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
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- 巻
- 97
- 号
- 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
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- 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
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- DOI : 10.1103/PhysRevB.97.085436
- ISSN : 2469-9950
- eISSN : 2469-9969
- ORCIDのPut Code : 45870418
- SCOPUS ID : 85043252389