Emission $eacute$lectronique secondaire d'une cible de molybd$egrave$ne bombard$eacute$e par des ions positifs et n$eacute$gatifs d'un m$ecirc$me $eacute$l$eacute$ment

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Abstract
The variation of the apparent coefficient of secondary emission of molybdenum bombarded by Cl+, Cl−, O+, O−, H+ and H− ions was determined as a function of the cleanliness of the surface and the energy and incidence of the ions. These measurements, performed at a pressure lower than 1 ntorr, show that the kinetic emission is the same in the case of positive and negative ions of the same element, in agreement with the theory of Parilis and Kishinevskii. Finally the high value of the apparent emission under bombardment of H− ions is interpreted by taking account of the phenomenon of detachment.
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