NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = S.Karamyan Found 99 matches. 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
2016SE01 J.Phys.(London) G43, 015103 (2016) J.Sethi, R.Palit, J.J.Carroll, S.Karamian, S.Saha, S.Biswas, Z.Naik, T.Trivedi, M.S.Litz, P.Datta, S.Chattopadhyay, R.Donthi, U.Garg, S.Jadhav, H.C.Jain, S.Kumar, D.Mehta, B.S.Naidu, G.H.Bhat, J.A.Sheikh, S.Sihotra, P.M.Walker Low-lying states near the Iπ = 6+ isomer in 108Ag NUCLEAR REACTIONS 100Mo(11B, 3n), E=39 MeV; measured reaction products, Eγ, Iγ, γ-γ-coinc.; deduced σ(θ), σ, energy levels, J, π, γ-ray intensities. Comparison with projected Hartree-Fock calculations.
doi: 10.1088/0954-3899/43/1/015103
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
2015SE06 Acta Phys.Pol. B46, 703 (2015) J.Sethi, R.Palit, J.J.Carroll, S.Karamian, S.Saha, S.Biswas, Z.Naik, T.Trivedi, M.S.Litz, P.Datta, S.Chattopadhyay, R.Donthi, U.Garg, S.Jadhav, H.C.Jain, S.Kumar, D.Mehta, B.S.Naidu, G.H.Bhat, J.A.Sheikh, S.Sihotra, P.M.Walker Spectroscopy of the Low-lying States Near the High Spin Isomer in 108Ag NUCLEAR REACTIONS 100Mo(11B, 3n), E=39 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, γ-ray intensities, branching ratios.
doi: 10.5506/APhysPolB.46.703
2014KA53 Phys.Atomic Nuclei 77, 1429 (2014); Yad.Fiz. 77, 1496 (2014) 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
2013SE12 Phys.Lett. B 725, 85 (2013) J.Sethi, R.Palit, S.Saha, T.Trivedi, G.H.Bhat, J.A.Sheikh, P.Datta, J.J.Carroll, S.Chattopadhyay, R.Donthi, U.Garg, S.Jadhav, H.C.Jain, S.Karamian, S.Kumar, M.S.Litz, D.Mehta, B.S.Naidu, Z.Naik, S.Sihotra, P.M.Walker Structure of nearly degenerate dipole bands in 108Ag NUCLEAR REACTIONS 100Mo(11B, 3n), E=39 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced level energies, J, π, B(M1), B(M1)/B(E2), high spin negative parity states. Comparison with microscopic triaxial projected shell model approach calculations.
doi: 10.1016/j.physletb.2013.06.054
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
2012KA38 Phys.Atomic Nuclei 75, 1362 (2012) 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
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
2011KA06 Phys.Rev. C 83, 024604 (2011) Cross section for inelastic neutron "acceleration" by 178Hfm2 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
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
2011KA41 Phys.Atomic Nuclei 74, 1705 (2011) 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
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
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 178Hfm2 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
2009KA20 Phys.Atomic Nuclei 72, 938 (2009) Fission-to-spallation ratio and fission dynamics manifestation
doi: 10.1134/S1063778809060052
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
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
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
2007KA09 Phys.Atomic Nuclei 70, 205 (2007) 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
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 178Hfm2 isomer RADIOACTIVITY 178Hf(α); measured partial half lives and hindrance factors.
doi: 10.1103/PhysRevC.75.057301
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
2005KA52 Yad.Fiz. 68, 1827 (2005); Phys.Atomic Nuclei 68, 1765 (2005) 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
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
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
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 T1/2, fission probability vs energy, spin. Crystal blocking technique.
doi: 10.1140/epja/i2002-10139-0
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
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 178Hfm2 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
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
2002KA74 Hyperfine Interactions 143, 69 (2002) 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
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
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
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
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
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
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
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 180Tam 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
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 Kπ = 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
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 174,175,176,177,178Hf; analyzed isomeric states properties; deduced evidence for multiparticle isomer in 178Hf.
doi: 10.1023/A:1012080411476
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
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
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
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
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
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
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
1996LU07 Z.Phys. A355, 377 (1996) E.Lubkiewicz, H.J.Wollersheim, R.Kulessa, Ch.Briancon, W.Bruchle, O.Constantinescu, M.Debowski, E.Ditzel, H.Folger, J.Gerl, F.Hannachi, T.Happ, M.Hussonnois, E.Jager, S.Karamyan, M.Kaspar, Th.Kroll, Yu.Ts.Oganessian, I.Peter, H.Schaffner, S.Schremmer, R.Schubert, N.Trautmann, K.Vetter, G.Zauner Coulomb Excitation of the K(π) = 16+ Rotational Band in 178Hf NUCLEAR REACTIONS 176,177,179,178Hf(208Pb, 208Pb'), E=4.77 MeV/nucleon; measured Eγ, Iγ, (particle)(particle)γ-coin following Coulomb excitation. 178Hf deduced level, J, π, intrinsic quadrupole moment. Rigid rotor model. Stable Hf targets, 178Hf target in a high-spin isomeric state.
doi: 10.1007/s002180050125
1995KA25 Acta Phys.Pol. B26, 375 (1995) 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) (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) 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
1992KA32 Rev.Roum.Phys. 37, 227 (1992) 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 (T1/2 = 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
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) 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) 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) 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 T1/2 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 T1/2 range.
1984BU32 Yad.Fiz. 40, 857 (1984) 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) 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) 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) 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 T1/2; deduced model parameters. Statistical calculation.
1982BU06 Yad.Fiz. 35, 558 (1982) 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) 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) 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) 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, T1/2. 156,160Er deduced B(E2), yrast levels. Thick target.
1979KA25 Yad.Fiz. 30, 990 (1979); Sov.J.Nucl.Phys. 30, 514 (1979) 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, T1/2. 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 T1/2. 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 T1/2, retardation factors in backbending region, quadrupole moment, deformation β, hed targets. Ge(Li) detectors.
doi: 10.1016/0375-9474(77)90177-4
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 T1/2 limit for compound system.
1977KA27 Yad.Fiz. 26, 1166 (1977); Sov.J.Nucl.Phys. 26, 616 (1977) 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 T1/2, fission probabilities of compound systems.
1977KA29 Yad.Fiz. 26, 740 (1977); Sov.J.Nucl.Phys. 26, 390 (1977) 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, 160,162,164,166Yb, 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 124,126,128,130Te(40Ar, 4n), E=170-190 MeV; measured recoil distance Doppler-shift, Eγ. 160,162,164,166Yb levels deduced T1/2, retardation factors in backbending region, Q, β, B(E2). Enriched targets. Ge(Li) detectors.
doi: 10.1016/0375-9474(76)90665-5
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 T1/2, 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 T1/2, 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 T1/2.
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 T1/2, 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 T1/2.
doi: 10.1088/0031-8949/6/5-6/006
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 T1/2, 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 T1/2.
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 T1/2.
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 T1/2.
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.
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