Nuclear Science References (NSR)

RADIOACTIVITY ²⁵²Cf(SF); measured mass-mass distribution of fission fragments, velocities and energies of the ternary events, neutron multiplicity; deduced masses, energies and yields of fragments from true ternary fission. Results explained by collinear cluster tri-partition (CCT), giving rise to the Ni bump.

doi: 10.1103/PhysRevC.96.064606
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2012PY01 Eur.Phys.J. A 48, 94 (2012)

Yu.V.Pyatkov, D.V.Kamanin, W.von Oertzen, A.A.Alexandrov, I.A.Alexandrova, O.V.Falomkina, N.Jacobs, N.A.Kondratjev, E.A.Kuznetsova, Yu.E.Lavrova, V.Malaza, Yu.V.Ryabov, O.V.Strekalovsky, A.N.Tyukavkin, V.E.Zhuchko

The collinear cluster tri-partition (CCT) of ²⁵²Cf (sf): New aspects from neutron gated data

RADIOACTIVITY ²⁵²Cf(SF); measured En, In, fission fragments, (fragment)n-coin; deduced neutron multiplicity, fission fragment mass distribution, CCT (collinear cluster tri-partition ).

doi: 10.1140/epja/i2012-12094-5
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2011PY01 Int.J.Mod.Phys. E20, 1008 (2011)

Yu.V.Pyatkov, D.V.Kamanin, A.A.Alexandrov, I.A.Alexandrova, N.A.Kondratyev, E.A.Kuznetsova, N.Jacobs, V.Malaza, D.Pham Minh, V.E.Zhuchko

Presumable scenario of one of the collinear cluster tri-partition modes

doi: 10.1142/S0218301311019155
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2010PY01 Phys.Atomic Nuclei 73, 1309 (2010); Yad.Fiz. 73, 1350 (2010)

Yu.V.Pyatkov, D.V.Kamanin, Yu.N.Kopach, A.A.Alexandrov, I.A.Alexandrova, S.B.Borzakov, Yu.N.Voronov, V.E.Zhuchko, E.A.Kuznetsova, Ts.Panteleev, A.N.Tyukavkin

Collinear cluster tripartition channel in the reaction ²³⁵U(n_th, f)

NUCLEAR REACTIONS ²³⁵U(n, F), E=thermal; measured reaction products, TOF; deduced charge spectrum and mass-mass distribution of fission fragments, many body ternary decay.

doi: 10.1134/S1063778810080041
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2010PY02 Eur.Phys.J. A 45, 29 (2010)

Yu.V.Pyatkov, D.V.Kamanin, W.von Oertzen, A.A.Alexandrov, I.A.Alexandrova, O.V.Falomkina, N.A.Kondratjev, Yu.N.Kopatch, E.A.Kuznetsova, Yu.E.Lavrova, A.N.Tyukavkin, W.Trzaska, V.E.Zhuhcko

Collinear cluster tri-partition of ²⁵²Cf (sf) and in the ²³⁵U (n_th, f) reaction

RADIOACTIVITY ²⁵²Cf(SF); measured E(fragment), I(fragment, θ), (fragment)(fragment)-coin from fission; deduced fission fragment mass correlations.

NUCLEAR REACTIONS ²³⁵U(n, F), E=thermal; measured E(fragment), I(fragment, θ), (fragment)(fragment)-coin, fission fragment yields; deduced fission fragment mass correlations, ternary cluster decay.

doi: 10.1140/epja/i2010-10988-8
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2006RU10 Phys.Atomic Nuclei 69, 1388 (2006)

V.A.Rubchenya, A.A.Alexandrov, S.V.Khlebnikov, V.G.Lyapin, V.A.Maslov, Yu.E.Penionzhkevich, G.Prete, Yu.G.Sobolev, G.P.Tyurin, W.H.Trzaska, D.N.Vakhtin, E.Vardaci

Light Particle Accompanied Quasifission in Superheavy Composite Systems

NUCLEAR REACTIONS ²⁰⁸Pb(⁸⁶Kr, pX), (⁸⁶Kr, αX), E=500, 600 MeV; measured Ep, Eα, σ(E, θ), heavy fragment energy and mass distributions; deduced α-particle accompanied quasifission.

