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NSR database version of April 11, 2024.

Search: Author = S.A.Karamian

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2018CH13      Nature(London) 554, 7691 (2018)

C.J.Chiara, J.J.Carroll, M.P.Carpenter, J.P.Greene, D.J.Hartley, R.V.F.Janssens, G.J.Lane, J.C.Marsh, D.A.Matters, M.Polasik, J.Rzadkiewicz, D.Seweryniak, S.Zhu, S.Bottoni, A.B.Hayes, S.A.Karamian

Isomer depletion as experimental evidence of nuclear excitation by electron capture

NUCLEAR REACTIONS ⁷Li(⁹⁰Zr, 3np), E=840 MeV; measured Eγ, Iγ, γγγ-coin using Gammasphere array at ATLAS-ANL. ⁹³Mo; deduced levels, first experimental evidence of process of nuclear excitation by electron capture (NEEC) through the isomer depletion of 2425-keV isomer and excitation of the 2430-keV intermediate level from the 2425-keV isomer, and observation of 2475-268-685-1478 γ cascade in coincidence.

NUCLEAR REACTIONS ⁹⁰Zr(⁷Li, 3np), E(cm)=same as above for reverse kinematic reaction; measured Eγ, Iγ, γγ-coin at Australian National Laboratory. ⁹³Mo; deduced levels, non-observation of 2475- and 268-keV γ rays in γγ coincidences in the normal kinematics reaction consistent with NEEC interpretation in the inverse kinematic reaction study at Argonne.

doi: 10.1038/nature25483
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015KA43      Phys.Atomic Nuclei 78, 757 (2015)

S.A.Karamian, J.J.Carroll, N.V.Aksenov, Yu.A.Albin, A.G.Belov, G.A.Bozhikov, S.N.Dmitriev, G.Ya.Starodub

Production of isotopes and isomers with irradiation of Z = 47-50 targets by 23-MeV bremsstrahlung

NUCLEAR REACTIONS Ag, Sn(γ, X)¹⁰⁶Ag/¹⁰⁸Ag/¹¹³In/¹¹⁵In/¹¹⁷In/¹¹³Cd/¹²³Sn, E<23 MeV; measured reaction products, Eγ, Iγ; deduced relative and partial yields of isomeric and ground states.

doi: 10.1134/S1063778815060113
Citations: PlumX Metrics

2014KA53      Phys.Atomic Nuclei 77, 1429 (2014); Yad.Fiz. 77, 1496 (2014)

S.A.Karamian

Z dependence of the (γ, α) reaction yield

NUCLEAR REACTIONS ¹⁰⁹Ag, ¹¹³Cd, ¹¹⁵In, ¹¹⁹Sn, ¹⁷⁶Yb, ¹⁸¹Ta, ¹⁹³Ir, ²⁰⁷Pb(γ, α), Cd(γ, p)¹¹¹Ag/¹¹²Ag/¹¹³Ag, Sn(γ, p)¹¹⁷In/¹¹⁵In, ¹⁷⁴Yb(γ, p), Hf(γ, p)¹⁷⁷Lu, E<23 MeV; measured reaction products, Eγ, Iγ; deduced yields. Comparison with available data.

doi: 10.1134/S1063778814110040
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0890.

2012AN03      Phys.Rev. C 85, 044609 (2012)

J.U.Andersen, J.Chevallier, J.S.Forster, S.A.Karamian, C.R.Vane, J.R.Beene, C.J.Gross, H.F.Krause, J.F.Liang, D.Shapira, A.Uguzzoni

Time delays in heavy-ion-induced fission of medium-Z nuclei, measured by crystal blocking

NUCLEAR REACTIONS Mo(³²S, X), E=170, 180 MeV; Mo(⁴⁸Ti, X), E=225, 240 MeV; Mo(⁵⁸Ni, X), E=300 MeV; W, Mo(⁷⁴Ge, X), E=400, 450 MeV; measured spectra of elastically scattered ions and fission fragments, energy loss, blocking lifetimes, blocking dips from elastic scattering at HRIBF facility, fission energy distribution, fission blocking dips, time delays in fission by crystal blocking of fission fragments. Comparison with continuum-model and statistical model calculations.

doi: 10.1103/PhysRevC.85.044609
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2012KA38      Phys.Atomic Nuclei 75, 1362 (2012)

S.A.Karamian, J.J.Carroll

Calculated yield of isomer depletion due to NEEC for ^93mMo recoils

NUCLEAR REACTIONS ⁴He(⁹¹Zr, 2n), E=6 MeV/nucleon; calculated yield of isomer depletion. Comparison with available data.

doi: 10.1134/S1063778812110117
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2011HA15      Int.J.Mod.Phys. E20, 474 (2011)

A.B.Hayes, D.Cline, C.Y.Wu, A.M.Hurst, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, T.Lauritsen, D.Seweryniak, S.Zhu, S.A.Karamian, P.M.Walker, T.P.D.Swan, S.V.Rigby, D.M.Cullen, N.M.Lumley, P.Mason, J.J.Carroll, B.Detwiler, T.Harle, I.Mills, G.Trees

New structures in ¹⁷⁸Hf and Coulomb excitation of isomers

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁷⁸Hf, ¹⁷⁸Hf'), E=985 MeV; measured Eγ, Iγ, particle-γ-coin.; deduced energy levels, J, π, isomer bands, rotational sequence feeding.

doi: 10.1142/S0218301311017879
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2011KA06      Phys.Rev. C 83, 024604 (2011)

S.A.Karamian, J.J.Carroll

Cross section for inelastic neutron "acceleration" by ¹⁷⁸Hf^m2

NUCLEAR REACTIONS ¹⁷⁸Hf(n, n'), (n, γ), E=thermal; analyzed inelastic neutron acceleration (INNA) cross section for ^178m2Hf target, σ(isomer)/σ(g.s.), statistical estimates for the probability of different reaction channels. ¹⁷⁸Hf; deduced levels which are candidates for INNA with ^178m2Hf isomer as target. ¹⁷⁹Hf; deduced level population from parent levels in ¹⁷⁸Hf. Comparison with theoretically predicted cross section for INNA.

doi: 10.1103/PhysRevC.83.024604
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2011KA19      Nucl.Instrum.Methods Phys.Res. A646, 87 (2011)

S.A.Karamian, J.J.Carroll, N.V.Aksenov, Y.A.Albin, G.A.Bozhikov, S.N.Dmitriev, G.Y.Starodub, G.K.Vostokin

Production of isomers in compound and transfer reactions with ⁴He ions

NUCLEAR REACTIONS ¹⁷⁶Yb, Lu(α, xn), (α, X)¹⁷⁵Yb/¹⁷¹Lu/¹⁷²Lu/¹⁷³Lu/¹⁷⁴Lu/¹⁷⁷Lu/¹⁷¹Hf/¹⁷²Hf/¹⁷³Hf/¹⁷⁵Hf/¹⁷⁸Hf/¹⁷⁹Hf/¹⁷⁵Ta/¹⁷⁶Ta/¹⁷⁷Ta, E=35 MeV; measured Eγ, Iγ; deduced yields, σ, isomer to ground state ratios. Comparison with Fermi-gas model within the formalism of Jackson-Sikkeland calculations.

doi: 10.1016/j.nima.2011.03.010
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0882.

2011KA41      Phys.Atomic Nuclei 74, 1705 (2011)

S.A.Karamian

Fission time-scale in experiments and in multiple initiation model

NUCLEAR REACTIONS ¹⁷⁹Hf, Hf(p, F), E=100-300 MeV; calculated fission probabilities, σ; deduced model of multi-step initiation of the collective motion.

doi: 10.1134/S1063778811110111
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2010HA24      Phys.Rev. C 82, 044319 (2010)

A.B.Hayes, D.Cline, K.J.Moody, I.Ragnarsson, C.Y.Wu, J.A.Becker, M.P.Carpenter, J.J.Carroll, D.Gohlke, J.P.Greene, A.A.Hecht, R.V.F.Janssens, S.A.Karamian, T.Lauritsen, C.J.Lister, R.A.Macri, R.Propri, D.Seweryniak, X.Wang, R.Wheeler, S.Zhu

Coulomb excitation of a ²⁴²Am isomeric target: E2 and E3 strengths, rotational alignment, and collective enhancement

NUCLEAR REACTIONS ^242mAm(⁴⁰Ar, ⁴⁰Ar'), E=170.5 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin using Gammasphere array. ²⁴²Am; deduced levels, J, π, rotational bands, Nilsson configurations, band parameters, alignments, B(E1), B(E2) and B(E3) strengths. Coulomb excitation. Comparison of alignment of the observed bands in ²⁴²Am with single-particle alignments in ²⁴¹Am and with particle-rotor model calculations.

doi: 10.1103/PhysRevC.82.044319
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Data from this article have been entered in the XUNDL database. For more information, click here.

