New Insights into the 243Am+48Ca Reaction Products Previously Observed in the Experiments on Elements 113, 115, and 117

被引：108

作者：

Oganessian, Yu Ts ^{[1
]}

Abdullin, F. Sh ^{[1
]}

Dmitriev, S. N. ^{[1
]}

Gostic, J. M. ^{[2
]}

Hamilton, J. H. ^{[3
]}

Henderson, R. A. ^{[2
]}

Itkis, M. G. ^{[1
]}

Moody, K. J. ^{[2
]}

Polyakov, A. N. ^{[1
]}

Ramayya, A. V. ^{[3
]}

Roberto, J. B. ^{[4
]}

Rykaczewski, K. P. ^{[4
]}

Sagaidak, R. N. ^{[1
]}

Shaughnessy, D. A. ^{[2
]}

Shirokovsky, I. V. ^{[1
]}

Stoyer, M. A. ^{[2
]}

Subbotin, V. G. ^{[1
]}

Sukhov, A. M. ^{[1
]}

Tsyganov, Yu S. ^{[1
]}

Utyonkov, V. K. ^{[1
]}

Voinov, A. A. ^{[1
]}

Vostokin, G. K. ^{[1
]}

机构：

[1] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[3] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

Evaporation;

D O I：

10.1103/PhysRevLett.108.022502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Results of a new series of experiments on the study of production cross sections and decay properties of the isotopes of element 115 in the reaction Am-243 + Ca-48 are presented. Twenty-one new decay chains originating from (288)115 were established as the product of the 3n-evaporation channel by measuring the excitation function at three excitation energies of the compound nucleus (291)115. The decay properties of all newly observed nuclei are in full agreement with those we measured in 2003. At the lowest excitation energy E* = 33 MeV, for the first time we registered the product of the 2n-evaporation channel, (289)115, which was also observed previously in the reaction Bk-249 + Ca-48 as the daughter nucleus of the decay of (293)117. The maximum cross section for the production of (288)115 is found to be 8.5 pb at E* approximate to 36 MeV.

引用

页数：5

共 16 条

[1] The AME2003 atomic mass evaluation (II). Tables, graphs and references [J].

Audi, G ;

Wapstra, AH ;

Thibault, C .

NUCLEAR PHYSICS A, 2003, 729 (01) :337-676

[2]

Bass R., 1980, LECT NOTES PHYS, V117, P281

[3] Shape coexistence and triaxiality in the superheavy nuclei [J].

Cwiok, S ;

Heenen, PH ;

Nazarewicz, W .

NATURE, 2005, 433 (7027) :705-709

[4]

DMITRIEV SN, IN PRESS

[5] Production and Decay of Element 114: High Cross Sections and the New Nucleus 277Hs [J].

Duellmann, Ch. E. ;

Schaedel, M. ;

Yakushev, A. ;

Tuerler, A. ;

Eberhardt, K. ;

Kratz, J. V. ;

Ackermann, D. ;

Andersson, L. -L. ;

Block, M. ;

Bruechle, W. ;

Dvorak, J. ;

Essel, H. G. ;

Ellison, P. A. ;

Even, J. ;

Gates, J. M. ;

Gorshkov, A. ;

Graeger, R. ;

Gregorich, K. E. ;

Hartmann, W. ;

Herzberg, R. -D. ;

Hessberger, F. P. ;

Hild, D. ;

Huebner, A. ;

Jaeger, E. ;

Khuyagbaatar, J. ;

Kindler, B. ;

Krier, J. ;

Kurz, N. ;

Lahiri, S. ;

Liebe, D. ;

Lommel, B. ;

Maiti, M. ;

Nitsche, H. ;

Omtvedt, J. P. ;

Parr, E. ;

Rudolph, D. ;

Runke, J. ;

Schausten, B. ;

Schimpf, E. ;

Semchenkov, A. ;

Steiner, J. ;

Thoerle-Pospiech, P. ;

Uusitalo, J. ;

Wegrzecki, M. ;

Wiehl, N. .

PHYSICAL REVIEW LETTERS, 2010, 104 (25)

[6] Nuclear properties according to the Thomas-Fermi model [J].

Myers, WD ;

Swiatecki, WJ .

