PHYSICS EXPERIMENTS ON SUPERHEAVY NUCLEI AT THE GSI SHIP

被引：1

作者：

Hofmann, Sigurd ^{[1
,2
]}

机构：

[1] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[2] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany

来源：

ACTA PHYSICA POLONICA B | 2012年 / 43卷 / 02期

关键词：

ELEMENT; MASSES; DISCOVERY;

D O I：

10.5506/APhysPolB.43.179

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An overview of present experimental investigations of superheavy nuclei at SHIP is given. Using cold fusion reactions which are based on lead and bismuth targets, relatively neutron deficient isotopes of the elements from bohrium (Z = 107) to copernicium (112) were synthesized at GSI in Darmstadt, Germany, and a neutron deficient isotope of element 113 at RIKEN in Wako, Japan. In hot fusion reactions of Ca-48 projectiles with actinide targets more neutron rich isotopes of element 112 and new elements up to element 118 were produced at FLNR in Dubna, Russia. Recently, part of these data which represent the first identification of nuclei located on the predicted island of superheavy nuclei (SHN), was confirmed in independent experiments. The measured data combined with theoretical results were used for estimating cross-sections for production of element 120 isotopes. Also evaluated were the decay properties of these isotopes. An experiment for searching of isotopes of element 120 has been started at the GSI SHIP.

引用

页码：179 / 191

页数：13

共 37 条

[1] Feature of production of new superheavy nuclei in actinide-based complete-fusion reactions [J].

Adamian, G. G. ;

Antonenko, N. V. ;

Scheid, W. .

EUROPEAN PHYSICAL JOURNAL A, 2009, 41 (02) :235-241

[2] DISCOVERY OF THE ELEMENT WITH ATOMIC NUMBER 112 (IUPAC Technical Report) [J].

Barber, Robert C. ;

Gaeggeler, Heinz W. ;

Karol, Paul J. ;

Nakahara, Hiromichi ;

Vardaci, Emanuele ;

Vogt, Erich .

PURE AND APPLIED CHEMISTRY, 2009, 81 (07) :1331-1343

[3] α-decay chains of 175289114 and 175293118 in the relativistic mean-field model -: art. no. 031302 [J].

Bender, M .

PHYSICAL REVIEW C, 2000, 61 (03)

[4] Structure of odd-N superheavy elements [J].

Cwiok, S ;

Nazarewicz, W ;

Heenen, PH .

PHYSICAL REVIEW LETTERS, 1999, 83 (06) :1108-1111

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

Cwiok, S ;

Heenen, PH ;

Nazarewicz, W .

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

[6] 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)

[7] Confirmation of the decay of 283112 and first indication for Hg-like behavior of element 112 [J].

Eichler, R. ;

Aksenov, N. V. ;

Belozerov, A. V. ;

Bozhikov, G. A. ;

Chepigin, V. I. ;

Dressler, R. ;

Dmitriev, S. N. ;

Gaggeler, H. W. ;

Gorshkov, V. A. ;

Haenssler, F. ;

Itkis, M. G. ;

Lebedev, V. Ya ;

Laube, A. ;

Malyshev, O. N. ;

Oganessian, Yu Ts ;

Petruschkin, O. V. ;

Piguet, D. ;

Rasmussen, P. ;

Shishkin, S. V. ;

Shutov, A. V. ;

Svirikhin, A. I. ;

Tereshatov, E. E. ;

Vostokin, G. K. ;

Wegrzecki, M. ;

Yeremin, A. V. .

NUCLEAR PHYSICS A, 2007, 787 :373C-380C

[8] Chemical characterization of element 112 [J].

Eichler, R. ;

Aksenov, N. V. ;

Belozerov, A. V. ;

Bozhikov, G. A. ;

Chepigin, V. I. ;

Dmitriev, S. N. ;

Dressler, R. ;

Gaeggeler, H. W. ;

Gorshkov, V. A. ;

Haenssler, F. ;

Itkis, M. G. ;

Laube, A. ;

Lebedev, V. Ya. ;

Malyshev, O. N. ;

Oganessian, Yu. Ts. ;

Petrushkin, O. V. ;

Piguet, D. ;

Rasmussen, P. ;

Shishkin, S. V. ;

Shutov, A. V. ;

Svirikhin, A. I. ;

Tereshatov, E. E. ;

Vostokin, G. K. ;

Wegrzecki, M. ;

Yeremin, A. V. .

NATURE, 2007, 447 (7140) :72-75

[9] New Superheavy Element Isotopes: 242Pu(48Ca, 5n)285114 [J].

Ellison, P. A. ;

Gregorich, K. E. ;

Berryman, J. S. ;

Bleuel, D. L. ;

Clark, R. M. ;

Dragojevic, I. ;

Dvorak, J. ;

Fallon, P. ;

Fineman-Sotomayor, C. ;

Gates, J. M. ;

Gothe, O. R. ;

Lee, I. Y. ;

Loveland, W. D. ;

McLaughlin, J. P. ;

Paschalis, S. ;

Petri, M. ;

Qian, J. ;

Stavsetra, L. ;

Wiedeking, M. ;

Nitsche, H. .

PHYSICAL REVIEW LETTERS, 2010, 105 (18)

[10] Development of an odd-Z-projectile reaction for heavy element synthesis:: 208Pb(64Ni,n)271Ds and 208Pb(65Cu,n)272111 -: art. no. 212702 [J].

Folden, CM ;

Gregorich, KE ;

Düllmann, CE ;

Mahmud, H ;

Pang, GK ;

Schwantes, JM ;

Sudowe, R ;

Zielinski, PM ;

Nitsche, H ;

Hoffman, DC .

PHYSICAL REVIEW LETTERS, 2004, 93 (21)

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