Abstract
The time-dependent expectation value of the triplet metastable He atom is obtained by starting from the singlet state and solving the time-dependent Schrödinger equation directly, to the eighth-order of V, where V is the transfer integral between the conduction electron state and the 2s state of the He atom. The results show that rapid singlet-triplet conversion on the low work-function metal surface occurs through the valence fluctuation state. The quasi-static approximation is demonstrated to be valid to the eighth-order of V. The previously conjectured closed form of the transition rate for the conversion is confirmed.
| Original language | English |
|---|---|
| Pages (from-to) | 127-132 |
| Number of pages | 6 |
| Journal | Surface Science |
| Volume | 363 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Aug 1 1996 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
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Valence fluctuation state of a metastable He atom beam on a metal surface, and singlet-triplet conversion. / Kawai, Hiroshi; Yoshimori, A.; Nakayama, M.
In: Surface Science, Vol. 363, No. 1-3, 01.08.1996, p. 127-132.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Valence fluctuation state of a metastable He atom beam on a metal surface, and singlet-triplet conversion
AU - Kawai, Hiroshi
AU - Yoshimori, A.
AU - Nakayama, M.
PY - 1996/8/1
Y1 - 1996/8/1
N2 - The time-dependent expectation value of the triplet metastable He atom is obtained by starting from the singlet state and solving the time-dependent Schrödinger equation directly, to the eighth-order of V, where V is the transfer integral between the conduction electron state and the 2s state of the He atom. The results show that rapid singlet-triplet conversion on the low work-function metal surface occurs through the valence fluctuation state. The quasi-static approximation is demonstrated to be valid to the eighth-order of V. The previously conjectured closed form of the transition rate for the conversion is confirmed.
AB - The time-dependent expectation value of the triplet metastable He atom is obtained by starting from the singlet state and solving the time-dependent Schrödinger equation directly, to the eighth-order of V, where V is the transfer integral between the conduction electron state and the 2s state of the He atom. The results show that rapid singlet-triplet conversion on the low work-function metal surface occurs through the valence fluctuation state. The quasi-static approximation is demonstrated to be valid to the eighth-order of V. The previously conjectured closed form of the transition rate for the conversion is confirmed.
UR - http://www.scopus.com/inward/record.url?scp=0030206935&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030206935&partnerID=8YFLogxK
U2 - 10.1016/0039-6028(96)00120-3
DO - 10.1016/0039-6028(96)00120-3
M3 - Article
AN - SCOPUS:0030206935
VL - 363
SP - 127
EP - 132
JO - Surface Science
JF - Surface Science
SN - 0039-6028
IS - 1-3
ER -