Abstract
Nitrogen bombarded by deutons emits three alpha-particle and two proton groups. For deutons of maximum energy 1.4 mv traversing an air target the alpha-particle groups have ranges of 6.9, 7.8 and 12.7 cm. The reaction involved is +→+, and the transmutation energy, derived from the long range group, in conjunction with the precise mass spectrograph determinations of , and yields for the mass of the value 14.0069. The 6.9 and 7.8 cm groups indicate the existence of excited levels in at 3.8 and 4.7 mv. The proton groups from a thin air target bombarded by 1.25 mv deutons have ranges of 24 and 85 cm. The reaction involved is +→+. The transmutation energy of this reaction yields for the mass of the value 15.0041. The 24 cm group indicates an excitation level in at 4.7 mv. For 1.2 mv deutons, the effective nuclear collision cross sections for the alpha-particle and proton reactions are about and 3 × , respectively.
- Received 2 January 1935
DOI:https://doi.org/10.1103/PhysRev.47.273
©1935 American Physical Society