Abstract Angular distributions of pions and kaons produced in heavy ion collisions at the low-energy end of high energies (1--2 A GeV) have been investigated by using a multisource ideal gas model. The model covers the expansions and movements of the emission sources, and it is related to the collective flows. By using the analytic expression and the Monte Carlo method, the azimuthal and polar angle distributions of mesons are calculated by the model and compared with the experimental data of the KaoS Collaboration.
Received: 10 May 2007
Revised: 10 September 2007
Accepted manuscript online:
Fund: Project
supported by the National Natural Science Foundation of China (Grant
Nos 10675077 and 10275042), the Shanxi Provincial Natural Science
Foundation of China (Grant No 2007011005), and the Shanxi Provincial
Foundation for Returned Overseas Scholars, China.
Cite this article:
Liu Fu-Hu(刘福虎) Anisotropic emission of charged mesons and structure characteristic of emission source in heavy ion collisions at 1--2A GeV 2008 Chin. Phys. B 17 883
[1]
Studies of K-shell x-ray energy shifts induced by MeV/u heavy ions Song Zhang-Yong(宋张勇), Yang Zhi-Hu(杨治虎), Shao Jian-Xiong(邵剑雄), Cui Ying(崔莹), Zhang Hong-Qiang(张红强), Ruan Fang-Fang(阮芳芳), Du Juan(杜鹃), Gao Zhi-Min(高志民), Yu De-Yang(于得洋), Chen Xi-Meng(陈熙萌), and Cai Xiao-Hong(蔡晓红). Chin. Phys. B, 2009, 18(4): 1443-1450.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