doi: 10.1134/S1063778806080175
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2003PY01 Yad.Fiz. 66, 1679 (2003); Phys.Atomic Nuclei 66, 1631 (2003)

Yu.V.Pyatkov, D.V.Kamanin, A.A.Alexandrov, I.A.Alexandrova, S.V.Khlebnikov, S.V.Mitrofanov, V.V.Pashkevich, Yu.E.Penionzhkevich, Yu.V.Ryabov, E.A.Sokol, V.G.Tishchenko, A.N.Tyukavkin, A.V.Unzhakova, S.R.Yamaletdinov

New Indications of Collinear Tripartition in ²⁵²Cf(sf) Studied at the Modified FOBOS Setup

RADIOACTIVITY ²⁵²Cf(SF); measured fission fragment energy, charge, and mass distributions, neutron multiplicity; deduced possible collinear tripartition.

doi: 10.1134/1.1611571
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2003RU07 Yad.Fiz. 66, 1500 (2003); Phys.Atomic Nuclei 66, 1454 (2003)

V.A.Rubchenya, A.A.Alexandrov, S.V.Khlebnikov, V.G.Lyapin, V.A.Maslov, Yu.E.Penionzhkevich, G.Prete, Yu.V.Pyatkov, Yu.G.Sobolev, G.P.Tiourin, W.H.Trzaska, D.N.Vakhtin, J.Aysto

Dynamics of Superheavy System ⁸⁶Kr + ²⁰⁸Pb Reaction

NUCLEAR REACTIONS ²⁰⁸Pb(⁸⁶Kr, X), E=600 MeV/nucleon; measured fragments kinetic energy and mass distributions, α spectra, pre- and post-scission neutron multiplicity; deduced reaction mechanism features.

doi: 10.1134/1.1601750
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2002RU04 Yad.Fiz. 65, 729 (2002); Phys.Atomic Nuclei 65, 697 (2002)

V.A.Rubchenya, W.H.Trzaska, J.Aysto, A.A.Alexandrov, I.D.Alkhazov, K.-T.Brinkmann, A.Evsenin, S.V.Khlebnikov, A.V.Kuznetsov, V.G.Lyapin, M.Mutterer, Yu.E.Penionzhkevich, O.I.Osetrov, Z.Radivojevic, Yu.G.Sobolev, G.P.Tyurin, D.N.Vakhtin

Inelastic Deuteron Breakup Followed by Fission at Intermediate Energy

NUCLEAR REACTIONS ²³⁸U(d, F), (d, pF), (d, nF), E=65 MeV; measured proton spectra, neutron spectra, fission fragment mass distributions; deduced reaction mechanism features. Comparison with model predictions.

doi: 10.1134/1.1471276
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2001PY01 Eur.Phys.J. A 10, 171 (2001)

Yu.V.Pyatkov, Yu.E.Penionzhkevich, W.H.Trzaska, O.I.Osetrov, A.A.Alexandrov, I.A.Alexandrova, J.Aysto, K.-Th.Brinkmann, S.V.Khlebnikov, V.F.Kushniruk, A.V.Kuznetsov, V.G.Lyapin, V.A.Maslov, M.Mutterer, Z.Radivojevic, V.A.Rubchenya, Yu.G.Sobolev, G.P.Tiourin, D.N.Vakhtin

Peculiarities in Fragment Mass Distribution in the ²³⁸U + ⁴⁰Ar (243 MeV) Reaction

NUCLEAR REACTIONS ²³⁸U(⁴⁰Ar, X), E=243 MeV; measured fragments mass distributions, kinetic energies, neutron spectra; deduced fine structure in mass distribution.

doi: 10.1007/s100500170129
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2001RU07 Nucl.Instrum.Methods Phys.Res. A463, 653 (2001)

V.A.Rubchenya, W.H.Trzaska, D.N.Vakhtin, J.Aysto, P.Dendooven, S.Hankonen, A.Jokinen, Z.Radivojevic, J.C.Wang, I.D.Alkhazov, A.V.Evsenin, S.V.Khlebnikov, A.V.Kuznetsov, V.G.Lyapin, O.I.Osetrov, G.P.Tiourin, A.A.Aleksandrov, Yu.E.Penionzhkevich

Neutron and Fragment Yields in Proton-Induced Fission of ²³⁸U at Intermediate Energies

NUCLEAR REACTIONS ²³⁸U(p, F), E=20, 35, 50, 60 MeV; measured fission fragments kinetic energy, mass distributions, neutron multiplicities; deduced fission mechanism features. Time-dependent statistical model.

doi: 10.1016/S0168-9002(01)00176-0
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0941.

