th / 9 71 00 42 v 1 1 8 O ct 1 99 7 Fusion cross sections for superheavy nuclei in the dinuclear system concept

نویسندگان

  • G. G. Adamian
  • N. V. Antonenko
  • W. Scheid
  • V. V. Volkov
چکیده

Using the dinuclear system concept we present calculations of production cross sections for the heaviest nuclei. The obtained results are in a good agreement with the experimental data. The experimentally observed rapid fall-off of the cross sections of the cold fusion with increasing charge number Z of the compound nucleus is explained. Optimal experimental conditions for the synthesis of the superheavy nuclei are suggested.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

th / 9 71 00 41 v 1 1 8 O ct 1 99 7 Treatment of competition between complete fusion and quasifission in collisions of heavy nuclei

A model of competition between complete fusion and quasifission channels in fusion of two massive nuclei is extended to include the influence of dissi-pative effects on the dynamics of nuclear fusion. By using the multidimen-sional Kramers-type stationary solution of the Fokker–Planck equation, the fusion rate through the inner fusion barrier in mass asymmetry is studied. Pu reactions used for ...

متن کامل

ar X iv : n uc l - th / 9 91 10 09 v 1 2 N ov 1 99 9 DINUCLEAR CONCEPT – CLUSTER MODEL OF FUSION

The synthesis of superheavy elements is analysed within the dinuclear system concept of compound nucleus formation. The perspectives for using radioactive beams in complete fusion reactions are discussed. The existing fusion models are distinguished by the choice of the relevant collective degree of freedom which is mainly responsible for the complete fusion. For example, many models assume a m...

متن کامل

l - th / 9 71 00 54 v 1 2 3 O ct 1 99 7 The energy dependence of the in - medium ηN cross section

Within the Glauber formalism and a BUU transport model we analyze the η-photoproduction data from nuclei and evaluate the in-medium ηN cross section. Our results indicate that the ηN cross section is almost independent of the η energy up to 200 MeV.

متن کامل

- th / 0 41 00 77 v 1 1 8 O ct 2 00 4 Some Calculations for Cold Fusion Superheavy Elements ∗

The Q value and optimal exciting energy of the hypothetical superheavy nuclei in cold fusion reaction are calculated with relativistic mean field model and semiemperical shell model mass equation(SSME) and the validity of the two models is tested. The fusion barriers are also calculated with two different models and reasonable results are obtained. The calculations can give useful references fo...

متن کامل

Isotopic dependence of fusion cross sections in reactions with heavy nuclei

The dependence of fusion cross section on the isotopic composition of colliding nuclei is analysed within the dinuclear system concept for compound nucleus formation. Probabilities of fusion and surviving probabilities, ingredients of the evaporation residue cross sections, depend decisively on the neutron numbers of the dinuclear system. Evaporation residue cross sections for the production of...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997