[en] A neutron deficient isotope ²³⁵Am has been produced via the reaction ²³⁸Pu(p,4n) ²³⁵Am by 35 MeV proton bombardment of ²³⁸Pu. The reaction products were transported by the He-jet recoil-transport apparatus. Radiochemical separations were performed by liquid-liquid extraction to isolate the americium fraction fro the mixture of the reaction products. The chemically separated Am fractions were used for the X- and gamma-ray measurements. A new neutron-deficient isotope ²³⁵Am was definitely identified from the growth and decay of its daughter, 25.3 x min ²³⁵Pu and X- γ coincidence measurements. The ²³⁵Am half-life was determined to be 15±5 min. (author)