Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control

S. Sakaguchi, T. Uesaka, T. Kawahara, T. Ogawa, L. Tang, T. Teranishi, Y. Urata, S. Wada, T. Wakui

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Proton polarization at room temperature, produced in a p-terphenyl crystal by using electron population difference in a photo-excited triplet state of pentacene, was enhanced by utilizing an intense laser with an average power of 1.5 W. It was shown that keeping the sample temperature below 300 K is critically important to prevent the rise of the spin-lattice relaxation rate caused by the laser heating. It is also reported that the magnitude of proton polarization strongly depends on the time structure of the laser pulse such as its width and the time interval between them.

    Original languageEnglish
    Pages (from-to)679-684
    Number of pages6
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume317
    Issue numberPART B
    DOIs
    Publication statusPublished - 2013 Dec 15

    Keywords

    • Dynamic nuclear polarization
    • Polarized target
    • Proton polarization
    • Room temperature
    • Unstable nuclei

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

    Fingerprint Dive into the research topics of 'Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control'. Together they form a unique fingerprint.

  • Cite this