Download or read book Channel coupling Effects in Heavy ion Fusion Reactions written by Carlo H. Dasso and published by . This book was released on 1983 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Channel Coupling Effects in Heavy Ion Fusion Reactions 2100 K BENHAVN written by C. H. (NORDITA) Dasso and published by . This book was released on 1983 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy Ion Fusion Reactions written by Kōhei Furuno and published by . This book was released on 1985 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy ion Reactions With Neutron rich Beams Proceedings Of The Riken International Workshop written by Shuhei Yamaji and published by World Scientific. This book was released on 1993-11-01 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses primarily the characteristics of reactions induced by unstable nuclei and aims to guide future directions in this area of research. In addition, the present status of research in related fields is reviewed. The topics discussed can be broadly classified into: fusion and transfer reactions with stable nuclei, fission and molecular resonance, structure of unstable nuclei, reactions with unstable nuclei, synthesis of superheavy elements and heavy-ion fusion with neutron-rich beams.
Download or read book Entrance Channel Effects in the Production of Evaopration Residues in Heavy ion Fusion Reactions written by and published by . This book was released on 2003 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coupled Channel Effects at Near Barrier Energies written by Satyaranjan Santra and published by LAP Lambert Academic Publishing. This book was released on 2012-04 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Study of heavy ion collisions around the Coulomb barrier offers the opportunity of observing spectacular effects (e.g., strong energy dependence of the optical potential, enhancement of sub-barrier fusion cross section, etc.) due to the mechanisms of coupled reaction channels (CRC). In the present dissertation, systematic measurements and analysis of elastic, inelastic, transfer, fission, and evaporation residue cross sections for carbon induced reactions are presented. Results of CRC calculations explained all the channels simultaneously. Effective real potentials obtained from the CRC calculations are consistent with the observed energy dependence of the real potential. Threshold anomaly in reactions involving several projectiles with same target shows that the barrier shift (reduction), with respect to uncoupled barrier, increases with the projectile mass. It was found that precision fusion and barrier distribution data alone may not lead to correct description of fusion mechanism or the structure information of interacting nuclei. Thus "A simultaneous description of elastic and all non-elastic channels is a must to comment on the coupling or structure effects".
Download or read book Microscopic Approach to Heavy ion Reactions written by Kirsten Vo-Phuoc and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heavy-ion reactions are affected by the nuclear structure of the reactants and other dynamical processes during the collision. Theoretical studies of such reactions lead to a clearer understanding of prohibitive mechanisms to heavy-ion fusion. One application of this is superheavy element formation, where quasifission is the major competing process to the formation of a compound nucleus in this region of the nuclear chart. Microscopic approaches that use mean field approximations, such as the time-dependent Hartree-Fock (TDHF) theory, have been increasingly used to study low energy heavy-ion reactions. In addition to reactions, nuclear structure properties can also be studied with microscopic theory. Such approaches do not require empirical knowledge of the nucleus and can be used as a predictive tool for studying structure or reactions involving exotic nuclei. In this thesis, TDHF is used to study nuclear vibrations and heavy-ion reactions at near barrier energies. The TDHF approach is applied first to a systematic study of low-lying octupole and quadrupole vibrational modes of {40-54}Ca isotopes. Then, fusion reactions are calcuated for Ca+Sn systems, using the barrier energy as the main observable. Fusion reactions are first calculated with no couplings (static HF calculations) before including all dynamics that the mean field approximation offers (TDHF calculations). The addition of dynamics often results in a lower fusion barrier compared to the static barrier, with the exception of systems involving the neutron rich {52,54}Ca projectiles. The difference in fusion barriers between the two sets of calculations are explored by considering couplings to vibrational states and transfer channels. To separate the effects of individual couplings, the coupled-channels approach is used with the HF calculations of the vibrational states as inputs. Such couplings account for most of the lowering of the static barrier. For the most neutron rich systems, coupling to vibrational states does not account for the dynamical barrier increase. Transfer channels, in particular proton pickup, are explored within TDHF and may play a role in this increased barrier energy. Following from fusion reactions, the factors and dynamics that may hinder fusion in heavier systems are studied in the reactions 48Ca, 50Ti, 52Cr, 54Fe, 56,64Ni, 58Zn+208Pb at energies ranging from 0% to 30% above the static HF barrier. Although most of these systems fuse at energies within this range, some systems reseparate for which emission of nucleons was apparent at scission point. The contact times were in most cases less than 10 zs and the attempt at $N/Z$ equilibration of these systems happen on fast time scales (1-2 zs). Larger amounts of mass transfer occur in systems with longer neck times and fewer magic numbers such as 34S+232Th and Cr+Pt systems that were also calculated for comparison. Further studies are required to better understand the role of shell effects as well as nucleon emission in quasifission reactions, and subsequently reactions leading to superheavy element formation.
