Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium

H. Iijima, T. Asonuma, T. Hirose, M. Irako, K. Kadoya, T. Kumita, B. Matsumoto, K. Wada, M. Washio

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τo-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τo-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.

Original languageEnglish
Pages (from-to)641-648
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume483
Issue number3
DOIs
Publication statusPublished - 2002 May 11

Keywords

  • Buncher
  • Lifetime measure
  • Ortho-positronium
  • Slow positron beam

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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