1999OS03 Bull.Rus.Acad.Sci.Phys. 63, 174 (1999)

O.I.Osetrov, A.A.Aleksandrov, I.D.Alkhazov, J.Aysto, D.N.Vakhtin, J.von Kalben, A.V.Kuznetsov, V.G.Lyapin, M.Mutterer, H.-G.Ortlepp, Yu.E.Penionzhkevich, Yu.V.Pyatkov, V.A.Rubchenya, G.P.Tyurin, W.Trzaska, S.V.Khlebnikov

Multiplicities of α Particles in ⁵⁸Ni + ^{112, 118, 124}Sn Reactions at E_Ni = 340 MeV

NUCLEAR REACTIONS ^112,118,124Sn(⁵⁸Ni, F), E=340 MeV; measured σ(Eα, θ), (Fragment)α-coin following fission; deduced α-particles Coulomb barriers, pre- and post-scission multiplicities. Statistical Model Calculations.

1999TR02 Acta Phys.Slovaca 49, 93 (1999)

W.H.Trzaska, J.Aysto, Z.Radivojevic, V.A.Rubchenya, I.D.Alkhazov, S.V.Khlebnikov, A.V.Kuznetsov, A.Evsenin, V.G.Lyapin, O.I.Osetrov, G.P.Tiourin, D.N.Vakhtin, A.A.Alexandrov, Yu.E.Penionzhkevich, Yu.V.Pyatkov, Yu.G.Sobolev, M.Mutterer, J.von Kalben, K.Brinkmann

Particle Emission as a Probe for Dynamics of Fission of Heated Nuclei

NUCLEAR REACTIONS ¹²⁴Sn(⁵⁸Ni, X), E=320 MeV; ¹⁴²Nd(⁴⁰Ar, X), E=243 MeV; ¹⁶²Er(²⁰Ne, X), E=160 MeV; measured neutron, proton, α multiplicities; deduced fusion-fission reaction mechanism features. ²³⁸U(p, F), E=20, 35, 50, 60 MeV; measured fission fragment yields, neutron multiplicity vs fragment mass.

1999VA15 Bull.Rus.Acad.Sci.Phys. 63, 177 (1999)

D.N.Vakhtin, A.A.Aleksandrov, I.D.Alkhazov, J.Aysto, A.V.Kuznetsov, V.G.Lyapin, O.I.Osetrov, H.-G.Ortlepp, Yu.E.Penionzhkevich, Yu.V.Pyatkov, V.A.Rubchenya, G.P.Tyurin, S.V.Khlebnikov, W.Trzaska

Neutron Emission in the ⁴⁰Ar + ¹⁸⁰Hf Reaction at E_lab = 180, 190, 216, and 249 MeV

NUCLEAR REACTIONS ¹⁸⁰Hf(⁴⁰Ar, F), E=180-249 MeV; measured σ(En, θ), (fragment)n-coin following fission. Deduced nuclear temperatures and pre- and post-scission multiplicities. Statistical Model Calculations.

1998AY02 Yad.Fiz. 61, No 12, 2135 (1998); Phys.Atomic Nuclei 61, 2024 (1998)

J.Aysto, W.H.Trzaska, I.A.Kukushkin, V.E.Makarenko, Yu.D.Molchanov, G.A.Otroshchenko, D.N.Vakhtin, V.T.Lyapin, O.I.Osetrov, G.P.Tyurin, S.V.Khlebnikov, A.A.Aleksandrov, M.Mutterer, J.von Kalben

Ternary Fission in ⁴He + ²³⁸U Interaction

NUCLEAR REACTIONS ²³⁸U(α, F), E=24 MeV; measured fission fragments yields, light charged particles spectra; deduced ternary fission probability. Comparison with spontaneous fission, n-, γ-induced fission.

