I'm looking at the 4E book and it's almost a word for word lift in the 5e version except where the 4E book says "it" and has an extra blurb to describe the Spirit Zapper as a modified Offensive Mana Barrier, the 5E book describes the Spirit Zapper as the Spirit Barrier and doesn't have any extra blurb on the difference between these two spells.
4E
Spirit Barrier (Environmental, Area)
Type: M • Range: LOS (A) • Duration: S • DV: (F ÷ 2)
Spirit zapper (Environmental, Area)
Type: M • Range: LOS (A) • Duration: S • DV: (F ÷ 2) + 2
This modified version of the Mana barrier spell (p. 204,
SR4) only works against spirits and spirit powers. When cast on
the physical plane, it will impede materialized spirits. It has no
effect on spells, foci, or non-spirit dual beings and astral forms.
Spirit Zapper is a similar restricted variant of the
Offensive Mana Barrier (p. 174).
5E:
SPIRIT BARRIER
(ENVIRONMENTAL, AREA)
Type: P Range: LOS (A)
Duration: S Drain: F – 1
SPIRIT ZAPPER
(ENVIRONMENTAL, AREA)
Type: P Range: LOS (A)
Duration: S Drain: F + 1
This is modified version of the Mana Barrier spell (p. 294,
SR5) designed to work against spirits and spirit powers. When
cast on the physical plane, Spirit Zapper impedes materialized
spirits. It has no effect on spells, foci, or non-spirit dual beings
and astral forms.