Proton polarizing system with Ar-ion laser for p→-RI scattering experiments

T. Wakui, M. Hatano, H. Sakai, T. Uesaka, A. Tamii

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


A proton polarizing system for use in scattering experiments with radioactive isotope beams is described. Protons in a naphthalene crystal doped with pentacene are polarized in a magnetic field of 0.3 T at 100 K by transferring a large population difference among the photo-excited triplet states of pentacene to the hydrogen nuclei. An Ar-ion laser, which demands minimal maintenance during scattering experiments, is employed to excite the pentacene molecules. A proton polarization of 37% is obtained.

Original languageEnglish
Pages (from-to)521-534
Number of pages14
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
Publication statusPublished - 2005 Sep 21
Externally publishedYes


  • Aromatic molecules
  • Polarized target
  • Unstable nuclei

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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