“…Their thermal expansion can help us understand the nature of interatomic forces between ions. Many experiments have measured the thermal expansion of caesium halides (Bridgman, 1932;Menary, Ubbelohde & Woodward, 1951;Johnson, Agron & Bredig, 1955;Krishnan & Srinivasan, 1956;Pathak & Pandya, 1960;Whittemore, 1962;Christian & Lynch, 1964;Majumdar & Roy, 1965;James & Yates, 1965;White, 1965;Morlin & Tremmel, 1966;Bailey & Yates, 1967;Pathak & Vasavada, 1970;Fullam, 1972;White & Collins, 1973;Srivastava & Merchant, 1973;Rapp & Merchant, 1973;Panter, 1974;Ganesan & Girirajan, 1986). Most of the data are listed in the book by Touloukian, Kirby, Taylor & Lee (1977).…”