2009CA20      Phys.Lett. B 679, 203 (2009)

J.J.Carroll, S.A.Karamian, R.Propri, D.Gohlke, N.Caldwell, P.Ugorowski, T.Drummond, J.Lazich, H.Roberts, M.Helba, Z.Zhong, M.-T.Tang, J.-J.Lee, K.Liang

Search for low-energy induced depletion of ¹⁷⁸Hf^m2 at the SPring-8 synchrotron

NUCLEAR REACTIONS ^172,178Hf(γ, γ'), E=9.5352-9.5851 keV; measured Eγ, Iγ, γγ-coin; deduced integral σ and that induced depletion of 2nd metastable state not seen.

doi: 10.1016/j.physletb.2009.07.025
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Data from this article have been entered in the XUNDL database. For more information, click here.

2009KA20      Phys.Atomic Nuclei 72, 938 (2009)

S.A.Karamian

Fission-to-spallation ratio and fission dynamics manifestation

doi: 10.1134/S1063778809060052
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2009KA43      Nucl.Instrum.Methods Phys.Res. A 600, 488 (2009)

S.A.Karamian, C.A.Ur, J.Adam, V.G.Kalinnikov, N.A.Lebedev, G.K.Vostokin, C.B.Collins, I.I.Popescu

Spallation and fission products in the (p+¹⁷⁹Hf and (p+^natHf) reactions

NUCLEAR REACTIONS Hf(p, x), ¹⁷⁹Hf(p, x), E=90-400 MeV; measured products, ²²Na, ⁷Be, ⁵⁴Mn, ⁶⁰Co, ⁷⁴As, ⁹⁵Nb, ⁹¹Nb, ⁸⁸Y, ⁸⁴Rb, ¹⁰²Rh, ⁹⁵Tc, ¹⁰⁶Ag, ¹¹⁰Ag, ¹⁶⁸Tm, ⁴⁸V, ⁵⁹Fe, ⁵⁶Co, ⁶⁵Zn, ⁷²Se, ⁸²Sr, ⁷⁵Se, ⁸³Rb, ⁸⁸Zr, ⁸⁵Sr, ⁹⁵Zr, ¹⁰³Ru, ¹⁰⁵Ag, ¹⁴⁹Eu, ¹⁵⁶Tb, ¹⁶⁰Tb, ⁸⁷Y, ¹⁴⁶Gd, ¹⁵⁵Tb, ¹⁷⁴Lu, ¹⁷⁷Lu, ¹⁷⁸Hf, ¹⁷⁹Hf, ¹⁴⁸Eu, ¹⁷²Lu, ¹⁵⁶Eu, ¹⁶⁷Tm, ¹⁴⁹Gd, ¹⁶⁹Yb, ¹⁶⁶Yb, ¹⁷¹Lu, ¹⁷⁰Lu, ¹⁷³Lu, ¹⁷²Hf, ¹⁷⁵Hf; deduced σ, σ(E). Data were imported from EXFOR entry A0822.

doi: 10.1016/j.nima.2008.12.001
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0822.

2008AN14      Phys.Rev. C 78, 064609 (2008)

J.U.Andersen, J.Chevallier, J.S.Forster, S.A.Karamian, C.R.Vane, J.R.Beene, A.Galindo-Uribarri, J.Gomez del Campo, C.J.Gross, H.F.Krause, E.Padilla-Rodal, D.Radford, D.Shapira, C.Broude, F.Malaguti, A.Uguzzoni

Attosecond time delays in heavy-ion induced fission measured by crystal blocking

NUCLEAR REACTIONS W(³²S, ³²S), (³²S, X), E=180 MeV; W(⁴⁸Ti, ⁴⁸Ti), (⁴⁸Ti, X), E=240-255 MeV; W(⁵⁸Ni, ⁵⁸Ni), (⁵⁸Ni, ⁵⁸Ni'), (⁵⁸Ni, X), E=330-375 MeV; W(⁷⁴Ge, ⁷⁴Ge), (⁷⁴Ge, X), E=390 MeV; measured fission energy spectra, σ; calculated blocking dips. Continuum model calculations.

doi: 10.1103/PhysRevC.78.064609
Citations: PlumX Metrics

2007AN29      Phys.Rev.Lett. 99, 162502 (2007)

J.U.Andersen, J.Chevallier, J.S.Forster, S.A.Karamian, C.R.Vane, J.R.Beene, A.Galindo-Uribarri, J.Gomez del Campo, H.F.Krause, E.Padilla-Rodal, D.Radford, C.Broude, F.Malaguti, A.Uguzzoni

Crystal Blocking Measurements of the Time Delay of Fission Induced by ³²S, ⁴⁸Ti, and ⁵⁸Ni Bombardment of W

NUCLEAR REACTIONS W(³²S, F), E=180 MeV; W(⁴⁸Ti, F), E=240-255 MeV; W(⁵⁸Ni, F), E=315-375 MeV; measured fission yields. Deduced fission delay.

doi: 10.1103/PhysRevLett.99.162502
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2007KA09      Phys.Atomic Nuclei 70, 205 (2007)

S.A.Karamian, A.B.Yakushev

Formation of heavy compound nuclei, their survival, and correlation with longtime-scale fission

NUCLEAR REACTIONS ²⁰⁸Pb(⁴⁸Ca, X), (⁵⁰Ti, X), (⁵⁴Cr, X), (⁵⁸Fe, X), (⁶⁴Ni, X), (⁷⁰Zn, X), (⁷⁶Ge, X), (⁸²Se, X), (⁸⁶Kr, X), (⁷²Ni, X), (⁷⁸Ni, X), (⁷⁸Zn, X), (⁸⁴Ge, X), (⁹⁰Se, X), (⁹⁴Kr, X), ¹⁸⁶W, ¹⁹²Os, ¹⁹⁸Pt(⁹⁴Kr, X), ¹⁹²Os, ¹⁹⁸Pt(¹⁰⁰Sr, X), ¹⁹⁸Pt(¹⁰⁴Zr, X), E not given; calculated barrier energy, potential energy difference. ²⁰⁸Pb, ²⁰⁹Bi(⁵⁰Ti, xn), (⁵⁴Cr, xn), (⁵⁸Fe, xn), (⁶²Ni, xn), (⁷⁰Zn, xn), E not given; analyzed correlation between superheavy production σ and potential energy difference. ¹⁹²Os(⁹⁴Kr, n), (⁹⁴Kr, 2n), E^* ≈ 5-23 MeV; calculated excitation functions.

doi: 10.1134/S1063778807020019
Citations: PlumX Metrics

2007KA27      Phys.Rev. C 75, 057301 (2007)

S.A.Karamian, J.J.Carroll, S.Iliev, S.P.Tretyakova

Weak K hindrance manifested in α decay of the ¹⁷⁸Hf^m2 isomer

RADIOACTIVITY ¹⁷⁸Hf(α); measured partial half lives and hindrance factors.

doi: 10.1103/PhysRevC.75.057301
Citations: PlumX Metrics

2006UG01      Nucl.Instrum.Methods Phys.Res. A565, 657 (2006)

P.Ugorowski, R.Propri, S.A.Karamian, D.Gohlke, J.Lazich, N.Caldwell, R.S.Chakrawarthy, M.Helba, H.Roberts, J.J.Carroll

Design and characterization of a compact multi-detector array for studies of induced gamma emission: Spontaneous decay of ^178m2Hf as a test case

RADIOACTIVITY ^178mHf(IT); measured Eγ, Iγ, multiplicities.

doi: 10.1016/j.nima.2006.05.209
Citations: PlumX Metrics

2005KA52      Yad.Fiz. 68, 1827 (2005); Phys.Atomic Nuclei 68, 1765 (2005)

