2009, English, Article edition: Detailed study of the ion emission from a germanium crystal surface under impact of fast heavy ions in channeling conditions L'Hoir, A.; Koumeir, C.; Della Negra, S.; ...

User activity

Share to:
 
Bookmark: http://trove.nla.gov.au/version/206260
Physical Description
  • text
Published
  • HAL - CCSD
  • 2009
Language
  • English

Edition details

Title
  • Detailed study of the ion emission from a germanium crystal surface under impact of fast heavy ions in channeling conditions
Author
  • L'Hoir, A.
  • Koumeir, C.
  • Della Negra, S.
  • Boduch, P.
  • Roussel Chomaz, P.
  • Cassimi, A.
  • Chevallier, M.
  • Cohen, C.
  • Dauvergne, D.
  • Fallavier, M.
  • Jacquet, D.
  • Manil, B.
  • Poizat, J.-C.
  • Ray, C.
  • Rothard, H.
  • Schmaus, D.
  • Toulemonde, M.
Published
  • HAL - CCSD
  • 2009
Physical Description
  • text
Subjects
Notes
  • A thin germanium crystal has been irradiated at GANIL by Pb beams of 29 MeV/​A (charge state Qin =​ 56 and 72) and of 5.6 MeV/​A (Qin =​ 28). The induced ion emission from the sample entrance surface was studied, impact per impact, as a function of Qin, velocity vin and energy loss DE in the crystal. The Pb ions transmitted through the crystal were analyzed in charge (Qout) and energy using the SPEG spectrometer. The emitted ionized species were detected and analyzed in mass by a Time of Flight multianode detector (LAG). Channeling was used to select peculiar DE in Ge and hence peculiar Pb ion trajectories close to the emitting surface. The experiment was performed in standard vacuum. No Ge emission was found. The dominating emitted species are H+ and hydrocarbon ions originating from the contamination layer on top of the crystal. The mean value of the number of detected species per incoming Pb ion (multiplicity) varies as (Qin/​vin)^p, with p values in agreement with previous results. We have clearly observed an influence of the energy deposition DE in Ge on the emission from the top contamination layer. When selecting increasing values of DE, we observed a rather slow increase of . On the contrary, the probabilities of high multiplicity values, that are essentially connected to fragmentation after emission, strongly increase with DE.
  • HAL:hal-00257795, version 1
  • HAL:http:/​/​hal.archives-ouvertes.fr/​hal-00257795/​en/​
  • DOI:10.1016/​j.nimb.2009.02.041
Language
  • English
Contributed by
OAIster

Get this edition

  • Set up My libraries

    How do I set up "My libraries"?

    In order to set up a list of libraries that you have access to, you must first login or sign up. Then set up a personal list of libraries from your profile page by clicking on your user name at the top right of any screen.

  • All (2)
  • Unknown (2)
None of your libraries hold this item.
None of your libraries hold this item.
None of your libraries hold this item.
None of your libraries hold this item.
None of your libraries hold this item.
None of your libraries hold this item.
None of your libraries hold this item.
None of your libraries hold this item.

User activity


e.g. test cricket, Perth (WA), "Parkes, Henry"

Separate different tags with a comma. To include a comma in your tag, surround the tag with double quotes.

Be the first to add a tag for this edition

Be the first to add this to a list

Comments and reviews

What are comments? Add a comment

No user comments or reviews for this version

Add a comment