Direct evidence for projectile charge-state dependent crater formation due to fast ions

We report on craters formed by individual 3 MeV/u Au (q(ini)+) ions of selected incident charge states q_(ini) penetrating thin layers of poly(methyl methacrylate). Holes and raised regions are formed around the region of the impact, with sizes that depend strongly and differently on q_(ini). Variat...

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Bibliographic Details
Published in:Physical review letters 2008-10, Vol.101 (16), p.167601-167601, Article 167601
Main Authors: Papaléo, R M, Silva, M R, Leal, R, Grande, P L, Roth, M, Schattat, B, Schiwietz, G
Format: Article
Language:English
Subjects:
CHARGE STATES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRATERS
GOLD IONS
INCIDENCE ANGLE
ION BEAMS
METHACRYLIC ACID ESTERS
MEV RANGE 01-10
PROJECTILES
THICKNESS
THIN FILMS
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Summary:We report on craters formed by individual 3 MeV/u Au (q(ini)+) ions of selected incident charge states q_(ini) penetrating thin layers of poly(methyl methacrylate). Holes and raised regions are formed around the region of the impact, with sizes that depend strongly and differently on q_(ini). Variation of q_(ini) of the film thickness and of the angle of incidence allows us to extract information about the depth of origin contributing to different crater features.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.101.167601