S.A.Karamian

Comparative Analysis of the ^178m2Hf Yield at Reactions with Different Projectiles

NUCLEAR REACTIONS ¹⁷⁷Hf(n, γ), E=thermal, resonance; ¹⁷⁸Hf(n, n'γ), E > 3 MeV; measured isomer production σ. Ta, W, ¹⁸⁶W, Re(p, X)^179mHf/^178mHf/^177mLu/¹⁷⁸W/¹⁷⁵Hf/¹⁷²Hf/¹⁷³Lu, E=650 MeV; analyzed yields, isomer ratios. ¹⁷⁶Yb(α, 2n), E < 36 MeV; measured isomer yield. Other reactions discussed.

doi: 10.1134/1.2131107
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2004KA40      Nucl.Instrum.Methods Phys.Res. A527, 609 (2004)

S.A.Karamian, J.Adam, P.Chaloun, D.V.Filossofov, V.Henzl, D.Henzlova, V.G.Kalinnikov, N.A.Korolev, N.A.Lebedev, A.F.Novgorodov, C.B.Collins, I.I.Popescu, C.A.Ur

Yield of radionuclides and isomers produced in the fragmentation on ^natW and ¹⁸⁶W (97%) targets with protons at 630, 420 and 270 MeV

NUCLEAR REACTIONS W, ¹⁸⁶W(p, X), E=270, 420, 630 MeV; measured spallation and fission products isotopic yields. Activation technique, comparison with model predictions.

doi: 10.1016/j.nima.2004.03.185
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0800.

2004KA51      Nucl.Instrum.Methods Phys.Res. A530, 463 (2004)

S.A.Karamian, J.J.Carroll, J.Adam, N.A.Demekhina

Production of the ^178m2Hf isomer using a 4.5-GeV electron accelerator

NUCLEAR REACTIONS Ta(γ, X)^178mHf/¹⁷²Hf/¹⁵⁰Eu/¹³³Ba, E=4.5 GeV bremsstrahlung; measured production σ.

doi: 10.1016/j.nima.2004.04.224
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2003KA15      Eur.Phys.J. A 17, 49 (2003)

S.A.Karamian, J.S.Forster, J.U.Andersen, W.Assmann, C.Broude, J.Chevallier, J.S.Geiger, F.Gruner, V.A.Khodyrev, F.Malaguti, A.Uguzzoni

Fission lifetimes of Th nuclei measured by crystal blocking

NUCLEAR REACTIONS W(³²S, ³²S), (³²S, F), E=170-180 MeV; measured scattered particle and fission fragment spectra, blocking pattern due to target crystal; deduced fission lifetime features. ²¹⁴Th calculated compound nucleus T_1/2, fission probability vs energy, spin. Crystal blocking technique.

doi: 10.1140/epja/i2002-10139-0
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2003MU03      Yad.Fiz. 66, 8 (2003); Phys.Atomic Nuclei 66, 6 (2003)

G.V.Muradian, O.Ya.Shatrov, M.A.Voskanian, L.P.Yastrebova, V.L.Volkov, Ch.Briancon, M.Hussonnois, Yu.Ts.Oganessian, S.A.Karamian, O.Constantinescu

Search for Neutron Resonances in the ^178m2Hf Isomer and Their investigation

NUCLEAR REACTIONS ^178mHf(n, γ), E < 8 MeV; measured Eγ, Iγ. ^178mHf deduced neutron resonance energies, widths.

doi: 10.1134/1.1540652
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41434.

2002CA55      Hyperfine Interactions 143, 37 (2002)

J.J.Carroll, J.Burnett, T.Drummond, J.Lepak, R.Propri D.Smith, S.A.Karamian, J.Adam, F.Stedile, F.J.Agee

Initial Search for Triggered Gamma Emission from ¹⁷⁸Hf^m2 Using the YSU Miniball Array

NUCLEAR REACTIONS ^178mHf(γ, γ'), E=100 keV bremsstrahlung; measured Eγ, Iγ, γγ-coin; deduced upper limit for triggered emission rate.

doi: 10.1023/A:1024033601402
Citations: PlumX Metrics

2002KA50      Nucl.Instrum.Methods Phys.Res. A489, 448 (2002)

S.A.Karamian, J.Adam, D.V.Filosofov, D.Henzlova, V.Henzl, V.G.Kalinnikov, N.A.Lebedev, A.F.Novgorodov, C.B.Collins, I.I.Popescu, C.A.Ur

Accumulation of the ^178m2Hf Isomeric Nuclei Through Spallation with Intermediate-Energy Protons of Tantalum and Rhenium Targets

NUCLEAR REACTIONS Ta, Re(p, X), E=100-660 MeV; measured spallation and fission product yields; deduced optimum conditions for ^178mHf production.

doi: 10.1016/S0168-9002(02)00574-0
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1038.

2002KA74      Hyperfine Interactions 143, 69 (2002)

S.A.Karamian, J.J.Carroll

Possibility of Combining Nuclear Level Pumping in a Plasma with Lasing in a Solid

NUCLEAR STRUCTURE ⁹⁸Tc, ¹⁰³Ru, ¹⁶¹Dy, ¹⁸¹Ta, ¹⁸⁹Os, ¹⁹⁷Au, ²³⁵U, ^242mAm; analyzed possible resonance between atomic and nuclear levels, photoexcitation and nuclear excitation by electron transition mechanisms.

ATOMIC PHYSICS ⁹⁸Tc, ¹⁰³Ru, ¹⁶¹Dy, ¹⁸¹Ta, ¹⁸⁹Os, ¹⁹⁷Au, ²³⁵U, ^242mAm; analyzed possible resonance between atomic and nuclear levels, photoexcitation and nuclear excitation by electron transition mechanisms.

doi: 10.1023/A:1024069214606
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2001CA61      Hyperfine Interactions 135, 3 (2001)

J.J.Carroll, S.A.Karamian, L.A.Rivlin, A.A.Zadernovsky

X-Ray-Driven Gamma Emission

doi: 10.1023/A:1013967219408
Citations: PlumX Metrics

2000CO15      Phys.Rev. C61, 054305 (2000)

C.B.Collins, F.Davanloo, A.C.Rusu, M.C.Iosif, N.C.Zoita, D.T.Camase, J.M.Hicks, S.A.Karamian, C.A.Ur, I.I.Popescu, R.Dussart, J.M.Pouvesle, V.I.Kirischuk, N.V.Strilchuk, P.McDaniel, C.E.Crist

γ Emission from the 31-yr Isomer of ¹⁷⁸Hf Induced by X-Ray Irradiation

NUCLEAR REACTIONS ^178mHf(X-ray, γ), E=63 keV bremsstrahlung; measured delayed Eγ, Iγ; deduced induced isomeric decay.

doi: 10.1103/PhysRevC.61.054305
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2000CO30      Yad.Fiz. 63, No 12, 2163 (2000); Phys.Atomic Nuclei 63, 2067 (2000)

C.B.Collins, F.Davanloo, M.C.Iosif, R.Dussart, J.M.Hicks, S.A.Karamian, C.A.Ur, I.I.Popescu, V.I.Kirischuk, J.M.Pouvesle, P.McDaniel, C.E.Crist

Study of the Gamma Emission from the 31-yr Isomer of ¹⁷⁸Hf Induced by X-Ray Irradiation

NUCLEAR REACTIONS ^178mHf(X-ray, γ), E=90 keV bremsstrahlung; measured Eγ, Iγ; deduced accelerated isomer decay, integrated absorption σ.

RADIOACTIVITY ^178mHf(IT); measured Eγ, Iγ with and without x-ray irradiation; deduced accelerated decay.

doi: 10.1134/1.1333875
Citations: PlumX Metrics

2000KA25      Yad.Fiz. 63, No 5, 787 (2000); Phys.Atomic Nuclei 63, 718 (2000)

S.A.Karamian, J.Adam, A.G.Belov, Yu.V.Norseev, V.I.Stegailov, P.Chaloun

Measurement of the Light-Nuclide Yield from the Photon-Induced Fission of ²³²Th

NUCLEAR REACTIONS ²³²Th(γ, F)²⁴Na/²⁸Mg, E=12, 16.5, 24 MeV bremsstrahlung; measured delayed Eγ, Iγ; deduced yields.

doi: 10.1134/1.855697
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2000KA32      Phys.Rev. C62, 024601 (2000)

S.A.Karamian, J.Adam, A.G.Belov, J.J.Carroll, Yu.V.Norseev, V.I.Stegailov, P.Chaloun

Light-Mass Yields and Fine Structure of Mass Distributions in ²³²Th Photofission

NUCLEAR REACTIONS ²³²Th(γ, F), E=7.5, 12.0, 24.0 MeV bremsstralung; measured fission fragment mass distributions; ²³²Th(γ, F)²⁴Na/²⁸Mg, E=16.5, 24.0 MeV bremsstrahlung; measured yields; deduced fission mechanism features.

doi: 10.1103/PhysRevC.62.024601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0620.

