAR REACTIONS 101Ru(n, γ), E=cold neutrons; measured Eγ, Iγ, γγ-coin, γγ(θ) using PF1B cold-neutron facility and GAMS5 spectrometer at Grenoble. 102Ru; deduced levels, J, π, bands, multipolarity, mixing ratio, interaction pattern between 0+ states. Systematics of 0+2 bands and other low-lying levels in Ru isotopes from N=50-66.

doi: 10.1103/PhysRevC.87.031304
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

2007BR30      Phys.Rev. C 76, 054605 (2007)

T.A.D.Brown, P.Papka, B.R.Fulton, D.L.Watson, S.P.Fox, D.Groombridge, M.Freer, N.M.Clarke, N.I.Ashwood, N.Curtis, V.Ziman, P.McEwan, S.Ahmed, W.N.Catford, D.Mahboub, C.N.Timis, T.D.Baldwin, D.C.Weisser

Decay studies for states in 9Be up to 11 MeV: Insights into the n+8Be and α+5He cluster structure

NUCLEAR REACTIONS 9Be(6Li, 6Li), E=60 MeV; measured charged particle spectra, branching ratios, αα-correlations. 7Li, 9Be; deduced excitation energies.

doi: 10.1103/PhysRevC.76.054605
Citations: PlumX Metrics

2007PA21      Phys.Rev. C 75, 045803 (2007)

P.Papka, T.A.D.Brown, B.R.Fulton, D.L.Watson, S.P.Fox, D.Groombridge, M.Freer, N.M.Clarke, N.I.Ashwood, N.Curtis, V.Ziman, P.McEwan, S.Ahmed, W.N.Catford, D.Mahboub, C.N.Timis, T.D.Baldwin, D.C.Weisser

Decay path measurements for the 2.429 MeV state in 9Be: Implications for the astrophysical α + α + n reaction

NUCLEAR REACTIONS 9Be(6Li, 6Li'), E=60 MeV; measured Eα, Iα, αα-coin, angular correlations following break-up. 9Be deduced excited state partial decay widths, branching ratios. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.75.045803
Citations: PlumX Metrics

2006AS01      J.Phys.(London) G32, 463 (2006)

N.I.Ashwood, M.Freer, S.Sakuta, S.Ahmed, N.M.Clarke, N.Curtis, P.McEwan, C.J.Metelko, B.Novatski, N.Soic, D.Stepanov, V.Ziman

Cluster breakup of 18O and 22Ne

NUCLEAR REACTIONS 9Be(18O, α14C), (18O, 10Be12C), (18O, 9Be13C), E=136, 148.5 MeV; measured excitation energy spectra. 18O deduced levels, J, π, octupole deformed band, α-decay features. 22Ne deduced no evidence for population of excited states.

doi: 10.1088/0954-3899/32/4/005
Citations: PlumX Metrics

2006FR16      J.Phys.(London) G32, 2235 (2006)

M.Freer, S.Ahmed, N.I.Ashwood, N.M.Clarke, N.Curtis, C.J.Metelko, S.Yildiz, V.A.Ziman, N.Soic, B.Novatski, S.Sakuta, N.A.Orr, B.R.Fulton, R.Pitkin

8Be + 14C break-up of 22Ne

NUCLEAR REACTIONS 12C(18O, 2α14C), E=140 MeV; measured particle spectra. 22Ne deduced level energies, possible cluster structure.

doi: 10.1088/0954-3899/32/11/015
Citations: PlumX Metrics

2006GH10      Fizika(Zagreb) B 15, 107 (2006)

D.Ghosh, A.Deb, P.K.Haldar, P.Ghosh, S.I.Ahmed

Fragmentation of targets in muon-nucleus interactions at (420 ± 45) GeV-strong two-particle azimuthal correlation

NUCLEAR REACTIONS Ag, Br(μ-, X), E ≈ 420 GeV; analyzed fragment angular distributions; deduced correlation functions.

