Cs

2

CrO

4

CsI and CsF as target additives in Hiconex 834 source have been investigated. It is shown that adding Cs

2

CrO

4

in suitable ratios can improve Cs coverage and obtain the effect of simultaneous spraying of O

2

. The intensities of Fe

-

Ag

-

and Cu

-

ion beams are greater than those obtained with pure Fe

Ag and Cu targets

by 10

6 and 3.5 times

respectively. Negative beams of halogens can be obtained conveniently by mixing corresponding Cs halides with metal to form sputter targets. In the Munich high current source

a Fe target with an admixture of 5% Fe

2

O

3

produces about twice the Fe

-

beam current as compared to that from a pure Fe target.