Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation
This article reviews our recent work on photo-stimulated ion desorption (PSID) from molecules condensed at low temperature. We have used electron-ion coincidence (EICO) spectroscopy combined with synchrotron radiation. The history and present status of the EICO apparatus is described, as well as our...
Збережено в:
| Опубліковано в: : | Физика низких температур |
|---|---|
| Дата: | 2003 |
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
|
| Теми: | |
| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128820 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation / Kazuhiko Mase, Mitsuru Nagasono, Shin-ichiro Tanaka, Tetsuji Sekitani, Shin-ichi Nagaoka // Физика низких температур. — 2003. — Т. 29, № 3. — С. 321-341. — Бібліогр.: 106 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
nasplib_isofts_kiev_ua-123456789-128820 |
|---|---|
| record_format |
dspace |
| spelling |
Kazuhiko Mase Mitsuru Nagasono Shin-ichiro Tanaka Tetsuji Sekitani Shin-ichi Nagaoka 2018-01-14T09:15:17Z 2018-01-14T09:15:17Z 2003 Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation / Kazuhiko Mase, Mitsuru Nagasono, Shin-ichiro Tanaka, Tetsuji Sekitani, Shin-ichi Nagaoka // Физика низких температур. — 2003. — Т. 29, № 3. — С. 321-341. — Бібліогр.: 106 назв. — англ. 0132-6414 PACS: 79.20.La, 07.81.+a https://nasplib.isofts.kiev.ua/handle/123456789/128820 This article reviews our recent work on photo-stimulated ion desorption (PSID) from molecules condensed at low temperature. We have used electron-ion coincidence (EICO) spectroscopy combined with synchrotron radiation. The history and present status of the EICO apparatus is described, as well as our recent investigations of condensed H₂O, NH₃, CH₃CN, and CF₃CH₃. Auger electron photoion coincidence (AEPICO) spectra of condensed H₂O at the O:1s ionization showed that H⁺ desorption was stimulated by O:KVV Auger processes leading to two - hole states (normal- Auger stimulated ion desorption (ASID) mechanism). The driving forces for H⁺ desorption were attributed to the electron missing in the O - H bonding orbitals and the effective hole-hole Coulomb repulsion. The normal ASID mechanism was also demonstrated for condensed NH₃. The H⁺ desorption at the 4a₁ ← O(N):1s resonance of both condensed H₂O and condensed NH₃ was found to be greatly enhanced. Based on the AEPICO spectra the following four-step mechanism was proposed: (1) the 4a₁ ← 1s transition, (2) extension of the HO - H (H₂N - H) distance within the lifetime of the (1s)⁻¹(4a1)¹ state, (3) spectator Auger transitions leading to (valence)⁻²(4a₁)¹ states, and (4) H⁺ desorption. The enhancement of the H⁺ desorption yield was attributed to the repulsive potential surface of the (1s) - 1(4a₁)¹ state. At the 3p ← O:1s resonance of condensed H₂O, on the other hand, the H⁺ yield was found to be decreased. The AEPICO spectra showed that the H⁺ desorption was stimulated by spectator Auger transitions leading to (valence)⁻²(3p)¹ states. The decrease in the H⁺ yield was attributed to a reduction in the effective hole-hole Coulomb repulsion due to shielding by the 3p electron. Photoelectron photoion coincidence (PEPICO) spectra of condensed H₂O showed that the core level of the surface H₂O responsible for the H⁺ desorption was shifted by 0.7 eV from that of the bulk H₂O. The H⁺ desorption from condensed CH₃CN was also investigated. In a study of condensed CF₃CH₃ using PEPICO spectroscopy, site-specific ion desorption was directly verified; that is, H⁺ and CH₃⁺ desorption was predominant for the C:1s photoionization at the -CH₃ site, while C₂Hn⁺, CFCHm⁺, and CF₃⁺ desorption was predominantly induced by the C:1s photoionization at the -CF₃ site. These investigations demonstrate that EICO spectroscopy combined with synchrotron radiation is a powerful tool for studying PSID of molecules condensed at low temperature. The «we» in this paper is not necessarily synonymous with only K.M., M.N., S.T., T.S., and S.N., but also represents contributions from various combinations of the authors’ collaborators. Their contributions are greatly acknowledged. We also express our sincere thanks to the members of the UVSOR and PF synchrotron radiation facilities for their valuable help during the course of the experiments. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Electronically Induced Phenomena: Low Temperature Aspects Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation |
| spellingShingle |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation Kazuhiko Mase Mitsuru Nagasono Shin-ichiro Tanaka Tetsuji Sekitani Shin-ichi Nagaoka Electronically Induced Phenomena: Low Temperature Aspects |