1999CO05      Phys.Rev.Lett. 82, 695 (1999); Comments Phys.Rev.Lett. 84, 2541 (2000)

C.B.Collins, F.Davanloo, M.C.Iosif, R.Dussart, J.M.Hicks, S.A.Karamian, C.A.Ur, I.I.Popescu, V.I.Kirischuk, J.J.Carroll, H.E.Roberts, P.McDaniel, C.E.Crist

Accelerated Emission of Gamma Rays from the 31-yr Isomer of ¹⁷⁸Hf Induced by X-Ray Irradiation

NUCLEAR REACTIONS ^178mHf(X-ray, γ), E=70, 90 keV bremsstralung; measured Eγ, Iγ(t); deduced accelerated decay, resonant x-ray absorption σ.

RADIOACTIVITY ^178mHf(IT); measured Eγ, Iγ(t) with and without x-ray irradiation; deduced accelerated decay, resonant x-ray absorption σ.

doi: 10.1103/PhysRevLett.82.695
Citations: PlumX Metrics

1999KA03      Phys.Rev. C59, 755 (1999)

S.A.Karamian, C.B.Collins, J.J.Carroll, J.Adam, A.G.Belov, V.I.Stegailov

Fast Neutron Induced Depopulation of the ¹⁸⁰Ta^m Isomer

NUCLEAR REACTIONS ^180mTa(n, n'), E ≈ 5.6 MeV; measured ground-state yield; deduced isomer depopulation probability. ¹⁸⁰Ta deduced K-mixing at moderate excitation energy. Activation technique.

doi: 10.1103/PhysRevC.59.755
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41381.

1999LO13      Acta Phys.Pol. B30, 1319 (1999)

M.Loewe, J.Besserer, J.De Boer, H.J.Maier, M.Wurkner, J.Srebrny, T.Czosnyka, J.Iwanicki, P.J.Napiorkowski, P.von Neumann-Cosel, A.Richter, C.Schlegel, H.J.Wollersheim, P.Alexa, A.I.Levon, S.A.Karamian, G.Sletten

Depopulation of the K^π = 9^- Isomer in ¹⁸⁰Ta via Coulomb Excitation

NUCLEAR REACTIONS ^180mTa(³⁶S, ³⁶S'), E=65-125 MeV; ^180mTa(⁶⁴Ni, ⁶⁴Ni'), E=130, 150 MeV; measured Eγ, σ(θ) following Coulomb excitation. ¹⁸⁰Ta deduced possible level energy. Discussed astrophysical consequences.

1998KA14      Phys.Rev. C57, 1812 (1998)

S.A.Karamian, C.B.Collins, J.J.Carroll, J.Adam

Isomeric to Ground State Ratio in the ^180mTa(γ, γ')^180m,gTa Reaction

NUCLEAR REACTIONS ^180mTa(γ, γ')^180gTa, E=2.5-7.6 MeV bremsstrahlung; measured yield; deduced σ. ¹⁸⁰Ta deduced K-mixing intermediate states level density. Monte Carlo simulation.

doi: 10.1103/PhysRevC.57.1812
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1997CO30      Hyperfine Interactions 107, 141 (1997)

C.B.Collins, J.J.Carroll, Yu.Ts.Oganessian, S.A.Karamian

Evidence for K Mixing in ¹⁷⁸Hf

NUCLEAR STRUCTURE ^{174,175,176,177,178}Hf; analyzed isomeric states properties; deduced evidence for multiparticle isomer in ¹⁷⁸Hf.

doi: 10.1023/A:1012080411476
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1997KA81      Bull.Rus.Acad.Sci.Phys. 61, 1757 (1997)

S.A.Karamian, I.Adam, A.G.Belov, Yu.V.Norseev, P.Chaloun

Probability of Cluster Emission from Excited ¹⁸¹Ta and ²³²Th Nuclei

NUCLEAR REACTIONS ¹⁸¹Ta(γ, X)⁷Be/²⁴Na/²⁸Mg/³⁸S/⁵⁹Fe/⁸⁷Kr/⁹¹Sr/¹⁰³Ru/¹⁰⁵Ru/¹³³I/¹³⁵I/¹⁷⁷Lu/¹⁸⁰Hf/¹⁸⁰Ta, ²³²Th(γ, X)⁷Be/²⁴Na/²⁸Mg/³⁸S/⁵⁹Fe/⁸⁷Kr/⁹¹Sr/¹⁰³Ru/¹⁰⁵Ru/¹³³I/¹³⁵I, E=24 MeV bremsstrahlung; measured relative yields; deduced no cluster emission. Activation technique.

1997KI28      J.Radioanal.Nucl.Chem. 215, 219 (1997)

J.B.Kim, D.Trubert, O.Constantinescu, S.A.Karamian, Yu.Ts.Oganessian, Ch.Briancon, M.Hussonnois

Purity Determination of Super-Enriched ¹⁷⁶Yb by Neutron Activation and Thermal Neutron Capture Cross Section Measurement of the High-Spin (16+) Isomer ^178m2Hf

NUCLEAR REACTIONS ¹⁷⁶Yb(n, γ), E=thermal; measured Eγ, Iγ; deduced ¹⁷⁶Yb sample yield optimization, purity, enrichment features. ^178mHf(n, γ), E=thermal; measured Eγ, Iγ; deduced capture σ to high-spin isomer in ¹⁷⁹Hf. High-spin ^178mHf target from (α, 2n) reaction on enriched ¹⁷⁶Yb target.

doi: 10.1007/BF02034467
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1997KI29      J.Radioanal.Nucl.Chem. 215, 229 (1997)

J.B.Kim, J.Morel, M.Etcheverry, N.Coursol, D.Trubert, O.Constantinescu, S.A.Karamian, Yu.Ts.Oganessian, Ch.Briancon, M.Hussonnois

Precise Measurement of Gamma-Ray Energies and Gamma-Ray Emission Probabilities in ^178m2Hf Decay

NUCLEAR REACTIONS, ICPND ¹⁷⁶Yb(α, 2n), E ≈ 20-45 MeV; measured residual production σ, isomer ratio vs E, Eγ, Iγ. ¹⁷⁸Hf deduced high-spin isomer decay, transition energies.

RADIOACTIVITY ^178mHf; measured Eγ, Iγ from decay of long-lived isomer. ¹⁷⁸Hf deduced levels, J, π.

doi: 10.1007/BF02034469
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1997LO05      Acta Phys.Pol. B28, 101 (1997)

M.Loewe, J.De Boer, H.J.Maier, M.Wurkner, P.Olbratowski, J.Srebrny, J.Choinski, T.Czosnyka, J.Iwanicki, P.J.Napiorkowski, G.Hagemann, G.Sletten, S.A.Karamian, P.von Neumann-Cosel, A.Richter, C.Schlegel, H.J.Wollersheim

The Rotational Bands on the 9^- Isomer in ¹⁸⁰Ta

NUCLEAR REACTIONS ¹⁸⁰Ta(³²S, ³²S'), E=125 MeV, (⁵⁸Ni, ⁵⁸Ni'), E=225 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin following Coulomb excitation. ¹⁸⁰Ta deduced high-spin levels, J, π, branching ratios.

1997OG02      Yad.Fiz. 60, No 7, 1179 (1997); Phys.Atomic Nuclei 60, 1054 (1997)

Yu.Ts.Oganessian, S.A.Karamian

Isomer Excitation and Depletion in Nuclear Reactions

NUCLEAR REACTIONS, ICPND ¹⁷⁶Yb(α, n), (α, 2np), (α, 2n), E ≈ threshold-45 MeV; Ni(¹¹²Sn, X)⁴³Sc/⁵⁴Fe/⁶⁹Se/⁷¹Se/⁹³Ru/⁹⁶Pd, E=63 MeV/nucleon; analyzed isomeric production σ, yield ratios; deduced isomer excitation, depletion mechanism related features.

