Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electron-transfer processes in fast ion-atom collisions
Stockholm University, Faculty of Science, Department of Physics.
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The subject of this thesis is experimental studies of electron-transfer processes in ion-atom collisions at velocities significantly higher than typical orbital velocities of electrons in bound states of atoms or molecules. The experimental technique applied combines the high beam intensity of heavy-ion storage rings with a supersonic gas-jet target equipped with a recoil-ion-momentum spectrometer. In singleelectron capture to fast protons from helium atoms, we have for the first time achieved a complete separation of the kinematic and Thomas transfer mechanisms and are able to perform a quantitative comparison with the many theoretical results on a much more detailed level than what was previously possible. For the process of transfer ionization in proton-helium collisions we have determined the velocity dependence of the Thomas transfer ionization cross section to be the expected vp-11 when the projectile velocity, vp, is sufficiently high. Further, we have determined the velocity-dependent probability for shake-off of the second electron from helium provided that the first one is transferred in a kinematic capture process. Finally, we have considered collisions between protons and hydrogen molecules. Here we have found a strong variation in the cross section for transfer and excitation processes when the angle between the direction of the incoming projectile and the internuclear axis of the target molecule is varied. The variation can be explained as a result of quantum mechanical interference related to the two indistinguishable atomic centers of the molecule.

Place, publisher, year, edition, pages
Stockholm: Fysikum , 2005. , 59 p.
Keyword [en]
Electron transfer processes fast ion atom collisions hydrogen helium
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:su:diva-732ISBN: 91-7155-165-4 (print)OAI: oai:DiVA.org:su-732DiVA: diva2:198048
Public defence
2005-12-05, sal FA31, AlbaNova universitetscentrum, Roslagstullsbacken 21, Stockholm, 10:00
Opponent
Supervisors
Available from: 2005-11-09 Created: 2005-11-09Bibliographically approved
List of papers
1. Experimental separation of the (p-e-N) Thomas charge transfer process in high velocity p-He collisions
Open this publication in new window or tab >>Experimental separation of the (p-e-N) Thomas charge transfer process in high velocity p-He collisions
Show others...
In: Physical Reiview LettersArticle in journal (Refereed) Submitted
Identifiers
urn:nbn:se:su:diva-24662 (URN)
Note
Part of urn:nbn:se:su:diva-732Available from: 2005-11-09 Created: 2005-11-09Bibliographically approved
2. Transfer ionization in p+He collisions
Open this publication in new window or tab >>Transfer ionization in p+He collisions
Show others...
2005 In: Nuclear Instruments and Methods B, Vol. 233, no 1-4, 43-47 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-24663 (URN)
Note
Part of urn:nbn:se:su:diva-732Available from: 2005-11-09 Created: 2005-11-09Bibliographically approved
3. Recoil-ion momentum distribution for Transfer Ionization in fast proton-He collisions
Open this publication in new window or tab >>Recoil-ion momentum distribution for Transfer Ionization in fast proton-He collisions
Show others...
2005 In: Phys. Rev. A, Vol. 72, no 012713Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-24664 (URN)
Note
Part of urn:nbn:se:su:diva-732Available from: 2005-11-09 Created: 2005-11-09Bibliographically approved
4. Two-center interference in fast proton–H2-electron transfer and excitation processes
Open this publication in new window or tab >>Two-center interference in fast proton–H2-electron transfer and excitation processes
Show others...
2005 In: Phys Rev A, Vol. 72, no 050703(R)Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-24665 (URN)
Note
Part of urn:nbn:se:su:diva-732Available from: 2005-11-09 Created: 2005-11-09Bibliographically approved

Open Access in DiVA

fulltext(1498 kB)589 downloads
File information
File name FULLTEXT01.pdfFile size 1498 kBChecksum SHA-1
e64cefce69333a8e5e91ff4492b5e7ce6fb4f3247d0469f4c5112741fbebfe5d73359f1b
Type fulltextMimetype application/pdf

By organisation
Department of Physics
Atom and Molecular Physics and Optics

Search outside of DiVA

GoogleGoogle Scholar
Total: 589 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 511 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf