ステアリン酸コバルト単分子累積膜の真空中放置および真空中X線照射による脱着
1976 年 45 巻 6 号 p. 514-522
詳細
1976 年 45 巻 6 号 p. 514-522
The fractions of desorption of monomolecular multilayer films consisted of cobalt-hydrogen stearate in vacuum at about 24°C and under X-ray irradiation in vacuum are measured using radioisotope tracer technique and photoelectron intensity change in an ESCA instrument. The film labeled with 14C or 60Co is deposited on gold substratum by Blodgett method.
In vacuum, only a part of the stearic acid molecules in the multilayer film are lost. The fraction of desorption, ƒ, of n layer film is expressed by ƒ_??_(1-α)n. Here, α is nearly equal to the conversion ratio of stearic acid molecules to cobalt stearate.
Under the X-ray irradiation in vacuum, there are “fast” desorption which is due to the desorption of stearic acid molecules and “slow” desorption mainly caused by the rupture of mol-ecules. The structure of the film after the “fast” desorption is considered to be sub-skelton.