1997OG05      Hyperfine Interactions 107, 43 (1997)

Yu.Ts.Oganessian, S.A.Karamian

K-Mixing in Nuclear Reactions

NUCLEAR REACTIONS Hf, Ta(γ, X)¹⁷²Hf/¹⁷³Hf/¹⁷⁵Hf/^177mHf/¹⁷⁷Lu/^177mLu/¹⁷⁸Lu/^178mLu/¹⁷⁹Lu/^179mHf/^180mHf/¹⁷⁸Ta/^178mTa/¹⁸⁰Ta, E=23.5 MeV bremsstrahlung; measured yields; deduced systematics, evaporation residue states K-mixing. Results from alpha-, neutron-induced reactions also considered.

doi: 10.1023/A:1012001116019
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1997OG06      Hyperfine Interactions 107, 129 (1997)

Yu.Ts.Oganessian, M.Hussonnois, Ch.Briancon, S.A.Karamian, Z.Szeglowski, D.Ledu, R.Meunier, M.Constantinescu, J.B.Kim, O.Constantinescu

Production, Chemical and Isotopic Separation of the ^178m2Hf High-Spin Isomer

NUCLEAR REACTIONS ¹⁷⁶Yb(α, 2n)^178mHf, E=36 MeV; measured high-spin isomer yield. Isotopic separation, ^178m2Hf isomeric target preparation discussed.

doi: 10.1023/A:1012047504207
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1996DE11      Phys.Rev. C53, 1266 (1996)

S.Deylitz, B.D.Valnion, K.El Abiary, J.de Boer, N.Gollwitzer, R.Hertenberger, G.Graw, R.Kulessa, Ch.Briancon, D.Le Du, R.Meunier, M.Hussonnois, O.Constantinescu, S.Fortier, J.B.Kim, L.H.Rosier, G.Rotbard, Yu.Ts.Oganessian, S.A.Karamian, H.J.Wollersheim, H.Folger, J.Gerl, Th.Happ, C.Hategan

Inelastic Deuteron Scattering from the High-Spin Isomer ^178mHf² (16⁺)

NUCLEAR REACTIONS ¹⁷⁸Hf(d, d'), E=22 MeV; measured deuteron spectra, σ(θ). ¹⁷⁸Hf deduced possible level, J, π. Target in isomeric state.

doi: 10.1103/PhysRevC.53.1266
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1996KA34      Z.Phys. A356, 23 (1996)

S.A.Karamian, J.de Boer, Yu.Ts.Oganessian, A.G.Belov, Z.Szeglowski, B.N.Markov, J.Adam, V.I.Stegailov, Ch.Briancon, O.Constantinescu, M.Hussonnois

Observation of Photonuclear Reactions on Isomeric Targets: ^178m₂Hf(γ, n)^177m₂Hf, ^180mTa(γ, 2n)^178m,178gTa and ^180mTa(γ, p)^179m₂Hf

NUCLEAR REACTIONS, ICPND ¹⁷⁸Hf(γ, n), (γ, 2n), (γ, p), E ≤ 23.5 MeV bremsstrahlung; measured Eγ, Iγ, residuals isomer to ground state yield ratios; analyzed other (γ, n) reaction data, systematics; deduced levels population selectivity does not survive at high excitation energies.

doi: 10.1007/s002180050143
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0936.

1996LO19      Z.Phys. A356, 9 (1996)

M.Loewe, J.de Boer, H.J.Maier, M.Wurkner, P.Olbratowski, J.Srebrny, J.Choinski, T.Czosnyka, J.Iwanicki, P.J.Napiorkowski, G.Hagemann, G.Sletten, S.A.Karamian, P.von Neumann-Cosel, A.Richter, C.Schlegel, H.J.Wollersheim

The Rotational Band on the 9^- Isomer in ¹⁸⁰Ta

NUCLEAR REACTIONS ¹⁸⁰Ta(⁵⁸Ni, ⁵⁸Ni'), E=225 MeV; ¹⁸⁰Ta(³²S, ³²S'), E=125 MeV; measured (particle γ)-coin following Coulomb excitation. ¹⁸⁰Ta deduced high-spin levels, J, π, rotational band, γ-branching ratio, γ-multipolarity, (g(k)-g(R))/Q₀ spin independence.

doi: 10.1007/s002180050140
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1995KA25      Acta Phys.Pol. B26, 375 (1995)

S.A.Karamian

Nuclear Reactions with High-Spin Targets

NUCLEAR REACTIONS ¹⁷⁸Hf(n, γ), E=thermal; measured residual isomer production σ, resonance integral. Target in isomeric state. ¹⁷⁸Hf(²⁰⁸Pb, ²⁰⁸Pb'), E=980 MeV; measured γ(particle)-coin following target (in isomeric state) Coulomb excitation. ¹⁷⁴Hf, ¹⁸⁰Ta(γ, 2n), (γ, X), E ≤ 25 MeV; measured ground state, isomer yields for ^180m,172,173Hf, ^180,178m,178Ta, ¹⁷⁷Lu. ¹⁷⁸Hf deduced bands first level moment of inertia.

1994KA38      Bull.Rus.Acad.Sci.Phys. 58, 50 (1994)

S.A.Karamian, A.G.Belov

(γ, 2n) Reaction on High-Spin ^180mTa Nucleus

NUCLEAR REACTIONS, ICPND Ta, Hf(γ, X), E=threshold-25 MeV bremsstrahlung; ^181,180Ta(γ, 2n), (γ, n), E=threshold-25 MeV bremsstrahlung; measured residuals ^178,178m,180Ta, ^180m,172,173Hf yield vs E.

1994KA54      Bull.Rus.Acad.Sci.Phys. 58, 1812 (1994)

S.A.Karamyan

Nuclear Reactions with High-Spin Targets

NUCLEAR REACTIONS ¹⁸⁰Ta(γ, γ'), (γ, 2n), ¹⁷⁸Hf(γ, γ'), E not given; compiled, reviewed and analyzed Eγ, Iγ. Isomeric, high-spin targets.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41175.

1993RO20      Phys.Rev. C48, R2148 (1993)

G.Rotbard, G.Berrier-Ronsin, O.Constantinescu, S.Fortier, S.Gales, M.Hussonnois, J.B.Kim, J.M.Maison, L.-H.Rosier, J.Vernotte, Ch.Briancon, R.Kulessa, Yu.Ts.Oganessian, S.A.Karamian

Blocking Effect in the 16⁺ → 16⁺ (p, t) Transition on the Isomeric ^178m2Hf Target

NUCLEAR REACTIONS ¹⁷⁸Hf(p, t), E=19 MeV; measured σ(θ); deduced aligned quasineutron orbitals blocking effect. ¹⁷⁸Hf deduced isomer to isomer, 0⁺ → 0⁺ transition σ ratio. Target in isomeric state.

doi: 10.1103/PhysRevC.48.R2148
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1992KA32      Rev.Roum.Phys. 37, 227 (1992)

S.A.Karamyan

Influence of the De-Excitation Time on the Crystal-Blocking Effect for Inelastic Collision Products

NUCLEAR REACTIONS Si, Ge(²²Ne, X), (²⁰Ne, X), (²⁷Al, X), (⁴⁰Ar, X), E=4-8 MeV/nucleon; measured σ(fragment θ), blocking minimum yield, displacement vs E; deduced product deexcitation time. Solid state track detectors, crystallographic reflection patterns.

1992OG01      J.Phys.(London) G18, 393 (1992)

Yu.Ts.Oganessian, S.A.Karamian, Y.P.Gangrsky, B.Gorski, B.N.Markov, Z.Szeglowski, Ch.Briancon, D.Ledu, R.Meunier, M.Hussonnois, O.Constantinescu, M.I.Subbotin

Production, Chemical and Isotopic Separations of the Long-Lived Isomer ^178m2Hf (T_1/2 = 31 Years)

NUCLEAR REACTIONS, ICPND ¹⁷⁶Yb(α, 2n), E ≈ 20-45 MeV; measured σ(E) for residual ground, isomer states production, Eγ, Iγ; deduced optimum conditions for ^178mHf production. Chemical, isotopic separation, enriched ¹⁷⁶Yb target.

doi: 10.1088/0954-3899/18/2/019
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF1359.

