The Moscow Institute for Nuclear Research atomic‐beam type source of polarized negative hydrogen ions is described. The production of H−ions is based on the resonant charge exchange of polarized thermal hydrogen atoms and D−ions in deuterium plasma. Improvements in the D−plasma source are outlined. The polarized source produces a pulsed H−beam with a peak current up to 1 mA and a pulse duration of 180 &mgr;s at a repetition rate of 10 Hz. The normalized emittance for 90% of the beam particles is 1.8 &pgr; mm mrad. The polarimeter of low energy H−ions is also described. The polarization of the H−ions was measured to be 0.87±0.02. ©1996 American Institute of Physics.