RADIOACTIVITY ²⁵²Cf(SF); measured α spectra.

1998RU05 Phys.Rev. C58, 1587 (1998)

V.A.Rubchenya, A.V.Kuznetsov, W.H.Trzaska, D.N.Vakhtin, A.A.Alexandrov, I.D.Alkhazov, J.Aysto, S.V.Khlebnikov, V.G.Lyapin, O.I.Osetrov, Yu. E.Penionzhkevich, Yu.V.Pyatkov, G.P.Tiourin

Fission Time Scale and Viscosity for Compound Nucleus ²²⁰Th Formed in Reaction ⁴⁰Ar + ¹⁸⁰Hf at E_lab =180, 190, 216, and 249 MeV

NUCLEAR REACTIONS ¹⁸⁰Hf(⁴⁰Ar, F), E=180, 190, 216, 249 MeV; measured neutron spectra, (fragment)(neutron)-coin, fragment mass, energy distributions; deduced pre-, postscission neutron multiplicities. Time-dependent statistical model analysis. Time-of-flight technique.

doi: 10.1103/PhysRevC.58.1587
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1998TR07 Bull.Rus.Acad.Sci.Phys. 62, 830 (1998)

W.Trzaska, A.A.Aleksandrov, I.D.Alkhazov, J.Aysto, D.N.Vakhtin, A.V.Kuznetsov, V.G.Lyapin, V.Makarenko, M.Mutterer, H.-G.Ortlepp, O.L.Osetrov, Yu.E.Penionzhkevich, Yu.V.Pyatkov, V.A.Rubchenya, G.P.Tyurin, S.V.Khlebnikov

Nuclear Fusion-Fission Reaction Dynamics at HENDES

1998TR08 Nuovo Cim. 111A, 1055 (1998)

W.H.Trzaska, V.A.Rubchenya, J.Aysto, Z.Radivojevic, D.N.Vakhtin, I.D.Alkhazov, A.Evsenin, S.V.Khlebnikov, A.V.Kuznetsov, V.G.Lyapin, O.I.Osetrov, G.P.Tiourin, A.A.Alexandrov, Yu.E.Penionzhkevich, Yu.G.Sobolev, M.Mutterer

Fragment Mass Distribution in Superasymmetric Region in Proton-Induced Fission of U and Th

NUCLEAR REACTIONS ²³⁸U(p, F), E=20, 35, 50, 65 MeV; ²³²Th(p, F), E=50, 60 MeV; measured fission fragment mass yields, neutron multiplicities; deduced asymmetric mass distribution enhancement.

doi: 10.1007/BF03035992
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1285.

1997TR06 Acta Phys.Pol. B28, 443 (1997)

W.H.Trzaska, V.A.Rubchenya, A.A.Alexandrov, I.D.Alkhazov, J.Aysto, J.von Kalben, S.V.Khlebnikov, A.V.Kuznetsov, V.G.Lyapin, V.E.Makarenko, I.Moltchanov, M.Mutterer, O.I.Osetrov, H.-G.Ortlepp, G.Otroshchenko, Yu.E.Penionzhkevich, Yu.V.Pyatkov, G.P.Tiourin, D.N.Vakhtin

Research on Fission Dynamics at JYFL using HENDES - High Efficiency Neutron Detection System

1995AL05 Nucl.Phys. A583, 465c (1995)

A.A.Aleksandrov, I.A.Aleksandrova, M.Andrassy, L.Dietterle, V.N.Doronin, P.Gippner, C.-M.Herbach, D.Hilscher, S.I.Ivanovsky, A.Matthies, D.May, H.-G.Ortlepp, G.Pausch, Yu.E.Penionzhkevich, V.N.Pokrovsky, G.Renz, K.-D.Schilling, D.I.Shishkin, V.E.Shuchko, O.V.Strekalovsky, V.V.Trofimov, and the FOBOS Collaboration