Download or read book Nuclear Fusion written by Igor Girka and published by BoD – Books on Demand. This book was released on 2019-04-17 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power production and its consumption and distribution are among the most urgent problems of mankind. Despite positive dynamics in introducing renewable sources of energy, nuclear power plants still remain the major source of carbon-free electric energy. Fusion can be an alternative to fission in the foreseeable future. Research in the field of controlled nuclear fusion has been ongoing for almost 100 years. Magnetic confinement systems are the most promising for effective implementation, and the International Thermonuclear Experimental Reactor is under construction in France. To accomplish nuclear fusion on Earth, we have to resolve a number of scientific and technological problems. This monograph includes selected chapters on nuclear physics and mechanical engineering within the scope of nuclear fusion.
Download or read book The Effect of Channel Coupling on the Fusion of Heavy Nuclei written by Harlan Herman Lewandowski and published by . This book was released on 1984 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy Ion Fusion Reactions written by Sven Bjørnholm and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fusion Dynamics At The Extremes Procs Of The International Workshop written by Yu Ts Oganessian and published by World Scientific. This book was released on 2001-05-30 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the properties and fusion dynamics of very heavy nuclei. It contains the latest experimental results on the formation and fission of superheavy nuclei and on the near-barrier fusion of light exotic nuclei, along with the different theoretical approaches to the description of fusion dynamics and microscopic properties of superheavy nuclei. The book also discusses nuclear collective dynamics and expectations from the use of accelerated beams of radioactive nuclei in fusion reactions.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perspectives In Heavy Ion Physics Proceedings Of The 4th Italy japan Symposium written by Shigeru Kubono and published by World Scientific. This book was released on 2003-01-27 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 4th Italy-Japan Symposium on Heavy Ion Physics cover the following fields of nuclear physics: heavy ion nuclear reactions; nuclei under extreme conditions; nuclear astrophysics; photon detectors and physics; technology of RI beams and experimental instrumentation; application of RI beams.
Download or read book Fundamental Problems in Heavy ion Collisions written by Nikola Cindro and published by . This book was released on 1984 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exciting Interdisciplinary Physics written by Walter Greiner and published by Springer Science & Business Media. This book was released on 2014-07-08 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear physics is an exciting, broadly faceted field. It spans a wide range of topics, reaching from nuclear structure physics to high-energy physics, astrophysics and medical physics (heavy ion tumor therapy). New developments are presented in this volume and the status of research is reviewed. A major focus is put on nuclear structure physics, dealing with superheavy elements and with various forms of exotic nuclei: strange nuclei, very neutron rich nuclei, nuclei of antimatter. Also quantum electrodynamics of strong fields is addressed, which is linked to the occurrence of giant nuclear systems in, e.g., U+U collisions. At high energies nuclear physics joins with elementary particle physics. Various chapters address the theory of elementary matter at high densities and temperature, in particular the quark gluon plasma which is predicted by quantum chromodynamics (QCD) to occur in high-energy heavy ion collisions. In the field of nuclear astrophysics, the properties of neutron stars and quark stars are discussed. A topic which transcends nuclear physics is discussed in two chapters: The proposed pseudo-complex extension of Einstein's General Relativity leads to the prediction that there are no black holes and that big bang cosmology has to be revised. Finally, the interdisciplinary nature of this volume is further accentuated by chapters on protein folding and on magnetoreception in birds and many other animals.
Download or read book Physics Division Annual Report written by Argonne National Laboratory. Physics Division and published by . This book was released on 1997 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
