Detail publikace

Electronic interaction of very slow light ions in Au: Electronic stopping and electron emission

MARKIN, S. PRIMETZHOFER, D. PRŮŠA, S. BRUNMAYR, M. KOWARIK, G. AUMAYR, F. BAUER, P.

Originální název

Electronic interaction of very slow light ions in Au: Electronic stopping and electron emission

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Electronic stopping and ion-induced electron emission during the interaction of slow (v<0.1 a.u.) H+ and D+ ions with polycrystalline Au targets have been investigated. Electronic stopping is deduced from time-of-flight low-energy ion scattering measurements in backscattering geometry using polycrystalline films of several nanometers thick. Current measurements are performed to determine the ion-induced electron emission yield. Both in electronic stopping and in ion-induced electron emission we find a rather sharp, distinctive threshold velocity of ~0.19 a.u. for specific excitation and emission of 5d electrons. Below this threshold the projectiles interact exclusively with the 6s electrons.

Klíčová slova

electron backscattering; electron emission; electron-surface impact; gold, ion-surface impact

Autoři

MARKIN, S.; PRIMETZHOFER, D.; PRŮŠA, S.; BRUNMAYR, M.; KOWARIK, G.; AUMAYR, F.; BAUER, P.

Rok RIV

2008

Vydáno

25. 11. 2008

ISSN

1098-0121

Periodikum

PHYSICAL REVIEW B

Ročník

78

Číslo

19

Stát

Spojené státy americké

Strany od

195122-1

Strany do

195122-6

Strany počet

6