NUCLEAR PHYSICS A, 1996, 601 (02) :141-167

[7] Measurements of cross sections for the fusion-evaporation reactions 244Pu(48Ca,xn)292-x114 and 245Cm(48Ca,xn)293-x116 -: art. no. 054607 [J].

Oganessian, YS ;

Utyonkov, VK ;

Lobanov, YV ;

Abdullin, FS ;

Polyakov, AN ;

Shirokovsky, IV ;

Tsyganov, YS ;

Gulbekian, GG ;

Bogomolov, SL ;

Gikal, BN ;

Mezentsev, AN ;

Iliev, S ;

Subbotin, VG ;

Sukhov, AM ;

Voinov, AA ;

Buklanov, GV ;

Subotic, K ;

Zagrebaev, VI ;

Itkis, MG ;

Patin, JB ;

Moody, KJ ;

Wild, JF ;

Stoyer, MA ;

Stoyer, NJ ;

Shaughnessy, DA ;

Kenneally, JM ;

Lougheed, RW .

PHYSICAL REVIEW C, 2004, 69 (05) :054607-1

[8] Synthesis of elements 115 and 113 in the reaction 243Am+48Ca -: art. no. 034611 [J].

Oganessian, YT ;

Utyonkov, VK ;

Dmitriev, SN ;

Lobanov, YV ;

Itkis, MG ;

Polyakov, AN ;

Tsyganov, YS ;

Mezentsev, AN ;

Yeremin, AV ;

Voinov, AA ;

Sokol, EA ;

Gulbekian, GG ;

Bogomolov, SL ;

Iliev, S ;

Subbotin, VG ;

Sukhov, AM ;

Buklanov, GV ;

Shishkin, SV ;

Chepygin, VI ;

Vostokin, GK ;

Aksenov, NV ;

Hussonnois, M ;

Subotic, K ;

Zagrebaev, VI ;

Moody, KJ ;

Patin, JB ;

Wild, JF ;

Stoyer, MA ;

Stoyer, NJ ;

Shaughnessy, DA ;

Kenneally, JM ;

Wilk, PA ;

Lougheed, RW ;

Gäggeler, HW ;

Schumann, D ;

Bruchertseifer, H ;

Eichler, R .

PHYSICAL REVIEW C, 2005, 72 (03)

[9] Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactions 233,238U, 242Pu, and 248Cm+48Ca -: art. no. 064609 [J].

Oganessian, YT ;

Utyonkov, VK ;

Lobanov, YV ;

Abdullin, FS ;

Polyakov, AN ;

Shirokovsky, IV ;

Tsyganov, YS ;

Gulbekian, GG ;

Bogomolov, SL ;

Gikal, BN ;

Mezentsev, AN ;

Iliev, S ;

Subbotin, VG ;

Sukhov, AM ;

Voinov, AA ;

Buklanov, GV ;

Subotic, K ;

Zagrebaev, VI ;

Itkis, MG ;

Patin, JB ;

Moody, KJ ;

Wild, JF ;

Stoyer, MA ;

Stoyer, NJ ;

Shaughnessy, DA ;

Kenneally, JM ;

Wilk, PA ;

Lougheed, RW ;

Il'kaev, RI ;

Vesnovskii, SP .

PHYSICAL REVIEW C, 2004, 70 (06) :064609-1

[10] Experiments on the synthesis of element 115 in the reaction 243Am(48Ca,xn)291-x115 -: art. no. 021601 [J].

Oganessian, YT ;

Utyonkoy, VK ;

Lobanov, YV ;

Abdullin, FS ;

Polyakov, AN ;

Shirokovsky, IV ;

Tsyganov, YS ;

Gulbekian, GG ;

Bogomolov, SL ;

Mezentsev, AN ;

Iliev, S ;

Subbotin, VG ;

Sukhov, AM ;

Voinov, AA ;

Buklanov, GV ;

Subotic, K ;

Zagrebaev, VI ;

Itkis, MG ;

Patin, JB ;

Moody, KJ ;

Wild, JF ;

Stoyer, MA ;

Stoyer, NJ ;

Shaughnessy, DA ;

Kenneally, JM ;

Lougheed, RW .

PHYSICAL REVIEW C, 2004, 69 (02) :216011-216015

← 1 2 →