1988BU28      Izv.Akad.Nauk SSSR, Ser.Fiz. 52, 2189 (1988); Bull.Acad.Sci.USSR, Phys.Ser. 52, No.11, 109 (1988)

V.N.Bugrov, F.E.Epifanenkov, S.A.Karamyan

Reaction (²⁰Ne, α) and (⁴⁰Ar, α) at Monocrystalline Germanium Target

NUCLEAR REACTIONS Ge(⁴⁰Ar, xα), E=220 MeV; Ge(²⁰Ne, xα), E=104 MeV; measured σ(θα); deduced various emission sources role.

1988KA43      Izv.Akad.Nauk SSSR, Ser.Fiz. 52, 2196 (1988); Bull.Acad.Sci.USSR, Phys.Ser. 52, No.11, 116 (1988)

S.A.Karamyan

Temperature of Spectrum and Duration of Particle Emission at a Nuclear Excitation Energy Above 1 MeV per Nucleon

NUCLEAR REACTIONS ²³²Th(¹²C, αF), (¹²C, pF), E=720 MeV; analyzed proton-, α-spectra in coincidence with fission fragment. ¹⁶⁵Ho(²⁰Ne, F), E=402 MeV; ²³²Th(¹²C, F), E=720 MeV; ¹⁶⁸Er(⁸⁶Kr, X), E=1020 MeV; ¹⁹⁷Au(⁵⁶Fe, F), (⁵⁶Fe, X), E=485 MeV; analyzed emitted particle multiplicity data; deduced spectrum temperature, particle emission duration.

1987KA38      Izv.Akad.Nauk SSSR, Ser.Fiz. 51, 1008 (1987); Bull.Acad.Sci.USSR, Phys.Ser. 51, No.5, 163 (1987)

S.A.Karamyan

Irreversible Transition from blocking to channeling for Ions Scattered on Monocrystal Ge

NUCLEAR REACTIONS Ge(⁴⁰Ar, ⁴⁰Ar), (²⁰Ne, ²⁰Ne), E=5 MeV/nucleon; measured σ(θ); deduced blocking to channeling irreversible transition. Monocrystal Ge target. Theoretical analyses.

1987KA46      Yad.Fiz. 46, 1338 (1987)

S.A.Karamyan

Measurement of Decay Duration of the Excited Product from Ne + Ge Inelastic Interaction

NUCLEAR REACTIONS Ge(²⁰Ne, X), (²²Ne, X), E=4-8 MeV/nucleon; measured product yield vs E, θ; deduced inelastic interaction time. Blocking technique.

1986BU21      Yad.Fiz. 44, 1389 (1986)

V.N.Bugrov, V.G.Vinogradov, S.A.Karamian

Measurement of Time Duration of the ²²Ne + ²³⁸U Nuclear Fission Reaction

NUCLEAR REACTIONS ²³⁸U(²²Ne, X), E=172 MeV; measured fragment yields, long T_1/2 fission component; deduced reaction duration time.

1986KA12      Yad.Fiz. 43, 534 (1986); Soviet J.Nucl.Phys. 43, 339 (1986)

S.A.Karamyan, V.N.Bugrov, N.I.Spiridonov

Fragment Angular Distribution and Duration of Nuclear Fission Reaction

NUCLEAR REACTIONS ²³⁸U(α, F), E=25, 35 MeV; ²³⁸U(¹²C, F), E=81, 90 MeV; ²³⁸U(²²Ne, F), E=175, 143, 125 MeV; measured fragment σ(θ); deduced fission mechanism. ²⁴²Pu, ²⁵⁰Cf, ²⁶⁰No deduced T_1/2 range.

1984BU32      Yad.Fiz. 40, 857 (1984)

V.N.Bugrov, S.A.Karamyan

Experimental Determination of Lifetime Components for W Fission by ¹⁶O Ions

NUCLEAR REACTIONS W, ¹⁸⁴W(¹⁶O, F), E=94.5-131 MeV; measured fission fragment yield vs E; deduced fission event time delay. Crystal blocking technique. Statistical model.

1984KA29      Yad.Fiz. 40, 347 (1984)

S.A.Karamyan

Neutron Spectra and Temperature of Excited Nuclei

NUCLEAR REACTIONS ¹⁶⁶Er(⁸⁶Kr, xn), E=1.02 GeV; ¹⁸¹Ta(²⁰Ne, xn), E=180 MeV; ¹⁶⁵Ho(⁵⁶Fe, xn), E=476 MeV; analyzed neutron spectra. Ag(¹²C, xn), E=81 MeV; Ag(¹⁶O, xn), E=135 MeV; Ag(²²Ne, xn), E=175 MeV; Ag(⁴⁰Ar, xn), E=295 MeV; analyzed σ(θ). ²⁰⁹Bi(α, np), (α, 2np), (α, 3np), E not given; calculated neutron emission probability; deduced nuclear temperature parameters. Cascade model.

1984KA40      Pisma Zh.Eksp.Teor.Fiz. 40, 196 (1984); JETP Lett.(USSR) 40, 959 (1984)

S.A.Karamyan

Observation of a Long-Lived Nuclear Quasimolecule in the ²⁰Ne + Ge System

NUCLEAR REACTIONS Ge(²⁰Ne, ²⁰Ne), (²⁰Ne, X), E=102 MeV; measured residuals recoil, blocking minima; deduced nuclear quasimolecule evidence.

1983KA36      Izv.Akad.Nauk SSSR, Ser.Fiz. 47, 2208 (1983)

S.A.Karamyan

Life Time of States in ²³⁶U and ²³⁹U and Statistical Calculation Parameter Determination

NUCLEAR REACTIONS ²³⁸U(n, γ), E ≈ 1-15 MeV; ²³⁵U(n, γ), E ≈ 0-15 MeV; calculated σ(E); deduced model parameters. Statistical calculation.

NUCLEAR STRUCTURE ^236,238U; calculated T_1/2; deduced model parameters. Statistical calculation.

1982BU06      Yad.Fiz. 35, 558 (1982)

V.N.Bugrov, S.A.Karamyan

Study of Time Components of Nuclear Fission Reactions ²³⁸U + ¹²C and W + ²²Ne

NUCLEAR REACTIONS, Fission ²³⁸U(¹²C, F), E=81 MeV; W(²²Ne, F), E=174 MeV; measured σ(fragment θ); deduced blocking minima, time delay.

1981BU07      Yad.Fiz. 33, 611 (1981)

V.N.Bugrov, V.V.Kamanin, S.A.Karamyan

Duration of ²³⁸U Fission Induced by ⁴He Ions

NUCLEAR REACTIONS, Fission ²³⁸U(α, F), E=23-35 MeV; measured σ(fragment θ); deduced blocking effect, delayed fission. Monocrystal UO₂ target.

1981BU19      Yad.Fiz. 34, 577 (1981)

V.N.Bugrov, S.A.Karamyan

Duration of ²³⁸U Fission Induced by ³He Ions

NUCLEAR REACTIONS, Fission ²³⁸U(³He, F), E=25, 31, 40, 47 MeV; measured σ(fragment θ); deduced fission time duration. Blocking effect, monocrystalline UO₂, target.

1981KA14      Yad.Fiz. 33, 978 (1981)

V.V.Kamanin, S.A.Karamyan

On the Description of Excitation Functions of (HI, xn) Reactions for Weakly Fissionable Compound Nuclei

NUCLEAR REACTIONS ⁷⁴Ge(⁸⁶Kr, xn), E=300-450 MeV; ¹¹⁸Sn(⁴⁰Ar, xn), E=150-240 MeV; ¹⁵²Sm(¹²C, 2n), E=69-78 MeV; ^150,148Nd(¹⁶O, xn), E=50-85 MeV; analyzed σ; deduced compound nuclear temperature, critical angular momentum.

1980KA06      Yad.Fiz. 31, 144 (1980); Sov.J.Nucl.Phys. 31, 76 (1980)

S.A.Karamyan

On Interpretation of Data on γ-Ray Multiplicity in Deep-Inelastic Reactions

NUCLEAR REACTIONS ^107,109Ag(⁸⁶Kr, X), E=618 MeV; Ag(²⁰Ne, X), E=175 MeV; analyzed γ-multiplicity data; deduced rupture associated reaction product angular momentum. Rotational motion of double nuclear system.

