TY - JOUR
AU1 - CHAUDHRI, RAFI MOHAMMED
AU2 - KHAN, HAMID AHMAD
AU3 - SHOAIB, KHAN A.
AU4 - CHAUDHRI, M. MUNAWAR
AB - A NUMBER of workers have investigated ionization of gases by positive ions of low energies1–5. They have measured ionization electron current produced by positive ions by their impact with gas atoms. The greatest uncertainty in these investigations is due to the emission of secondary electrons from metals by positive ions and is an inherent weakness in most of these methods. The sensitivity of the apparatus used for detecting very small ionization electron current is another important consideration in these measurements. Disagreement in the results obtained by different workers may be ascribed mainly to these two factors. Values for ionization cross-sections and for on-set potentials vary from one observer to the other, but there is a general agreement concerning the belief that ionization of gases by positive ions of low energies is not caused by direct collisions between incident ions and electrons of the target atom. Satisfactory theory to explain the mechanism of this phenomenon in this energy-range is still lacking.
TI - Ionization of Mercury by Alkali Positive Ions
JF - Nature
DO - 10.1038/204987a0
DA - 1964-12-05
UR - https://www.deepdyve.com/lp/springer-journals/ionization-of-mercury-by-alkali-positive-ions-0mr0ISnOY5
SP - 987
EP - 988
VL - 204
IS - 4962
DP - DeepDyve
ER -