[sup 3]He([ital n],[gamma])[sup 4]He cross section and the photodisintegration of [sup 4]He

The absolute cross section of the [sup 3]He([ital n],[gamma])[sup 4]He reaction was measured at five energies between [ital E][sub [ital n]]=0.14--2.0 MeV to an accuracy of [similar to][plus minus]10%. The [similar to]21 MeV gamma rays produced in a [sup 3]He gas target were detected at 90[degree] with respect to the beam direction. The results are discussed in light of previous measurements of the two-body photodisintegration of [sup 4]He.