Campbell Soup Co. is targeting active Gen X and Gen Y-ers with a line of energy juices called Invigor8, marking the brand’s first entry into the $1 billion energy-drink segment. The single-serve juices, Invigor8 Energy Boost and Invigor8 Nutrition Boost, will be backed by an estimated $15 million outdoor and radio campaign breaking in the first quarter of 2004. The work will bear the tagline, “Positively charged.” WPP’s Young & Rubicam in New York, handles the account.