First observation of K X-rays from pp atoms

Academic Article


  • K and L series X-rays have been observed from pp atoms formed in hydrogen gas at NTP in association with annihilations into neutral particles. The total K X-ray yield is (6.5 ± 3.2) × 10-3 per stopped antiproton. A model-dependent fit of the K X-ray spectrum gives a Kα energy of 8.9±0.3 keV, corresponding to a strong interaction shift of (-0.5±0.3) keV. © 1985.
  • Authors

    Published In

  • Physics Letters B  Journal
  • Digital Object Identifier (doi)

    Author List

  • Ahmad S; Amsler C; Armenteros R; Auld EG; Axen D; Bailey D; Barlag S; Beer GA; Bizot JC; Caria M
  • Start Page

  • 333
  • End Page

  • 339
  • Volume

  • 157
  • Issue

  • 4