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

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

Research output: Contribution to journalArticlepeer-review

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 - Dec 15 2013

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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