SANTA MONICA, Calif. (AP) _ A Japanese woman who ritually drowned her two children after being shamed by her husband's adultery ''is likely to experience punishment as long as she lives,'' says the judge who placed her on probation.

Fumiko Kimura, 33, who emigrated from Japan 14 years ago, was ordered released from jail Thursday after Superior Court Judge Robert W. Thomas placed her on five years' probation and ordered her to undergo psychiatric treatment.

Thomas also sentenced her to one year in county jail, including time already served, which meant that no further jail time was required because of allotted time off for good behavior.

''Everybody seems to agree Mrs. Kimura is likely to experience punishment as long as she lives,'' he said. ''I feel that further incarceration would serve no useful purpose.'' The prosecution agreed to the sentence.

Mrs. Kimura, who pleaded no contest to two counts of voluntary manslaughter charges in October, carried her two children into the Pacific Ocean in a suicide attempt called ''oyako shinju'' in Japan.

''The courts can never punish her as much as she punishes herself,'' her attorney, Gerald Klausner, said after the sentencing. ''I certainly feel it was an appropriate call by the judge. He made a very difficult but correct call on this case.''

Klausner described Mrs. Kimura as quietly appreciative and said she and her husband ''plan to reunite. There was never any doubt about that.''

Investigators said Mrs. Kimura's actions were prompted by feelings of guilt over the infidelity of her husband.

She had been charged with murder and felony child endangering, but defense and prosecution attorneys agreed her mental state was not that of a murderer's when she carried her children into the ocean off Santa Monica on Jan. 29.

She walked into the ocean clutching her 6-month-old daughter, Yuri, and holding the hand of her 4-year-old son, Kazutaka. Mrs. Kimura was pulled unconscious from the surf by two teen-agers.

Under Japanese law, parents who survive oyako shinju can face murder charges and a death penalty or prison but are usually lightly punished. No charges are filed if a parent is considered mentally deranged at the time.

Klausner said petitions containing between 25,000 and 30,000 signatures from people in Japan, Canada and Germany, urging a lenient sentence, were presented to the judge.

Deputy District Attorney Lauren Weis said the no contest plea was acceptable because six psychiatric reports prepared for the defense ''reflected that her mental state at the time of the crime was not that which was required for murder charges.''

''I really believe the pain and suffering Mrs. Kimura has inside of her is sufficient punishment,'' Ms. Weis told the judge. She said she had learned Mrs. Kimura ''was a very, very loving mother. From everything I know, her children were her entire life.

''She was psychotically deranged at the time of the crime.... Sending her to state prison would show us as a lesser society.''

When Mrs. Kimura left the courtroom, she smiled, bowed and said thank you to the crowd.

Klausner said Itsuroku Kimura, 40, a restaurant worker, had ''forgiven his wife. He wants his wife back.''

He said Kimura would undergo therapy with his wife.