論文

査読有り
2018年2月26日

Rotational state modification and fast ortho-para conversion of H2 trapped within the highly anisotropic potential of Pd(210)

Physical Review B
  • S. Ohno
  • ,
  • D. Ivanov
  • ,
  • S. Ogura
  • ,
  • M. Wilde
  • ,
  • E. F. Arguelles
  • ,
  • W. A. Diño
  • ,
  • H. Kasai
  • ,
  • K. Fukutani

97
8
開始ページ
085436-1
終了ページ
085436-5
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.97.085436
出版者・発行元
American Physical Society

© 2018 American Physical Society. The rotational state and ortho-para conversion of H2 on a Pd(210) surface is investigated with rotational-state-selective temperature-programmed desorption (RS-TPD) and theoretical calculations. The isotope dependence of TPD shows a higher desorption energy for D2 than that for H2, which is ascribed to the rotational and zero-point vibrational energies. The RS-TPD data show that the desorption energy of H2(J=1) (J: rotational quantum number) is higher than that of H2(J=0). This is due to the orientationally anisotropic potential confining the adsorbed H2, which is in agreement with theoretical calculations. Furthermore, the H2 desorption intensity ratio in J=1 and J=0 indicates fast ortho-para conversion in the adsorption state, which we estimate to be of the order of 1 s.

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.97.085436
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043252389&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85043252389&origin=inward
URL
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.085436
ID情報
  • DOI : 10.1103/PhysRevB.97.085436
  • ISSN : 2469-9950
  • eISSN : 2469-9969
  • ORCIDのPut Code : 45870418
  • SCOPUS ID : 85043252389

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