2006PR01      Nucl.Phys. A765, 263 (2006)

D.L.Price, M.Freer, S.Ahmed, N.I.Ashwood, N.M.Clarke, N.Curtis, P.McEwan, C.J.Metelko, B.Novatski, S.Sakuta, N.Soic, D.Stepanov, V.Ziman

Alpha-decay of excited states in 13C and 14C

NUCLEAR REACTIONS 14C(13C, α9Be), (13C, α10Be), E=77.8, 112.25, 119.25 MeV; measured fragment energy spectra, σ(θ). 13,14C deduced excited states energies, J, π, α-decay features, α-cluster structure. Comparison with earlier work.

doi: 10.1016/j.nuclphysa.2005.11.004
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1657.

2006YI01      Phys.Rev. C 73, 034601 (2006)

S.Yildiz, M.Freer, N.Soic, S.Ahmed, N.I.Ashwood, N.M.Clarke, N.Curtis, B.R.Fulton, C.J.Metelko, B.Novatski, N.A.Orr, R.Pitkin, S.Sakuta, V.A.Ziman

α-decaying states 18O, 20Ne and 22Ne in 18O beam induced reactions

NUCLEAR REACTIONS 12C(18O, α14C), (18O, α16O), (18O, α18O), E=140 MeV; measured charged particle spectra, angular correlations. 18O, 20,22Ne deduced levels, J, π, configurations, cluster structure.

doi: 10.1103/PhysRevC.73.034601
Citations: PlumX Metrics

2005AS04      Phys.Rev. C 72, 024314 (2005)

N.I.Ashwood, M.Freer, D.J.Millener, N.A.Orr, F.Carstoiu, S.Ahmed, J.C.Angelique, V.Bouchat, W.N.Catford, N.M.Clarke, N.Curtis, F.Hanappe, M.Horoi, Y.Kerckx, J.L.Lecouey, F.M.Marques, T.Materna, G.Normand, S.Pain, N.Soic, C.Timis, A.Unshakova, V.A.Ziman

High-energy two-neutron removal from 10Be

NUCLEAR REACTIONS 12C(10Be, 2α), (10Be, n2α), E=30 MeV/nucleon; measured En, Eα, relative energy spectra, σ(E). 8,9Be deduced levels, J, π. Kinematically complete measurement.

doi: 10.1103/PhysRevC.72.024314
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1402.

2004AH02      Phys.Rev. C 69, 024303 (2004)

S.Ahmed, M.Freer, J.C.Angelique, N.I.Ashwood, V.Bouchat, W.N.Catford, N.M.Clarke, N.Curtis, F.Hanappe, J.C.Lecouey, F.M.Marques, T.Materna, A.Ninane, G.Normand, N.A.Orr, S.Pain, N.Soic, C.Timis, A.Unshakova, V.A.Ziman

Breakup reaction studies of 10Be and 10, 11B using a 10Be beam

NUCLEAR REACTIONS 12C(10Be, α6He), (10Be, 2nα), (10Be, 2α), (10Be, α6Li), (10Be, α7Li), E=302 MeV; measured particle spectra, σ; deduced reaction mechanism features. 10Be deduced levels, possible J, π.

doi: 10.1103/PhysRevC.69.024303
Citations: PlumX Metrics

2004AH03      Phys.Rev.Lett. 92, 102004 (2004)

S.N.Ahmed, and the SNO Collaboration

Constraints on Nucleon Decay via Invisible Modes from the Sudbury Neutrino Observatory

RADIOACTIVITY 1n, 1H; measured T1/2 lower limit for invisible decay channels. Neutrino observatory data.

doi: 10.1103/PhysRevLett.92.102004
Citations: PlumX Metrics

2004AH06      Nucl.Phys. A738, 507 (2004)

S.Ahmed, M.Freer

Breakup reaction studies of 10Be and 10, 11B using a 10Be beam

NUCLEAR REACTIONS 12C(10Be, α6He), (10Be, α6Li), (10Be, α7Li), E=302 MeV; measured particle spectra. 10Be, 10,11Be deduced excited states.

doi: 10.1016/j.nuclphysa.2004.04.098
Citations: PlumX Metrics

2004AS02      Phys.Lett. B 580, 129 (2004)

