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Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges

Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges

This article reviews our recent works on the ion desorption from adsorbed and condensed molecules at low temperature following the core-level photoexcitations using synchrotron soft x-rays. The systems investigated here are adsorbed molecules with relatively heavy molecular weight containing third-r...

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Main Author: Yuji Baba
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2003
Series:Физика низких температур
Subjects:
Electronically Induced Phenomena: Low Temperature Aspects
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/128819
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spelling irk-123456789-1288192018-01-15T03:04:45Z Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges Yuji Baba Electronically Induced Phenomena: Low Temperature Aspects This article reviews our recent works on the ion desorption from adsorbed and condensed molecules at low temperature following the core-level photoexcitations using synchrotron soft x-rays. The systems investigated here are adsorbed molecules with relatively heavy molecular weight containing third-row elements such as Si, P, S, and Cl. Compared with molecules composed of second-row elements, the highly element-specific and site-specific fragment-ion desorptions were observed when we tune the photon energy at the dipole-allowed 1s→s*(3p*) resonance. On the basis of the resonance Auger decay spectra around the 1s ionization thresholds, the observed highly specific ion desorption is interpreted by the localization of the excited electrons (here we call as "spectator electrons") in the antibonding s* orbital. In order to separate the direct photo-induced process from the indirect processes triggered by the secondary electrons, the photon-stimulated ion desorption was also investigated in well-controlled mono- and multilayered molecules. The results confirmed that the resonant photoexcitation not in the substrate but in the thin films of adsorbates plays a significant role in the realization of the highly specific ion desorption. 2003 Article Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges / Yuji Baba // Физика низких температур. — 2003. — Т. 29, № 3. — С. 303-320. — Бібліогр.: 75 назв. — англ. 0132-6414 PACS: 79.20.La, 29.30.Kv http://dspace.nbuv.gov.ua/handle/123456789/128819 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Electronically Induced Phenomena: Low Temperature Aspects
Electronically Induced Phenomena: Low Temperature Aspects
spellingShingle Electronically Induced Phenomena: Low Temperature Aspects
Electronically Induced Phenomena: Low Temperature Aspects
Yuji Baba
Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges
Физика низких температур
description This article reviews our recent works on the ion desorption from adsorbed and condensed molecules at low temperature following the core-level photoexcitations using synchrotron soft x-rays. The systems investigated here are adsorbed molecules with relatively heavy molecular weight containing third-row elements such as Si, P, S, and Cl. Compared with molecules composed of second-row elements, the highly element-specific and site-specific fragment-ion desorptions were observed when we tune the photon energy at the dipole-allowed 1s→s*(3p*) resonance. On the basis of the resonance Auger decay spectra around the 1s ionization thresholds, the observed highly specific ion desorption is interpreted by the localization of the excited electrons (here we call as "spectator electrons") in the antibonding s* orbital. In order to separate the direct photo-induced process from the indirect processes triggered by the secondary electrons, the photon-stimulated ion desorption was also investigated in well-controlled mono- and multilayered molecules. The results confirmed that the resonant photoexcitation not in the substrate but in the thin films of adsorbates plays a significant role in the realization of the highly specific ion desorption.
format Article
author Yuji Baba
author_facet Yuji Baba
author_sort Yuji Baba
title Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges
title_short Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges
title_full Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges
title_fullStr Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges
title_full_unstemmed Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges
title_sort element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the k-edges
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2003
topic_facet Electronically Induced Phenomena: Low Temperature Aspects
url http://dspace.nbuv.gov.ua/handle/123456789/128819
citation_txt Element-specific and site-specific ion desorption from adsorbed molecules by deep core-level photoexcitation at the K-edges / Yuji Baba // Физика низких температур. — 2003. — Т. 29, № 3. — С. 303-320. — Бібліогр.: 75 назв. — англ.
series Физика низких температур
work_keys_str_mv AT yujibaba elementspecificandsitespecificiondesorptionfromadsorbedmoleculesbydeepcorelevelphotoexcitationatthekedges
first_indexed 2023-10-18T20:56:12Z
last_indexed 2023-10-18T20:56:12Z
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