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2006 Fiscal Year Final Research Report Summary

Precision Spectroscopy of Pionic Atoms

Research Project

Project/Area Number 16340083
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

ITAHASHI Kenta  The Institute of Physical and Chemical Research, Advanced Meson Science Laboratory, Research Scientist (30322093)

Project Period (FY) 2004 – 2006
Keywordspi meson / strong interaction / origin of mass / high precision spectroscopy
Research Abstract

As entitled, we have started investigations on the possible methods to approach high precision spectroscopy of pionic atoms in order to achieve more accurate information on the strong interaction between the pion and nuclei. The investigations told that the RI beam factory at the RIKEN (RIBF) is the most suitable facility after necessary improvements on the method of (d,3He) nuclear reactions. We have thus prepared detector system and the targets. The expected spectral resolution will become about 200 keV (FWHM). We have proposed an experiment to make spectroscopy of pionic tin 121 atom. The international Program Advisory Committee of the RIKEN evaluated the proposal as conditionally approved. The required condition is the high intensity beam of 10^12/s extracted from the accelerator.
Presently, RIBF accelerator has only 1/100 intensity of the designed and performance of the experiment is difficult. The intensity will be recovered within a year or so. The experiment will start on the completion of the improvements on the accelerator.

  • Research Products

    (2 results)

All 2004

All Journal Article (2 results)

  • [Journal Article] Precision spectroscopy of pionic ls states of Sn nuclei and evidence for partial restoration of chiral symmetry in the nuclear medium2004

    • Author(s)
      K. Suzuki, et. al.
    • Journal Title

      Physical Reviery Letters 92

      Pages: 072302

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Precision spectroscopy of pionic is states of Sn nucleiand evidence for partial restoration of chiral symmetry in the nuclear medium2004

    • Author(s)
      Ken Suzuki
    • Journal Title

      Physical Relview Letters 92

      Pages: 072302

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2010-02-04  

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