1979BO29      Yad.Fiz. 30, 593 (1979); Sov.J.Nucl.Phys. 30, 305 (1979)

B.Bochev, S.Iliev, R.Kalpakchieva, S.A.Karamyan, T.Kutsarova, E.Nadzhakov, T.Venkova

Feeding and Decay of High-Spin Levels of ¹⁵⁶Er and ¹⁶⁰Er in the Reactions ^120,124Sn(⁴⁰Ar, 4n)

NUCLEAR REACTIONS ^120,124Sn(⁴⁰Ar, 4nγ), E=140-200 MeV; measured Eγ, Iγ, Doppler recoil, T_1/2. ^156,160Er deduced B(E2), yrast levels. Thick target.

1979KA25      Yad.Fiz. 30, 990 (1979); Sov.J.Nucl.Phys. 30, 514 (1979)

S.A.Karamyan

Description of the Angular Distributions of Neutrons Produced in Heavy-Ion Reactions

NUCLEAR REACTIONS ¹⁴¹Pr, Ag, Mo, Ge, U(¹²C, xn), E=81 MeV; U, ¹⁴¹Pr, Ag, Mo, Ge(²²Ne, xn), E=175 MeV; Ag, Mo(¹⁶O, xn), E=135 MeV; Mo, Ag(⁴⁰Ar, xn), E=295 MeV; analyzed σ(θn); deduced neutron anisotropy dependence on compound nuclear fissibility.

1978AP01      Yad.Fiz. 28, 299 (1978); Sov.J.Nucl.Phys. 28, 151 (1978)

S.Apostolescu, V.N.Bugrov, P.Vertes, V.V.Kamanin, S.A.Karamyan, R.Macrin, Y.T.Oganesyan, M.Titirici

Measurement of the Lifetime of the Excited Compound Nucleus in the Reaction ²³⁸U(³He, f) by Means of the Blocking Effect

NUCLEAR REACTIONS ²³⁸U(³He, F), E=33 MeV; measured shadow effect in intensity of reaction products. ²⁴¹Pu level deduced E, T_1/2. Crystal UO₂ target, blocking effect technique.

1978BU23      Yad.Fiz. 28, 303 (1978); Sov.J.Nucl.Phys. 28, 153 (1978)

V.N.Bugrov, V.V.Kamanin, S.A.Karamyan, S.P.Tretyakova

Measurement of the Time Duration of the Nuclear Reaction ²³⁸U(¹⁷Al, f)

NUCLEAR REACTIONS ²³⁸U(²⁷Al, X), E=169, 190, 227 MeV; measured shadow effect. ²⁶⁵Db levels deduced T_1/2. Crystal UO₂ target, blocking technique.

1977BO14      Nucl.Phys. A282, 159 (1977)

B.Bochev, S.Iliev, R.Kalpakchieva, S.A.Karamian, T.Kutsarova, E.Nadjakov, T.Venkova

Feeding and Lifetimes of Yrast Levels in Hf Nuclei

NUCLEAR REACTIONS ^122,124Sn(⁴⁸Ti, 4n), (⁵⁰Ti, 4n), E=195, 198 MeV; measured recoil distance, DSA, Iγ. ^166,168,170Hf levels deduced T_1/2, retardation factors in backbending region, quadrupole moment, deformation β, hed targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(77)90177-4
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1977BU13      Yad.Fiz. 25, 713 (1977); Sov.J.Nucl.Phys. 25, 379 (1977)

V.N.Bugrov, V.V.Kamanin, S.A.Karamyan, Y.T.Oganesyan, M.Titirici

Measurement of the Effective Widths of Excited States of Heavy Nuclei (Z = 98, 100, 102) by Means of the Blocking Effect

NUCLEAR REACTIONS ²³⁸U(¹²C, F), E=81 MeV; ²³⁸U(¹⁸O, F), E=108, 121 MeV; ²³⁸U(²²Ne, F), E=128, 176 MeV; measured fragment (θ) from UO₂ crystal for different crystal orientation; deduced T_1/2 limit for compound system.

1977KA27      Yad.Fiz. 26, 1166 (1977); Sov.J.Nucl.Phys. 26, 616 (1977)

V.V.Kamanin, S.A.Karamyan

Lifetimes of Compound Nuclei and Fission Probabilities Calculated with Allowance for Fission after Neutron Evaporation

NUCLEAR REACTIONS ¹⁸⁶W(¹²C, F), ¹⁸¹Ta, ¹⁸⁶W(¹⁶O, F), (²⁰Ne, F), (³¹P, F); calculated T_1/2, fission probabilities of compound systems.

1977KA29      Yad.Fiz. 26, 740 (1977); Sov.J.Nucl.Phys. 26, 390 (1977)

S.A.Karamyan

Thermodynamic Functions of Nuclei

NUCLEAR STRUCTURE ¹⁴⁹Eu, ¹⁷⁵Ta, ¹⁹¹Au; calculated thermodynamic functions.

1976BO22      Yad.Fiz. 23, 520 (1976); Sov.J.Nucl.Phys. 23, 274 (1976)

B.Bochev, S.A.Karamyan, T.Kutsarova, Y.T.Oganesyan

Systematics of Intensities and Population Times for Rotational Bands in Reactions of Compound-Nucleus Formation Induced by Heavy Ions

NUCLEAR REACTIONS ¹⁶⁴Dy(α, 4n), ¹⁵⁵Gd(α, 3n), ¹⁴⁸Nd(¹²C, 4n), 118, 120sn(¹⁶O, 4n), ¹⁵⁴Sm(²⁰Ne, 4n), ¹¹⁵In(¹⁹F, 4n), ¹⁵⁴Sm(²⁸Si, 4n), ¹³⁰Te(³²S, 4n), ^124,128,130Te(⁴⁰Ar, 4n); analyzed, systematized intensities, feeding times to high spin levels in ^130,132,134Ce, ^156,158,160Er, ^{160,162,164,166}Yb, ^166,168,170Hf, ¹⁷⁸Os.

1976BO27      Nucl.Phys. A267, 344 (1976)

B.Bochev, S.A.Karamian, T.Kutsarova, E.Nadjakov, Y.T.Oganessian

The Feeding Times and Lifetimes of High-Spin Levels in Ytterbium Doubly Even Isotopes

NUCLEAR REACTIONS ^{124,126,128,130}Te(⁴⁰Ar, 4n), E=170-190 MeV; measured recoil distance Doppler-shift, Eγ. ^{160,162,164,166}Yb levels deduced T_1/2, retardation factors in backbending region, Q, β, B(E2). Enriched targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(76)90665-5
Citations: PlumX Metrics

1976BO30      Yad.Fiz. 23, 929 (1976); Sov.J.Nucl.Phys. 23, 489 (1977)

B.Bochev, S.Iliev, R.Kalpakchieva, S.A.Karamyan, T.Kutsarova

Lifetimes of High-Spin Rotational States of the Isotope ¹⁶⁴Yb, Measured by the Doppler-Effect Method in Recoil Nuclei

NUCLEAR REACTIONS ¹²⁸Te(⁴⁰Ar, 4nγ), E=190 MeV; measured DSA. ¹⁶⁴Yb levels deduced T_1/2, side-feeding times, B(E2).

1975BO50      Yad.Fiz. 22, 665 (1975); Sov.J.Nucl.Phys. 22, 343 (1975)

B.Bochev, S.A.Karamyan, T.Kutsarova, V.G.Subbotin

Lifetimes of Rotational Levels of ¹⁶⁰Yb

NUCLEAR REACTIONS ¹²⁴Te(⁴⁰Ar, 4nγ), E=184 MeV; measured σ(Eγ), recoil distance DSA. ¹⁶⁰Yb levels deduced T_1/2, B(E2).

1972BO04      Compt.Rend.Acad.Bulg.Sci. 25, 905 (1972)

B.Bochev, S.A.Karamian, T.Kutsarova, E.Nadjakov, V.G.Soubotin, Y.Ouhrin, V.A.Chougreev

Apparatus for Nuclear Level Lifetime Measurements by the Recoil-Distance Doppler-Shift Method

NUCLEAR REACTIONS ¹²⁴Sn(⁴⁰Ar, 4nγ); measured DSA. ¹⁶⁰Er levels deduced T_1/2.

