A judge sentenced Eleazar Alcantar to 69 years in prison for the May 2012 shooting.
Prosecutors say Alcantar was upset with his wife. The two lived together at the Woodville Labor Camp near Porterville.
Officers say after Alcantar shot and killed his wife, he also used the gun to assault two of their children. He was found guilty of first degree murder and a special allegation for using a firearm.
At his sentencing, his children spoke about the crime, with the help of a victim's witness advocate.
Gladys Alcantar said, "I always caught myself thinking what could I have done different? Could I have saved her? Could things have been different with one action. I haven't felt I have a home anymore my home was with her now that she's not here I feel a part of me died the same day she died."
Alcantar has a prior conviction for spousal abuse.