N.I.Ashwood, M.Freer, S.Ahmed, J.C.Angelique, V.Bouchat, W.N.Catford, N.M.Clarke, N.Curtis, O.Dorvaux, B.R.Fulton, F.Hanappe, Y.Kerckx, M.Labiche, J.L.Lecouey, R.C.Lemmon, F.M.Marques, T.Materna, A.Ninane, G.Normand, N.A.Orr, S.Pain, N.Soic, L.Stuttge, C.Timis, A.Unshakova, J.S.Winfield, V.A.Ziman

Helium clustering in neutron-rich Be isotopes

NUCLEAR REACTIONS C(10Be, X), E=30.9 MeV/nucleon; C(11Be, X), E=41.7 MeV/nucleon; C(12Be, X), E=41.8 MeV/nucleon; C(14Be, X), E=34.4 MeV/nucleon; measured fragment yields, excitation energy spectra; deduced neutron-removal and cluster-breakup σ. 10,11,12,14Be deduced cluster structure.

doi: 10.1016/j.physletb.2003.11.035
Citations: PlumX Metrics

2004GH18      Phys.Rev. C 70, 054903 (2004)

D.Ghosh, A.Deb, M.B.Lahiri, P.Ghosh, S.I.Ahmed, P.K.Haldar

Multifractal behavior of nuclear fragments in high-energy leptonic interactions

NUCLEAR REACTIONS Ag, Br(μ, X), E ≈ 420 GeV; measured fragments multiplicity, velocity distributions; deduced fractal moments, generalized fractal dimension.

doi: 10.1103/PhysRevC.70.054903
Citations: PlumX Metrics

2002GH11      Fizika(Zagreb) B 11, 141 (2002)

D.Ghosh, A.Deb, S.I.Ahmed, P.Ghosh

Intermittency and target fragments in muon-nucleus interactions at (420 ± 45) GeV

NUCLEAR REACTIONS Ag, Br(μ, X), E ≈ 420 MeV; analyzed fragments angular distributions, scaled factorial moments, intermittency.

1999GH08      Fizika(Zagreb) B8, 423 (1999)

D.Ghosh, S.K.Das, A.K.Ghosh, A.Deb, S.I.Ahmed, P.Ghosh

Multiplicity Characteristics of Muon-Nucleus Interaction at 400 GeV

NUCLEAR REACTIONS C, F, Cl(μ, X), E=400 GeV; measured charged particle multiplicity, correlations between light and dark tracks; deduced negative binomial distribution. Freon target, bubble chamber.

1999ZA18      Radiochim.Acta 85, 9 (1999)

J.H.Zaidi, M.Arif, S.Ahmed, I.H.Qureshi

Measurement of Fission Neutron Spectrum Averaged Cross Sections of Some Threshold Reactions on Ruthenium: Small scale production of 96Tc in a nuclear reactor

NUCLEAR REACTIONS 96,99,101,104Ru(n, p), 96Ru(n, 2n), 96,102,104Ru(n, α), E=reactor; measured production σ. Activation technique.

1997AH08      J.Phys.Soc.Jpn. 66, 3063 (1997)

S.Ahmed, P.Akther, N.Ferdous, A.Begum, H.Sen Gupta

Elastic Scattering of 65 MeV Protons from Several Nuclei between 16O and 209Bi

NUCLEAR REACTIONS 16O, 20Ne, 24Mg, 28Si, 40Ar, 40,44,48Ca, 46,48,50Ti, 54,56Fe, 59Co, 58,60,62,64Ni, 89Y, 90Zr, 98,100Mo, 144Sm, 208Pb, 209Bi(polarized p, p), E=65 MeV; analyzed σ(θ), analyzing power; deduced optical model parameters. 40Ca, 60Ni, 92Mo(polarized p, d), E=65 MeV; 40,48Ca(polarized d, p), E=56 MeV; analyzed σ(θ), analyzing power. DWBA analyses.

doi: 10.1143/JPSJ.66.3063
Citations: PlumX Metrics

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Note: The following list of authors and aliases matches the search parameter S.Ahmed: , S.I.AHMED, S.N.AHMED