1972BO32      Yad.Fiz. 16, 633 (1972); Sov.J.Nucl.Phys. 16, 355 (1973)

B.Bochev, S.A.Karamyan, T.Kutsarova, Y.Ukhrin, E.Nadzhakov, T.Venkova, R.Kalpakchieva

Lifetimes of the Rotational Levels of Yb¹⁶⁴ Measured by the Doppler Effect in the Recoil Nuclei

NUCLEAR REACTIONS ¹²⁸Te(⁴⁰Ar, 4n); measured DSA. ¹⁶⁴Yb level deduced T_1/2, B(E2).

1972BO61      Phys.Scr. 6, 243 (1972)

B.Bochev, S.A.Karamian, T.Kutsarova, E.Nadjakov, T.Venkova, R.Kalpakchieva

Lifetimes of Rotational States in ¹⁶⁴Yb and ¹⁶²Yb

NUCLEAR REACTIONS ^126,128Te(⁴⁰Ar, 4nγ); measured Doppler shift. ^162,164Yb levels deduced T_1/2.

doi: 10.1088/0031-8949/6/5-6/006
Citations: PlumX Metrics

1972FL05      JINR-P7-6262 (1972)

G.N.Flerov, S.A.Karamyan, Y.E.Penionzhkevich, S.P.Tretyakova, I.A.Shelaev

Some Experiments to Study the Interaction of Accelerated Xe Ions with Nuclei

1972FL09      Yad.Fiz. 15, 1117 (1972); Sov.J.Nucl.Phys. 15, 618 (1972)

G.N.Flerov, S.A.Karamyan, G.S.Popeko, A.G.Popeko, I.A.Shelaev

Compound Nucleus Production by Accelerated Xenon Ions

RADIOACTIVITY ^151,152,153Tb, ¹⁵²Dy; measured T_1/2, Eγ, Iγ.

NUCLEAR REACTIONS ²⁴Mg(¹³²Xe, xnγ), E=640 MeV; measured σ(Eγ).

1972IL02      Yad.Fiz. 16, 465 (1972); Sov.J.Nucl.Phys. 16, 260 (1973)

A.S.Ilinov, S.A.Karamyan, Nguyen Tack An, K.N.Sharifov

Angular Distribution of Neutrons Produced by Irradiating Ge, Mo, Ag, and Pr Targets with Heavy Ions of C, O, Ne and Ar

NUCLEAR REACTIONS Ge, Mo, Ag, Pr(¹²C, xn), (¹⁶O, xn), (²²Ne, xn), (⁴⁰Ar, xn); measured σ(En, θ(n)); deduced reaction mechanism.

1972KA18      Yad.Fiz. 15, 435 (1972); Sov.J.Nucl.Phys. 15, 244 (1972)

S.A.Karamyan, Nguyen Tak An, K.N.Sharifov

Energy Balance in Fission by Heavy Ions

NUCLEAR REACTIONS, Fission ²⁰⁹Bi, ¹⁹⁷Au, ²³⁸U(α, F), (¹²C, F), (¹⁶O, F), (²²Ne, F), (⁴⁰Ar, F), E=52-295 MeV; measured average prompt neutron number;calculated energy balance.

1972KA40      Yad.Fiz. 16, 252 (1972); Sov.J.Nucl.Phys. 16, 140 (1973)

V.V.Kamanin, S.A.Karamyan, A.M.Kucher, F.Normuratov, Y.T.Oganesyan

Measurement of Compound-Nucleus Lifetime by Means of the Shadow Effect

1972KA49      Yad.Fiz. 16, 447 (1972); Sov.J.Nucl.Phys. 16, 249 (1973)

V.V.Kamanin, S.A.Karamyan, F.Normuratov, S.P.Tretyakova

Lifetimes of Excited Compound Nuclei in the Range 79 < Z < 89, Measured by Means of the Shadow Effect

NUCLEAR REACTIONS ¹⁸¹Ta, ¹⁸⁶W(¹¹B, X), (¹²C, X), (¹⁶O, X), (²²Ne, X), (³¹P, X), E=87-195 MeV; measured shadow effect in monocrystals; deduced compound-nucleus T_1/2.

1972KA64      Dokl.Akad.Nauk Tadzh.SSR 15, No.8, 21 (1972)

S.A.Karamyan, K.N.Sharifov, V.G.Gafurov, Y.T.Oganesyan

Angular Distribution of Neutrons during the Interaction of Heavy Ions with Nuclei of ¹⁹⁷Au, ²⁰⁹Bi and ²³⁸U

NUCLEAR REACTIONS, Fission ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(¹²C, F), (¹⁶O, F), (²²Ne, F), (⁴⁰Ar, F); measured fragment(θ).

1971KA11      Yad.Fiz. 13, 944 (1971); Sov.J.Nucl.Phys. 13, 543 (1971)

S.A.Karamyan, Y.V.Melikov, F.Normuratov, O.Otgonsuren, G.M.Soloveva

Estimate of the Lifetime of Excited Compound Nucleus in Reaction W(Ne²², f) (Experiment)

NUCLEAR REACTIONS, Fission W(²²Ne, F), E=98, 174 MeV; measured θ(fragment) in monocrystals; deduced compound-nucleus T_1/2.

1971KA19      JINR-P7-5843 (1971)

S.A.Karamian, T.A.Nguyen, K.N.Sharifov

Energy Balance of the Reaction of Nucleus Fission by Heavy Ions

NUCLEAR REACTIONS, Fission ²⁰⁹Bi(α, F), E=52 MeV; ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(¹⁶O, F), E=135 MeV; ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(⁴⁰Ar, F), E=295 MeV; ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(²²Ne, F), E=175 MeV; ²⁰⁹Bi, ²³⁸U(¹²C, F), E=81 MeV; measured prompt neutron numbers; calculated total energy balance.

1971KA27      Yad.Fiz. 14, 499 (1971); Sov.J.Nucl.Phys. 14, 279 (1972)

S.A.Karamyan, Y.T.Oganesyan, F.Normuratov

Experiments on Measurement of the Compound-Nucleus Lifetime in the Reaction W(Ne²², f)

NUCLEAR REACTIONS W(²²Ne, F), E=115-174 MeV; measured fragment(θ) in W monocrystal; deduced compound-nucleus T_1/2.

1970KA19      Yad.Fiz. 11, 304 (1970); Sov.J.Nucl.Phys. 11, 170 (1970)

S.A.Karamyan, Y.T.Oganesyan, K.N.Sharifov

Measurement of the Number of Neutrons from Fission of Nuclei by Heavy Ions

NUCLEAR REACTIONS ¹⁹⁷Au, ²⁰⁹Bi(¹⁶O, F), E=134 MeV; ¹⁹⁷Au, ²⁰⁹Bi, ²³⁸U(²²Ne, F), E=183 MeV; ²⁰⁹Bi(⁴⁰Ar, F), E=302 MeV; measured average fission neutron number.

1969KA11      Yadern.Fiz. 9, 715 (1969); Soviet J.Nucl.Phys. 9, 414 (1969)

S.A.Karamyan, Y.T.Oganesyan, Y.E.Penionzhkevich, B.I.Pustylnik

Charge and Isotopic Distributions of Fission Fragments from Excited Nuclei in Reactions with Heavy Ions

NUCLEAR REACTIONS, Fission ²³⁸U(¹²C, F), (²⁰Ne, F), (⁴⁰Ar, F), E = 7- 9 MeV / nucleon; measured fragment charge, mass distributions.

1968KA29      Yadern.Fiz. 8, 690 (1968); Soviet J.Nucl.Phys. 8, 401 (1969)

S.A.Karamyan, F.Normuratov, Y.T.Oganesyan, Y.E.Penionzhkevich, B.I.Pustylnik, G.N.Flerov

Fragment-Mass Distribution from Heavy-Ion Fission of Bismuth and Uranium

NUCLEAR REACTIONS, Fission ²⁰⁹Bi, ²³⁸U(²⁰Ne, F), ²³⁸U(⁴⁰Ar, F), E not given; measured fission fragment Eγ, mass distribution. Ge(Li) detector.

Note: The following list of authors and aliases matches the search parameter S.A.Karamian: S.A.KARAMIAN, S.A.KARAMYAN