-
[show abstract]
[hide abstract]
ABSTRACT: The Quark Matter 2006 conference was held on 14–20 November 2006 at the Shanghai Science Hall of the Shanghai Association of Sciences and Technology in Shanghai, China. It was the 19th International Conference on Ultra-Relativistic Nucleus–Nucleus Collisions. The conference was organized jointly by SINAP (Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)) and CCNU (Central China Normal University, Wuhan). Over 600 scientists from 32 countries in five continents attended the conference. This is the first time that China has hosted such a premier conference in the field of relativistic heavy-ion collisions, an important event for the Chinese high energy nuclear physics community. About one half of the conference participants are junior scientists—a clear indication of the vigor and momentum for this field, in search of the fundamental nature of the nuclear matter at extreme conditions. Professor T D Lee, honorary chair of the conference and one of the founders of the quark matter research, delivered an opening address with his profound and philosophical remarks on the recent discovery of the nature of strongly-interacting quark-gluon-plasma (sQGP). Professor Hongjie Xu, director of SINAP, gave a welcome address to all participants on behalf of the two hosting institutions. Dr Peiwen Ji, deputy director of the Mathematics and Physics Division of the Natural Science Foundation of China (NSFC), also addressed the conference participants and congratulated them on the opening of the conference. Professor Mianheng Jiang, vice president of the Chinese Academy of Sciences (CAS), gave a concise introduction about the CAS as the premier research institution in China. He highlighted continued efforts at CAS to foster international collaborations between China and other nations. The Quark Matter 2006 conference is an example of such a successful collaboration between high energy nuclear physicists in China and other nations all over the world. The scientific program of the conference began with an overview of high energy nuclear physics in China by Professor Wenqing Shen, vice president of the National Natural Science Foundation of China. Professor Shen highlighted many contributions made by the Chinese scientists in both theory and experiment. Dr Nick Samios, former director of Brookhaven National Laboratory (BNL), gave a vivid account of the early years of RHIC and recent accomplishments. Highlights of the conference include new results from RHIC at BNL and SPS (Super Proton Synchrotron) at CERN (European Organization for Nuclear Research). Many experimental results reported at the conference support the notion that the quark-gluon matter at RHIC behaves like a perfect liquid with minimum viscosity to entropy ratio. There were 15 plenary sessions which covered 54 plenary talks, 12 parallel sessions and 1 poster session. A total of 320 abstracts were submitted to the conference out of which 124 were selected for oral presentation and the rest were assigned to the poster session. Talks and posters in the conference covered a broad range of experimental and theoretical progress in ultra-relativistic heavy-ion collisions, which includes new evidence of sQGP, jet quenching and heavy quark energy loss, heavy-ion collision phenomenology, quantum field theory at finite temperature and/or density, and relevant areas of astrophysics and plasma physics. The Quark Matter 2006 conference coincided with the 80th birthday of Professor T D Lee. A special reception was held in the banquet hall of the Shanghai Grand Theatre to celebrate Professor Lee's birthday and to honor his great contributions to physics, in particular, to the development of high energy nuclear physics research in China. We would like to thank the members of the International Advisory Committee for providing valuable advice on a variety of matters, from the general structure of the conference to the selection of the plenary speakers and selection of abstracts for oral presentations. Professors T Hemmick, H Satz, D T Son and N Xu gave excellent pedagogical lectures in the pre-conference student symposium and their efforts were greatly appreciated. The Shanghai Association of Science and Technology (SAST) and the staff of the Shanghai science hall provided valuable assistance and services during the conference. The conference would not have run so smoothly without their professional dedication. We also thank Professor Wenqing Shen, Chairman of the SAST, for his many valuable suggestions to the conference organizers and for providing close cooperation with SAST staff. We thank members of the Local Organizing Committee for many useful suggestions and help. We would like to express our special appreciation for the tireless efforts by many local staff who worked very hard to make this conference a success. Dr Xiang-Zhou Cai, Mrs Wei Zhou and Mrs Yang Shen undertook many duties to coordinate and organize the local services. Dr Kun Wang took responsibility of the conference web page. Dr Wei Guo, Dr Wendong Tian, Mr Chunwang Ma and Mrs Wanyan Qian organized student volunteers for the conference. Without their help and dedication this conference could not have been such a success. The Quark Matter 2006 conference has received substantial financial support from many organizations, including the Chinese Academy of Sciences (CAS), the National Natural Science Foundation of China (NSFC), the Ministry of Education of China (MOE), Shanghai Science and Technology Committee (SSTC), Chinese Nuclear Physics Society (CNPS), Shanghai Institute of Applied Physics (SINAP), Central China Normal University (CCNU), China Center of Advanced Science and Technology (CCAST), Brookhaven National Laboratory (BNL), Lawrence Berkeley National Laboratory (LBNL), European Laboratory for Particle Physics (CERN), and Journal of Physics G: Nuclear and Particle Physics (IOP Publishing).
