Refine your search:     
Report No.
 - 
Search Results: Records 1-8 displayed on this page of 8
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Quantitative hydrogen state analysis in the leached layer of soda-lime-silica glass by combination of nuclear reaction analysis and C$$_{60}$$-X-ray photoelectron spectroscopy

Suehara, Michinori*; Yamamoto, Yuichi*; Ogura, Shohei*; Fukutani, Katsuyuki

Journal of Non-Crystalline Solids, 574, p.121160_1 - 121160_4, 2021/12

Journal Articles

Focusing and spin polarization of atomic hydrogen beam

Nagaya, Yuki*; Nakatsu, Hiroki*; Ogura, Shohei*; Shimazaki, Kota*; Ueta, Hirokazu; Takeyasu, Kotaro*; Fukutani, Katsuyuki

Journal of Chemical Physics, 155(19), p.194201_1 - 194201_6, 2021/11

Journal Articles

Direct measurement of fast ortho-para conversion of molecularly chemisorbed H$$_{2}$$ on Pd(210)

Ueta, Hirokazu; Sasakawa, Yuya*; Ivanov, D.*; Ono, Satoshi*; Ogura, Shohei*; Fukutani, Katsuyuki

Physical Review B, 102(12), p.121407_1 - 121407_5, 2020/09

 Times Cited Count:0 Percentile:6.21(Materials Science, Multidisciplinary)

Ortho-to-para conversion of molecularly chemisorbed H$$_{2}$$ on a Pd(210) surface at a surface temperature of 50 K is reported. A combination of a pulsed molecular beam, photo-stimulated desorption and resonance-enhanced multiphoton ionization techniques was used for probing the change in the rotational states of molecularly chemisorbed H$$_{2}$$ on the surface. Our result shows that fast ortho-para conversion of chemisorbed H$$_{2}$$ occurs. The conversion time was experimentally determined to be about 2 s, which is in good agreement with a previous theoretical calculation. This agreement supports that the ortho-para conversion mechanism of the molecularly chemisorbed H$$_{2}$$ on Pd(210) is the two-step process based on the hyperfine-Coulomb excitation.

Journal Articles

Hydrogen distribution and electronic structure of TiO$$_{2}$$(110) hydrogenated with low-energy hydrogen ions

Ohashi, Yuki*; Nagatsuka, Naoki*; Ogura, Shohei*; Fukutani, Katsuyuki

Journal of Physical Chemistry C, 123(16), p.10319 - 10324, 2019/04

Oral presentation

Rotational-state distribution and ortho-para conversion of molecularly chemisorbed H$$_{2}$$ on Pd(210)

Ueta, Hirokazu; Sasakawa, Yuya*; Ivanov, D.*; Ono, Satoshi*; Ogura, Shohei*; Fukutani, Katsuyuki

no journal, , 

Oral presentation

A Study of ortho-para conversion of molecularly chemisorbed H$$_{2}$$ on Pd(210)

Ueta, Hirokazu; Sasakawa, Yuya*; Ivanov, D.*; Ono, Satoshi*; Ogura, Shohei*; Fukutani, Katsuyuki

no journal, , 

Surface defects such as step and kink affect surfaced reaction. While hydrogen typically chemisorbs dissociatively on a flat metal surface, it is known that hydrogen can molecularly chemisorb on stepped surfaces, such as Pd(210). Recently, we developed a technique to probe ortho-para conversion of adsorbed hydrogen which consists of a combination of a pulsed molecular beam, photo-stimulated desorption and resonance-enhanced multiphoton ionization techniques. We report a result of orho-para conversion time of molecularly chemisorbed H$$_{2}$$ on Pd(210).

Oral presentation

Measurement of ortho-para conversion time of molecularly chemisorbed H$$_{2}$$ on Pd(210)

Ueta, Hirokazu; Sasakawa, Yuya*; Ivanov, D.*; Ono, Satoshi*; Ogura, Shohei*; Fukutani, Katsuyuki

no journal, , 

no abstracts in English

Oral presentation

H$$_{2}$$ ortho-para conversion on a stepped Pd surface

Ueta, Hirokazu; Sasakawa, Yuya*; Ivanov, D.*; Ono, Satoshi*; Ogura, Shohei*; Fukutani, Katsuyuki

no journal, , 

We present a direct measurement of fast Ortho-Para conversion of molecularly chemisorbed H$$_{2}$$ on Pd(210) at a surface temperature of 50 K. The determined conversion time was about 2 sec, which is in reasonably agreement with a previous theoretical calculation. This agreement supports that ortho-para conversion mechanism of the molecularly chemisorbed H$$_{2}$$ on Pd(210) is the two-step process based on the hyperfine-Coulomb excitation.

8 (Records 1-8 displayed on this page)
  • 1