Residence sites of 19f implants in carbon allotropes

K. Bharuth-Ram, S. Connell, J. P.F. Sellschop, M. Stemmet, H. Appel

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The (p, p') reaction with a pulsed proton beam has been used in in-beam TDPAD measurements to excite and recoil implant 19F ions into various carbon allotropes (single and polycrystalline graphite and vitreous and colloidal carbon). Spin rotation R (t) spectra generated from delayed time spectra of the l9F 197 keV gamma ray show that the implants take up two characteristic residence sites in the host samples. One site is sharply defined (low spread δ), and has a quadrupole coupling frequency of vq ≈ 57 MHz; the other, of lower vq, is more diffuse (large δ). The parameters of the electric field gradients at the two implant sites in the carbon allotropes are compared with similar measurements on 19F in diamond, Si and Ge hosts, and in several F-C compounds.

Original languageEnglish
Pages (from-to)73-80
Number of pages8
JournalRadiation Effects and Defects in Solids
Issue number1
Publication statusPublished - 1 May 1989
Externally publishedYes


  • TD-PAD
  • carbon allotropes
  • fluorine
  • lattice position

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • General Materials Science
  • Condensed Matter Physics


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