Journal of Physics G Nuclear and Particle Physics 07/2007; 34(8). · 4.18 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The chemical functionalization process of carbon nanotubes(CNTs) by hydrothermal treatments was investigated systematically under various reaction conditions, including different reagents, treatment time, and temperature. The treated samples were characterized by the FTIR, XPS and Raman spectroscopy. The results revealed that the hydrothermal technology is an effective method for the functionalization of CNTs and the control of the resulting chemical groups.
Guang pu xue yu guang pu fen xi = Guang pu 11/2005; 25(10):1595-8. · 0.84 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: Within the framework of an isospin-dependent quantum molecular dynamics (IDQMD) model, we study systematically the isospin dependence of four main categories of collective motions in intermediate energy heavy ion collisions, i.e., the in-plane directed flow, in-plane rotational flow, out-of-plane squeeze-out flow, and radial expansion flow. In particular, the influence of symmetry energy and isospin-dependent nucleon-nucleon cross sections on the isospin dependence of the collective flows is studied. © 2001 American Institute of Physics.
AIP Conference Proceedings. 11/2001; 597(1):168-173.
-
[show abstract]
[hide abstract]
ABSTRACT: Temperature dependence of the proton fraction in β-stable hot neutron stars matter is investigated within the framework of the Skyrme-Hartree-Fock theory using the extended Skyrme effective interaction. It is found that the proton fraction decreases with increasing temperature. This phenomenon is determined mainly by the temperature dependence of the nuclear matter symmetry energy within the present theoretical framework.
Journal of Physics G Nuclear and Particle Physics 07/2001; 27(8):1799. · 4.18 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The squeeze-out flow in reactions of $^{124}$Sn + $^{124}$Sn and $^{124}$Ba + $^{124}$Ba at different incident energies for different impact parameters is investigated by means of an isospin-dependent quantum molecular dynamics model. For the first time, it is found that the more neutron-rich system ($% ^{124}$Sn + $^{124}$Sn) exhibits weaker squeeze-out flow. This isospin dependence of the squeeze-out flow is shown to mainly result from the isospin dependence of nucleon-nucleon cross section and the symmetry energy. Comment: 4 pages in REVTex, 3 figures, 1 table
11/2000;
-
[show abstract]
[hide abstract]
ABSTRACT: Within the framework of an isospin-dependent quantum molecular dynamics model, the rotational flow in reactions of $^{58}$Fe + $^{58}$Fe and $^{58}$% Ni + $^{58}$Ni at 40 MeV/nucleon for different impact parameters is investigated by analyzing the mid-rapidity azimuthal distribution. The rotational observables are also calculated semiquantitatively. For the first time, it is found that the more neutron-rich system ($^{58}$Fe + $^{58}$Fe) exhibits stronger rotational collective flow. This isospin dependence of rotational collective flow is more appreciable in semi-peripheral collisions and it is shown to mainly result from the isospin dependence of nucleon-nucleon cross section rather than the symmetry energy. Meanwhile, it is indicated that the rotational flow depends strongly on the impact parameter. Comment: 4 pages, 4 figures (REVTex)
11/2000;
-
[show abstract]
[hide abstract]
ABSTRACT: The squeeze-out flow in reactions of 124Sn + 124Sn and 124Ba + 124Ba at different incident energies for different impact parameters is investigated by means of an isospin-dependent quantum
molecular dynamics model. For the first time, it is found that the more neutron-rich system (124Sn + 124Sn) exhibits weaker squeeze-out flow. This isospin dependence of the squeeze-out flow is shown to mainly result from the isospin
dependence of nucleon-nucleon cross-section and the symmetry energy.
European Physical Journal A 01/2000; 9(2):149-152. · 2.19 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: Within the framework of an isospin-dependent quantum molecular dynamics model, the multifragmentation in reactions of 112Sn+112Sn and 124Sn+124Sn at 40 MeV/nucleon is investigated. The calculated results are in good qualitative agreement with the experimental data which indicated that there were significantly different scalings of the mean number of intermediate mass fragments with the number of neutron and charged particles between the two reaction systems. Meanwhile, it is shown that the preequilibrium emission may affect strongly these scalings.
Phys. Rev. C. 11/1999; 60(6).
-
[show abstract]
[hide abstract]
ABSTRACT: Within the framework of an isospin-dependent quantum molecular dynamics model, the radial flows from the central collisions of 124Ba + 124Ba and 124Sn + 124Sn are studied at different incident energies. It is found that the more neutron-rich system exhibits smaller radial flow and it is shown that the radial flow is sensitive to the nucleon-nucleon cross sections and independent of the nuclear symmetry energy. It suggests that the experimental measurement of the radial flow for reaction systems with different ratios of neutron to proton provide a novel recipe for determining the isospin dependent in-medium nucleon-nucleon cross sections.
Physics Letters B.
-