First Experiments with FOBOS

NUCLEAR REACTIONS ²³²Th(⁷Li, X), E=43 MeV/nucleon; measured fission (fragment)(intermediate mass fragment)-coin. Position sensitive avalanche counter, BRAGG ionization chamber, CsI scintillation counter assembly, fission following incomplete fusion.

doi: 10.1016/0375-9474(94)00706-S
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1994AL44 Yad.Fiz. 57, No 12, 2137 (1994); Phys.Atomic Nuclei 57, 2057 (1994)

A.A.Aleksandrov, I.A.Aleksandrova, S.L.Podshibyakin, Yu.V.Pyatkov, A.I.Slyusarenko, A.N.Shemetov, R.A.Shekhmametev

Mass-Energy Spectra of Fission Fragments in the Reaction ^242mAm(n(th), f)

NUCLEAR REACTIONS ²⁴²Am(n, F), E=thermal; measured fission fragment mass, energy spectra; deduced agreement with radiochemical data. Tof technique, target in isomeric state.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41496.

1992AL08 Nucl.Instrum.Methods Phys.Res. A312, 542 (1992)

A.A.Alexandrov, I.A.Alexandrova, S.L.Podshibyakin, Yu.V.Pyatkov, A.I.Slyusarenko, A.N.Shemetov, V.L.Gaishan, V.I.Kogan, V.P.Pikul

Study of the Surface-Barrier Semiconductor Detector Response to the Fission Fragments in Channeling Mode

NUCLEAR REACTIONS ²³⁹Pu(n, F), E=thermal; measured fission fragment spectra, mass, charge, energy separation; deduced detector mass, energy response. Surface-barrier semi-conductor detector.

doi: 10.1016/0168-9002(92)90202-F
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1991AL21 Nucl.Instrum.Methods Phys.Res. A303, 323 (1991)

A.A.Alexandrov, I.A.Alexandrova, A.V.Ermolenko, Yu.A.Korjuk, D.S.Nikulin, Yu.F.Pevchev, S.L.Podshibyakin, Yu.V.Pyatkov, S.I.Sitnikov, A.I.Slyusarenko, A.N.Shemetov, R.A.Shehmametiev, N.N.Demidovich

A Time-of-Flight Spectrometer for Unslowed Fission Fragments

NUCLEAR REACTIONS ²³⁵U(n, F), E=thermal; measured fission fragment mass spectra, fragment energy vs mass. Unslowed fission fragments, one-armed tof spectrometer.

doi: 10.1016/0168-9002(91)90798-U
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41496.

1979AL08 Nucl.Phys. A321, 189 (1979)

A.A.Alexandrov, M.P.Kudoyarov, I.K.Lemberg, A.A.Pasternak

Lifetimes and Spin-Parity Assignments of Excited States in ⁶⁹Ge Populated in the ⁶⁶Zn(α, nγ) Reaction

NUCLEAR REACTIONS ⁶⁶Zn(α, nγ), E=11.8, 14.0, 16.5 MeV; measured Iγ(E), Iγ(θ), DSA. ⁶⁹Ge deduced levels, T_1/2, B(E2), B(M1), γ-branching ratios, J, δ. Enriched target.

doi: 10.1016/0375-9474(79)90692-4
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1977AL14 Izv.Akad.Nauk SSSR, Ser.Fiz. 41, 49 (1977); Bull.Acad.Sci.USSR, Phys.Ser. 41, No.1, 39 (1977)

A.A.Aleksandrov, V.S.Zvonov, M.A.Ivanov, I.K.Lemberg, A.S.Mishin, A.A.Pasternak

Lifetimes of ⁶⁴Zn Levels Populated in the ⁵¹V(¹⁶O, p2nγ) Reaction

NUCLEAR REACTIONS ⁵¹V(¹⁶O, 2npγ), E=49 MeV; measured Eγ, Iγ, γ-delay. Plunger method. ⁶⁴Zn deduced levels, T_1/2, γ-branching, B(λ).

