English  |  正體中文  |  简体中文  |  Items with full text/Total items : 65421/65421 (100%)
Visitors : 22327383      Online Users : 404
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39404


    Title: EVALUATION OF LIQUID STRUCTURE FOR POTASSIUM, ZINC, AND CADMIUM
    Authors: LAI,SK;LI,W;TOSI,MP
    Contributors: 物理研究所
    Keywords: RANDOM-PHASE APPROXIMATION;CONSISTENT INTEGRAL-EQUATIONS;HYPERNETTED-CHAIN EQUATIONS;ELECTRON-ION PLASMAS;ONE-COMPONENT PLASMA;ALKALI-METALS;THERMODYNAMIC PROPERTIES;CRITICAL-BEHAVIOR;CLASSICAL-PLASMA;FREE-ENERGY
    Date: 1990
    Issue Date: 2010-07-08 14:14:59 (UTC+8)
    Publisher: 中央大學
    Abstract: The main aim of this work is to give a theoretical interpretation for the "anomalous" liquid-structure factors of zinc and cadmium near freezing and for their variation with temperature, as contrasted with the "normal" behavior of a liquid metal such as potassium. Using an ab initio generalized nonlocal model pseudopotential and with two alternative exchange-correlation functions for electronic screening, we construct interionic pair potentials for the above metals. These are then used for liquid-structure calculations within two alternative integral-equation schemes of considerable refinement, namely the modified hypernetted-chain approach of Rosenfeld and Ashcroft [Phys. Rev. A 20, 1208 (1979)] and the hybridization of the hypernetted chain and the soft-core mean spherical approximations as proposed by Zerah and Hansen [J. Chem. Phys. 84, 2336 (1986)]. The comparison between the theoretical results for the temperature dependence of the liquid-structure factor of potassium and very recent neutron-diffraction data gives us confidence in the high reliability of the pseudopotential in the present integral-equation schemes. The same approach is then extended to investigate the liquid-structure factors for zinc and cadmium near their freezing temperature and at a few temperatures above freezing. We find that the asymmetric shape of the main peak in the structure factor of these elements near freezing can be understood in terms of the role of the medium- and long-range interaction parts in the pair potential. Our results also shed some light on the subtle changes of the liquid structure of these divalent metals with temperature, and specifically on the thermal influence in restoring the skewed shape of the main peak back to a normal symmetric shape at much higher temperatures.
    Relation: PHYSICAL REVIEW A
    Appears in Collections:[物理研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML314View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明