Optimization of laser parameters for polarizing protons in naphthalene crystals

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

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)


    Protons in a crystal of naphthalene doped with pentacene have been polarized to 37% in a magnetic field of 0.3 T and at a temperature of 100 K. In order to improve the proton polarization further, a study to find an optimal condition for polarizing protons has been carried out by using a proton polarizing system with a cylindrical microwave cavity. As a part of the study, the dependencies of the polarization rate at an early stage of the build-up and of the relaxation rate during laser irradiation on the operation current of the laser have been measured.

    Original languageEnglish
    Pages (from-to)182-185
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Issue number1-2 SPEC. ISS.
    Publication statusPublished - 2004 Jun 21


    • Aromatic molecule
    • Polarized target
    • Relaxation

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation


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