Rock Album of the Week: The Neon Judgment, ''Blood and Thunder'' (Play It Again Sam/Wax Trax Records, 1659 North Damen Avenue, Chicago, Ill. 60647). Europeans who are infatuated with American culture brew strange hybrids. On ''Blood and Thunder,'' the Neon Judgment, from Belgium, throws together the mechanical dance beat and guttural ricocheting vocals of industrial rock with blues harmonica and folk-rock guitars. Half the album dispenses passable but ordinary industrial rock, all electronic drums and paranoia, with lyrics in accented English. But at its best - in ''Don't Wish Me Luck,'' ''1313'' (a prospective dance craze) and ''Facing Pictures'' - the Neon Judgment's jumble of citified electronics and country-fried Americana is just off kilter enough to provide some new thrills.