| title_short |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation |
| title_full |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation |
| title_fullStr |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation |
| title_full_unstemmed |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation |
| title_sort |
ion desorption from molecules condensed at low temperature: a study with electron-ion coincidence spectroscopy combined with synchrotron radiation |
| author |
Kazuhiko Mase Mitsuru Nagasono Shin-ichiro Tanaka Tetsuji Sekitani Shin-ichi Nagaoka |
| author_facet |
Kazuhiko Mase Mitsuru Nagasono Shin-ichiro Tanaka Tetsuji Sekitani Shin-ichi Nagaoka |
| topic |
Electronically Induced Phenomena: Low Temperature Aspects |
| topic_facet |
Electronically Induced Phenomena: Low Temperature Aspects |
| publishDate |
2003 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
This article reviews our recent work on photo-stimulated ion desorption (PSID) from molecules condensed at low temperature. We have used electron-ion coincidence (EICO) spectroscopy combined with synchrotron radiation. The history and present status of the EICO apparatus is described, as well as our recent investigations of condensed H₂O, NH₃, CH₃CN, and CF₃CH₃. Auger electron photoion coincidence (AEPICO) spectra of condensed H₂O at the O:1s ionization showed that H⁺ desorption was stimulated by O:KVV Auger processes leading to two - hole states (normal- Auger stimulated ion desorption (ASID) mechanism). The driving forces for H⁺ desorption were attributed to the electron missing in the O - H bonding orbitals and the effective hole-hole Coulomb repulsion. The normal ASID mechanism was also demonstrated for condensed NH₃. The H⁺ desorption at the 4a₁ ← O(N):1s resonance of both condensed H₂O and condensed NH₃ was found to be greatly enhanced. Based on the AEPICO spectra the following four-step mechanism was proposed: (1) the 4a₁ ← 1s transition, (2) extension of the HO - H (H₂N - H) distance within the lifetime of the (1s)⁻¹(4a1)¹ state, (3) spectator Auger transitions leading to (valence)⁻²(4a₁)¹ states, and (4) H⁺ desorption. The enhancement of the H⁺ desorption yield was attributed to the repulsive potential surface of the (1s) - 1(4a₁)¹ state. At the 3p ← O:1s resonance of condensed H₂O, on the other hand, the H⁺ yield was found to be decreased. The AEPICO spectra showed that the H⁺ desorption was stimulated by spectator Auger transitions leading to (valence)⁻²(3p)¹ states. The decrease in the H⁺ yield was attributed to a reduction in the effective hole-hole Coulomb repulsion due to shielding by the 3p electron. Photoelectron photoion coincidence (PEPICO) spectra of condensed H₂O showed that the core level of the surface H₂O responsible for the H⁺ desorption was shifted by 0.7 eV from that of the bulk H₂O. The H⁺ desorption from condensed CH₃CN was also investigated. In a study of condensed CF₃CH₃ using PEPICO spectroscopy, site-specific ion desorption was directly verified; that is, H⁺ and CH₃⁺ desorption was predominant for the C:1s photoionization at the -CH₃ site, while C₂Hn⁺, CFCHm⁺, and CF₃⁺ desorption was predominantly induced by the C:1s photoionization at the -CF₃ site. These investigations demonstrate that EICO spectroscopy combined with synchrotron radiation is a powerful tool for studying PSID of molecules condensed at low temperature.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128820 |
| citation_txt |
Ion desorption from molecules condensed at low temperature: A study with electron-ion coincidence spectroscopy combined with synchrotron radiation / Kazuhiko Mase, Mitsuru Nagasono, Shin-ichiro Tanaka, Tetsuji Sekitani, Shin-ichi Nagaoka // Физика низких температур. — 2003. — Т. 29, № 3. — С. 321-341. — Бібліогр.: 106 назв. — англ. |
| work_keys_str_mv |
AT kazuhikomase iondesorptionfrommoleculescondensedatlowtemperatureastudywithelectronioncoincidencespectroscopycombinedwithsynchrotronradiation AT mitsurunagasono iondesorptionfrommoleculescondensedatlowtemperatureastudywithelectronioncoincidencespectroscopycombinedwithsynchrotronradiation AT shinichirotanaka iondesorptionfrommoleculescondensedatlowtemperatureastudywithelectronioncoincidencespectroscopycombinedwithsynchrotronradiation AT tetsujisekitani iondesorptionfrommoleculescondensedatlowtemperatureastudywithelectronioncoincidencespectroscopycombinedwithsynchrotronradiation AT shinichinagaoka iondesorptionfrommoleculescondensedatlowtemperatureastudywithelectronioncoincidencespectroscopycombinedwithsynchrotronradiation |
| first_indexed |
2025-11-29T12:01:14Z |
| last_indexed |
2025-11-29T12:01:14Z |
| _version_ |
1850854877582852096 |