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NSR database version of May 2, 2024.

Search: Author = K.K.Istekov

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1983IG01      Yad.Fiz. 37, 831 (1983)

A.V.Ignatyuk, K.K.Istekov, G.N.Smirenkin

Influence of Collective Effects on Neutron-to-Fission Widths Ratio in the Vicinity of N = 126 Shell

NUCLEAR REACTIONS Hf(⁴⁰Ar, 4n), Pb(¹⁶O, 4n), ²²⁶Ra(α, 4n); analyzed < Γn >/< ΓF >, fission data; deduced collective excitation effect on level density.

1982IG02      Yad.Fiz. 36, 54 (1982)

A.V.Ignatyuk, K.K.Istekov, G.N.Smirenkin

Analysis of Angular Anisotropy in Low-Energy Fission of Pre-Actinide Nuclei

NUCLEAR STRUCTURE ^{208,210,211,212}Po; analyzed fission data; deduced effective moment of inertia barrier dependence.

1980IG02      Yad.Fiz. 32, 347 (1980); Sov.J.Nucl.Phys. 32, 180 (1980)

A.V.Ignatyuk, K.K.Istekov, G.N.Smirenkin

Fission Barriers of the Pre-Actinide Nuclei

NUCLEAR STRUCTURE ¹⁷³Lu, ^{186,187,188,190}Os, ¹⁷⁹Ta, ¹⁸²W, ^189,191Ir, ^{196,198,199,200}Hg, ¹⁸⁵Re, ^{192,193,194,196}Pt, ²⁰¹Tl, ^{208,210,211,212}Po, ^195,197Au, ²¹³At, ^207,209Bi; analyzed fission data; deduced barriers. Liquid drop model, collective effects.

1980KU14      Yad.Fiz. 32, 355 (1980); Sov.J.Nucl.Phys. 32, 184 (1980)

V.M.Kupriyanov, K.K.Istekov, B.I.Fursov, G.N.Smirenkin

A Simple Description of Dependence of Fission Barriers and of the Ratio Γ(n)/Γ(f) on the Nucleonic Composition for Transuranium Nuclei

NUCLEAR STRUCTURE ^{225,226,227,228}Ra, ^226,227,228Ac, ^{227,228,229,230,231,232,233,234}Th, ^{230,231,232,233}Pa, ^{231,232,233,234,235,236,237,238,239,240}U, ^{233,234,235,236,237,238,239}Np, ^{237,238,239,240,241,242,243,244,245}Pu, ^{239,240,241,242,243,244,245,246,247}Am, ^{241,242,243,244,245,246,247,248,249,250}Cm, ^{245,246,247,248,249,250}Bk, ^250,253Cf, ^249,250,251Es; calculated < Γn/Γf >, fission barrier height dependences on neutron number. Phenomenological model.

1979IG03      Yad.Fiz. 29, 875 (1979); Sov.J.Nucl.Phys. 29, 450 (1979)

A.V.Ignatyuk, K.K.Istekov, G.N.Smirenkin

The Role of Collective Effects in the Systematics of Nuclear Level Densities

NUCLEAR STRUCTURE A=150-250; calculated ratio of symptotic value of level density to nucleon number. Collective effects, pair correlations.

1979IG04      Yad.Fiz. 30, 1205 (1979)

A.V.Ignatyuk, K.K.Istekov, G.N.Smirenkin

Collective Effects in the Level Density and the Nuclear Fission Probability

NUCLEAR STRUCTURE ²¹³At, ^212,210Po, ¹⁸⁸Os, ¹⁸⁵Re, ¹⁷⁹Ta; calculated level density, fission probability; deduced collective effects.

1979IS04      Yad.Fiz. 29, 1156 (1979); Sov.J.Nucl.Phys. 29, 595 (1979)

K.K.Istekov, V.M.Kupriyanov, B.I.Fursov, G.N.Smirenkin

On the Applicability of the Conventional Systematics of the Fission Probability

COMPILATION ^225,227,228Ra, ^226,227,228Ac, ^{227,228,229,230,231,232,233,234}Th, ^{230,231,232,233}Pa, ^{231,232,233,234,235,236,237,238,239,240}U, ^{233,234,235,236,237,238,239}Np, ^{237,238,239,240,241,242,243,244,245}Pu, ^{239,240,241,242,243,244,245}Am, ^{241,242,243,244,245,246,247,248,249}Cm, ^{245,246,247,248,249,250}Bk, ^250,253Cf, ^249,250,251Es; compiled data on Γn/Γf low lying excited states.

1978IS05      Pisma Zh.Eksp.Teor.Fiz. 27, 135 (1978); JETP Lett.(USSR) 27, 126 (1978)

K.K.Istekov, V.M.Kupriyanov, B.I.Fursov, G.N.Smirenkin

Fission of Cold and Heated Californium Nuclei

NUCLEAR REACTIONS ²⁵²Cf(n, F), (HI, xn), E=10-80 MeV; analyzed data on Γn/Γf. Confirmed that liquid-drop-model fission barrier is 2.5 times lower for strongly heated nuclei.