Coincidence doppler broadening of positron annihilation radiation for detection of helium in irradiated Ni and Cu

Q. Xu, T. Ishizaki, K. Sato, T. Yoshiie, S. Nagata

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A new composition analysis method, namely, coincidence Doppler broadening (CDB) of positron annihilation radiation, was employed to detect He atoms in ion irradiated Ni and neutron irradiated Cu. The results of positron lifetime and transmission electron microscopy (TEM) show that microvoids and voids were formed in ion-irradiated Ni and neutron-irradiated Cu, respectively. The results of CDB measurements indicate that He atoms were present in the microvoids and voids, even in microvoids annealed at 1273 K in ion-irradiated Ni. Coincidence Doppler broadening measurement, which is a nondestructive technique for testing materials, is effective for detecting He atoms.

Original languageEnglish
Pages (from-to)2885-2887
Number of pages3
JournalMaterials Transactions
Volume47
Issue number11
DOIs
Publication statusPublished - 2006 Nov

Keywords

  • Helium
  • Microvoids
  • Positron annihilation
  • Voids

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Coincidence doppler broadening of positron annihilation radiation for detection of helium in irradiated Ni and Cu'. Together they form a unique fingerprint.

Cite this