H-3 AND HE-3 ELECTROMAGNETIC FORM-FACTORS

We report the results of three experiments on elastic electron scatter ing from H-3 and He-3. A detailed description of the experiments and t he data obtained is given. We have performed a combined analysis of th e world data on H-3 and He-3. This analysis gives a complete experimen tal information on the trinucleon electromagnetic form factors up to q (2) = 30 fm(-2), and also provides a separation into the isoscalar and isovector form factors. The results are compared to selected calculat ions that include nucleonic and mesonic degrees of freedom.