Density effect on molecular bond length in fluid I2 by x-ray absorption spectroscopy

被引:19
作者
Buontempo, U
Filipponi, A
Postorino, P
Zaccari, R
机构
[1] Univ Aquila, Dipartimento Fis, I-67010 Laquila, Italy
[2] INFM, Unita Ric, I-67010 Laquila, Italy
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[4] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[5] INFM Roma 3, Unita Ric, I-00146 Rome, Italy
关键词
D O I
10.1063/1.475811
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Precise measurements of x-ray absorption spectra above the I K-edge both in the low-density gas in a wide temperature range and in the liquid along the coexistence curve have been performed, By using an advanced data analysis procedure it was possible, for the first time, to reveal changes in the structure of the I-2 molecule in the liquid as a function of density. The relevance of these changes and the possible correlations with other peculiar properties of liquid I-2, and in particular with the metallization transition observed in the liquid under pressure, are discussed. (C) 1998 American Institute of Physics.
引用
收藏
页码:4131 / 4137
页数:7
相关论文
共 25 条
  • [11] X-ray-absorption spectroscopy and n-body distribution functions in condensed matter .2. Data analysis and applications
    Filipponi, A
    DiCicco, A
    [J]. PHYSICAL REVIEW B, 1995, 52 (21): : 15135 - 15149
  • [12] ABINITIO MODELING OF X-RAY ABSORPTION-SPECTRA
    FILIPPONI, A
    DICICCO, A
    TYSON, TA
    NATOLI, CR
    [J]. SOLID STATE COMMUNICATIONS, 1991, 78 (04) : 265 - 268
  • [13] X-ray-absorption spectroscopy and n-body distribution functions in condensed matter .1. Theory
    Filipponi, A
    DiCicco, A
    Natoli, CR
    [J]. PHYSICAL REVIEW B, 1995, 52 (21): : 15122 - 15134
  • [14] FILIPPONI A, UNPUB
  • [15] HOVEGRANT M, 1995, KIRKOTHMER ENCY CHEM, V14, P710
  • [16] ROLE OF DENSITY IN RAMAN-SCATTERING OF IODINE
    MAGANA, JR
    LANNIN, JS
    [J]. PHYSICAL REVIEW B, 1988, 37 (05): : 2475 - 2482
  • [17] Mulliken R. S., 1969, MOL COMPLEXES LECT R
  • [18] APPROACH TO METALLIC STATE AS OBTAINED FROM OPTICAL AND ELECTRICAL MEASUREMENTS
    RIGGLEMAN, BM
    DRICKAMER, HG
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1963, 38 (11) : 2721 - &
  • [19] LATTICE AND MOLECULAR VIBRATIONS IN SINGLE-CRYSTAL I2 AT 77K BY INELASTIC NEUTRON-SCATTERING
    SMITH, HG
    NIELSEN, M
    CLARK, CB
    [J]. CHEMICAL PHYSICS LETTERS, 1975, 33 (01) : 75 - 78
  • [20] STRUCTURAL ASPECTS OF SOLID IODINE ASSOCIATED WITH METALLIZATION AND MOLECULAR DISSOCIATION UNDER HIGH-PRESSURE
    TAKEMURA, K
    MINOMURA, S
    SHIMOMURA, O
    FUJII, Y
    AXE, JD
    [J]. PHYSICAL REVIEW B, 1982, 26 (02): : 998 - 1004