Dynamic nuclear polarization of high-density atomic hydrogen in solid mixtures of molecular hydrogen isotopes. Academic Article uri icon

abstract

  • We report on magnetic resonance studies of high-density atomic hydrogen and deuterium in solid hydrogen matrices at temperatures below 1 K. Average concentrations of H atoms 310(19)cm(-3) are obtained in chemical tunneling reactions of isotope exchange with D atoms. The products of these reactions are closely located pairs of H atoms near D2 molecules with strong exchange interactions. We discovered a dynamic nuclear polarization effect on H atoms created by pumping the center of the H electron spin resonance spectrum, similar to the Overhauser effect in metals. Our results indicate that H atoms may be arranged inside molecular matrices at separations equivalent to local concentrations of 2.610(21)cm(-3). This opens up a way to build a metallic state of atomic hydrogen at zero pressure.

published proceedings

  • Phys Rev Lett

altmetric score

  • 0.5

author list (cited authors)

  • Sheludiakov, S., Ahokas, J., Jrvinen, J., Zvezdov, D., Vainio, O., Lehtonen, L., ... Lee, D. M.

citation count

  • 8

complete list of authors

  • Sheludiakov, S||Ahokas, J||J√§rvinen, J||Zvezdov, D||Vainio, O||Lehtonen, L||Vasiliev, S||Mao, S||Khmelenko, VV||Lee, DM

publication date

  • December 2014