The intramultiplet mixing processes of Zn(43PJ) by collisions with4He and3He were studied by employing pulsed laser techniques. The following cross sections were obtained: Zn(43P1)+4Herarr;Zn(43P2)+4He: 3.1; Zn(43P1)+4Herarr;Zn(43P0)+4He: 1.5; Zn(43P1)+3Herarr;Zn(43P2)+3He: 4.7; Zn(43P1)+3Herarr;Zn(43P0)+3He: 1.8; in units of 10minus;17cm2. A quantum closehyphen;coupling calculation was carried out by assuming various interaction potentials. The cross sections for the production of Zn(43P2) from Zn(43P1) could be well reproduced by the calculation for both4He and3He. On the other hand, the calculated cross sections for the production of Zn(43P0) were found to be always smaller than the experimental ones.
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