1975AL13 Izv.Akad.Nauk SSSR, Ser.Fiz. 39, 458 (1975); Bull.Acad.Sci.USSR, Phys.Ser. 39, No.3, 1 (1975)

A.A.Aleksandrov, G.-Y.Baier, T.Vylov, E.P.Grigorev, K.Y.Gromov, V.G.Kalinnikov

The Excited States of ¹⁵⁸Dy

RADIOACTIVITY ^158,158mHo; measured Eγ, Iγ, γγ-coin; deduced log ft. ¹⁵⁸Dy deduced levels, J, π, δ.

1975AL26 Izv.Akad.Nauk SSSR, Ser.Fiz. 39, 1661 (1975); Bull.Acad.Sci.USSR, Phys.Ser. 39, No.8, 80 (1975)

A.A.Aleksandrov, G.J.Beyer, T.Vlov, P.Galan, M.Gonusek, V.M.Gorozhankin, K.Y.Gromov, R.Ion-Mikhai, V.G.Kalinnikov, V.V.Kuznetsov, N.Z.Marupov, T.M.Muminov, M.Yakhim

Identification of ¹⁵⁶Er

RADIOACTIVITY ¹⁵⁶Er [from Ta(660-MeV p, X)]; measured T_1/2, Eγ, Iγ, I(ce), γγ(t); deduced log ft. ¹⁵⁶Ho deduced levels, J, π, T_1/2, γ-multipolarity, δ. Mass-separator, ion-exchange chemistry.

1974AL27 Izv.Akad.Nauk SSSR, Ser.Fiz. 38, 2096 (1974); Bull.Acad.Sci.USSR, Phys.Ser. 38, No.10, 71 (1974)

A.A.Aleksandrov, V.S.Buttsev, T.Vylov, E.P.Grigorev, K.Y.Gromov, V.G.Kalinnikov, N.A.Lebedev

The γ Emission of ¹⁶⁰Ho

RADIOACTIVITY ¹⁶⁰Er, ¹⁶⁰Ho; measured Eγ, Iγ, I(ce); deduced ICC. ¹⁶⁰Dy, ¹⁶⁰Ho deduced transitions, γ-multipolarity. Mass separated sources.

1974AL28 Izv.Akad.Nauk SSSR, Ser.Fiz. 38, 2103 (1974); Bull.Acad.Sci.USSR, Phys.Ser. 38, No.10, 77 (1974)

A.A.Aleksandrov, V.S.Buttsev, T.Vylov, E.P.Grigorev, K.Y.Gromov, V.G.Kalinnikov, N.A.Lebedev

Decay of ¹⁶⁰Ho Isomers and the Properties of ¹⁶⁰Dy

RADIOACTIVITY ¹⁶⁰Ho; measured no new data. ¹⁶⁰Dy deduced levels, J, π, K, band parameters, B(λ), Q₀, level density.

1974AL30 Izv.Akad.Nauk SSSR, Ser.Fiz. 38, 2487 (1974); Bull.Acad.Sci.USSR, Phys.Ser. 38, No.12, 20 (1974)

A.A.Aleksandrov, V.S.Buttsev, T.Vylov, E.P.Grigorev, K.Y.Gromov, V.G.Kalinnikov, A.Lyatushinski, V.I.Stegailov

Radiations from ¹⁵⁸Ho Decay

RADIOACTIVITY ¹⁵⁸Ho [from Ta(660-MeV p, X)]; measured Eγ, Iγ, γγ-coin, I(ce), T_1/2; deduced ICC. ¹⁵⁸Dy deduced transitions, multipolarity, ICC. ¹⁵⁸Ho isomeric transition deduced T_1/2.

1973GR28 Izv.Akad.Nauk SSSR, Ser.Fiz. 37, 989 (1973); Bull.Acad.Sci.USSR, Phys.Ser. 37, No.5, 66 (1974)

E.P.Grigorev, A.A.Aleksandrov

Spectrum of γ Rays from ⁴⁴Ti → ⁴⁴Sc → ⁴⁴Ca Decays

RADIOACTIVITY ⁴⁴Ti, ⁴⁴Sc; measured Eγ, Iγ; deduced log ft, Iβ, ⁴⁴Sc, ⁴⁴Ca deduced levels, relative B(λ), ICC.

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Note: The following list of authors and aliases matches the search parameter A.A.Alexandrov: , A.A.ALEKSANDROV, A.A.ALEXANDROV