Peter Jok scored 14 points and Jarrod Uthoff had 11 points and four blocked shots for the Hawkeyes (17-10, 8-6 Big Ten), who swept the season series against Nebraska (13-14, 5-10) and sent the Huskers to their fifth straight loss and seventh in eight games.
Iowa, which shot 50 percent and made 10 3-pointers, was the first Nebraska opponent in 38 games to make at least half its shots from the floor.
Shavon Shields, who had 25 points in the first meeting with the Hawks, was held to three points on 1-of-6 shooting.
Iowa's White also made three steals and had his first double-double since he had 15 points and 12 rebounds in a November loss to Syracuse.
Iowa came to Lincoln 3-5 in its last eight games and in need of a win to help its NCAA tournament chances.
The Huskers put up little resistance on their Legends Weekend. They wore throwback jerseys from the 1954-55 season and honored some 50 former players. The party turned into a dud, though, as the Hawkeyes led all the way and by never fewer than 10 points after White hit a 3-pointer with 4:48 left in the first half.
The loss was Nebraska's most lopsided of the season and its worst at home since Ohio State put a 34-point whipping on the Huskers on Jan. 21, 2012.
The Hawks held Nebraska without a field goal for 8 1/2 minutes in the first half, and Jok hit a couple 3s as the Hawks built an early 13-point lead. The Huskers cut it to 21-14, and then White scored seven straight points to start a 21-2 run that put the Hawks up 26 points at halftime.
Nebraska coach Tim Miles said in his halftime tweet, "A 21-2 run to end the first is disgusting; We have to fight our tails off to get back into this game."
The Huskers never got closer than 21 points, and Iowa's lead grew to as much as 31 points.
*** Posted by Josh Harvey ***